Voquezna Drug Information

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse Reactions with VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK The safety of VOQUEZNA TRIPLE PAK was evaluated in 675 adult patients (aged 20 to 82 years) in clinical trials in the United States, Europe and Japan and VOQUEZNA DUAL PAK was evaluated in 348 adult patients (aged 20 to 80 years) in a clinical trial in the United States and Europe. All the patients were screened and found to be positive for H. pylori infection.

The safety of VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK was evaluated in a randomized, controlled, double-blind triple therapy/open-label dual therapy study conducted in the United States and Europe in treatment-naïve H. pylori -positive adult patients. Patients were randomized 1:1:1 to vonoprazan 20 mg twice daily plus amoxicillin 1,000 mg twice daily plus clarithromycin 500 mg twice daily (VOQUEZNA TRIPLE PAK) or vonoprazan 20 mg twice daily plus amoxicillin 1,000 mg three times daily (VOQUEZNA DUAL PAK) or lansoprazole 30 mg twice daily plus amoxicillin 1,000 mg twice daily plus clarithromycin 500 mg twice daily (LAC) administered for 14 consecutive days. A total of 346 patients received VOQUEZNA TRIPLE PAK in the study, 348 received VOQUEZNA DUAL PAK and 345 received LAC. These patients had a mean age of 51 years (range 20 to 87 years); 62.2% were female, 89.3% were White, 7.4% Black or African American, 1.5% were Asian and 1.8% were others with 72.5% non-Hispanic or Latino.

Adverse Reactions Leading to Discontinuation Treatment discontinuation due to an adverse reaction occurred in 2.3% (8/346) of the VOQUEZNA TRIPLE PAK-treated patients, 0.9% (3/348) of the VOQUEZNA DUAL PAK-treated patients and 1.2% (4/345) of the LAC-treated patients. The most common adverse reactions leading to discontinuation of VOQUEZNA TRIPLE PAK were diarrhea (0.6%) and hypertension (0.6%) and the most common adverse reaction leading to discontinuation of VOQUEZNA DUAL PAK was rash (0.6%). Most Common Adverse Reactions The adverse reactions occurring in ≥2% of patients are described in Table 3. Table 3: Adverse Reactions Occurring in ≥2% of Adult Patients Receiving VOQUEZNA DUAL PAK or VOQUEZNA TRIPLE PAK Adverse Reactions VOQUEZNA DUAL PAK VOQUEZNA TRIPLE PAK LAC (N=348) n (%) (N=346) n (%) (N=345) n (%) Diarrhea 18 14 33 Dysgeusia Dysgeusia also includes taste disorder. 2 16 21 Vulvovaginal candidiasis Vulvovaginal candidiasis includes: urogenital infection fungal, vulvovaginal candidiasis, vulvovaginal mycotic infection, vulvovaginal pruritus, pruritus genital, genital infection fungal. 7 11 5 Abdominal pain Abdominal pain includes: abdominal discomfort, abdominal pain, abdominal pain lower, abdominal pain upper. 9 8 10 Headache 5 9 5 Hypertension Hypertension also includes blood pressure increased. 4 7 3 Nasopharyngitis 7 1 3 This study was not designed to evaluate meaningful comparisons of the incidence of adverse reactions in the VOQUEZNA DUAL PAK, VOQUEZNA TRIPLE PAK, and LAC treatment groups. Other Adverse Reactions Other adverse reactions occurring in <2% of patients with VOQUEZNA TRIPLE PAK or VOQUEZNA DUAL PAK are listed below by body system: Blood and lymphatic system disorders: anemia, leukocytosis, leukopenia, neutropenia.

Cardiac disorders: QT prolongation, tachycardia. Eye disorders: orbital edema. Gastrointestinal disorders: abdominal distension, constipation, dry mouth, duodenal polyp, duodenal ulcer, dyspepsia, flatulence, gastric ulcer, gastroesophageal reflux disease, hematochezia, large intestine polyp, nausea, rectal polyp, stomatitis, tongue discomfort, vomiting.

General disorders and administration site conditions: fatigue, pyrexia. Immune system disorders: drug hypersensitivity. Infections and infestations: anal fungal infection, gastrointestinal viral infection, oral fungal infection, pneumonia, tongue fungal infection, upper respiratory tract infection, urinary tract infection, viral infection.

Investigations: increased liver function test. Metabolism and nutrition disorders: decreased appetite. Musculoskeletal system: bone fracture.

Nervous system disorders: ageusia, dizziness, tension headache. Psychiatric disorders: anxiety, depression, insomnia. Renal and urinary disorders: renal hypertrophy, tubulointerstitial nephritis.

Reproductive system and breast disorders: vaginal discharge. Respiratory, thoracic and mediastinal disorders: cough, nasal polyps, oropharyngeal pain. Skin and subcutaneous tissue disorders: dermatitis, dry skin, rash.

Postmarketing Experience with Components of

VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK The following adverse reactions have been identified during post-approval use of vonoprazan (outside of the United States), amoxicillin, or clarithromycin (all used separately). Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Vonoprazan Blood and lymphatic system disorders: thrombocytopenia. Immune system disorders: anaphylactic shock, urticaria.

Infections and Infestations: C. difficile (with concomitant antibacterials). Investigation: hypomagnesemia, hypokalemia, hypocalcemia, vitamin B12 deficiency. Hepatobiliary disorders: hepatic injury, hepatic failure, jaundice. Skin and subcutaneous tissue disorders: drug eruption, erythema multiforme, SJS, TEN. Amoxicillin Infections and infestations: mucocutaneous candidiasis.

Gastrointestinal: Drug-induced enterocolitis syndrome (DIES), black hairy tongue, and hemorrhagic/pseudomembranous colitis. Onset of pseudomembranous colitis symptoms may occur during or after antibacterial treatment. Hypersensitivity reactions: anaphylaxis.

Serum sickness–like reactions, erythematous maculopapular rashes, erythema multiforme, exfoliative dermatitis, hypersensitivity vasculitis, and urticaria have been reported. Renal: crystalluria has been reported. Hemic and lymphatic systems: hemolytic anemia, thrombocytopenia, thrombocytopenic purpura, eosinophilia, and agranulocytosis have been reported during therapy with penicillins.

These reactions are usually reversible on discontinuation of therapy and are believed to be hypersensitivity phenomena. Central nervous system: reversible hyperactivity, agitation, confusion, convulsions, aseptic meningitis, and behavioral changes have been rarely reported. Miscellaneous: tooth discoloration (brown, yellow, or gray staining) has been reported.

Most reports occurred in pediatric patients. Discoloration was reduced or eliminated with brushing or dental cleaning in most cases. Skin and subcutaneous tissue disorders: TEN, SJS, DRESS, AGEP, and linear IgA bullous dermatosis.

Clarithromycin Blood and lymphatic system: thrombocytopenia, agranulocytosis. Cardiac: ventricular arrhythmia, torsades de pointes. Ear and labyrinth: deafness was reported chiefly in elderly women and was usually reversible.

Gastrointestinal: pancreatitis acute, tongue discoloration, tooth discoloration was reported and was usually reversible with professional cleaning upon discontinuation of the drug. Hepatobiliary: hepatic failure, jaundice hepatocellular. Adverse reactions related to hepatic dysfunction have been reported with clarithromycin.

Infections and infestations: pseudomembranous colitis. Immune system: anaphylactic reactions, angioedema. Investigations: prothrombin time prolonged, white blood cell count decreased, INR increased.

Abnormal urine color has been reported, associated with hepatic failure. Metabolism and nutrition: hypoglycemia has been reported in patients taking oral hypoglycemic agents or insulin. Musculoskeletal and connective tissue: myopathy rhabdomyolysis was reported and in some of the reports, clarithromycin was administered concomitantly with statins, fibrates, colchicine or allopurinol.

Nervous system: parosmia, anosmia, paresthesia and convulsions. Psychiatric: abnormal behavior, confusional state, depersonalization, disorientation, hallucination, manic behavior, abnormal dream, psychotic disorder. These disorders usually resolve upon discontinuation of the drug.

Renal and urinary: renal failure. Skin and subcutaneous tissue disorders: TEN, SJS, DRESS, AGEP, Henoch-Schonlein purpura, acne. Vascular: hemorrhage.

Collated drug interaction information for the individual components in VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK is summarized below. Drug interaction studies with VOQUEZNA TRIPLE PAK or VOQUEZNA DUAL PAK have not been conducted. These recommendations are based on either drug interaction trials or predicted interactions due to the expected magnitude of interaction and potential for serious adverse reactions or loss of efficacy . Clarithromycin (a component of VOQUEZNA TRIPLE PAK) is a strong CYP3A inhibitor.

Concomitant use of VOQUEZNA TRIPLE PAK with a drug(s) primarily metabolized by CYP3A may cause elevations in CYP3A substrate drug's concentrations that could increase or prolong both therapeutic and adverse effects of the concomitant drug. Table 4: Effects of Other Drugs on VOQUEZNA TRIPLE PAK Strong or Moderate CYP3A Inducers Clinical Effect Vonoprazan and clarithromycin are CYP3A substrates. Strong or moderate CYP3A inducers may decrease exposure of vonoprazan and clarithromycin , which may reduce the effectiveness of VOQUEZNA TRIPLE PAK. Prevention or Management Avoid concomitant use with VOQUEZNA TRIPLE PAK. Probenecid Clinical Effect Amoxicillin undergoes tubular secretion.

Probenecid may increase amoxicillin exposure by blocking its renal tubular secretion, which may increase the risk of VOQUEZNA TRIPLE PAK adverse reactions. Prevention or Management Closely monitor for signs or symptoms of increased or prolonged adverse reactions associated with amoxicillin when used with VOQUEZNA TRIPLE PAK. Allopurinol Clinical Effect Increase in the incidence of rashes is reported in patients receiving both allopurinol and amoxicillin together compared to patients receiving amoxicillin alone. It is not known whether this potentiation of amoxicillin rashes is due to allopurinol or the hyperuricemia present in these patients.

Prevention or Management Discontinue allopurinol at the first appearance of skin rash when used concomitantly with VOQUEZNA TRIPLE PAK. Omeprazole Clinical Effect Clarithromycin concentrations in the gastric tissue and mucus were increased by concomitant administration of omeprazole . Prevention or Management Avoid concomitant use of VOQUEZNA TRIPLE PAK with omeprazole. Itraconazole Clinical Effect Both clarithromycin and itraconazole are substrates and inhibitors of CYP3A, potentially leading to a bi-directional drug interaction when administered concomitantly. VOQUEZNA TRIPLE PAK's use with strong CYP3A4 inhibitors may lead to increases in clarithromycin exposure, which may increase the risk of VOQUEZNA TRIPLE PAK adverse reactions.

Prevention or Management Patients taking itraconazole with VOQUEZNA TRIPLE PAK should be monitored closely for signs or symptoms of increased or prolonged adverse reactions associated with itraconazole and clarithromycin. Antivirals Clinical Effect Clarithromycin is a CYP3A4 substrate and inhibitor. Use of VOQUEZNA TRIPLE PAK with antivirals that are CYP3A substrates, inducers, or CYP3A inhibitors may potentially lead to bi-directional drug interactions leading to alterations in exposure of clarithromycin and/or CYP3A substrates, which may increase the risk of adverse reactions or loss of effectiveness . Prevention or Management Saquinavir (CYP3A substrate and inhibitor) Use VOQUEZNA TRIPLE PAK with caution.

See saquinavir prescribing information for instructions when saquinavir (with or without ritonavir) is co-administered with clarithromycin. Ritonavir (CYP3A inhibitor) Use of VOQUEZNA TRIPLE PAK with ritonavir is not recommended in patients with decreased renal function. Etravirine (CYP3A inducer) Avoid concomitant use with VOQUEZNA TRIPLE PAK. Table 5: Effects of Other Drugs on VOQUEZNA DUAL PAK Strong or Moderate CYP3A Inducers Clinical Effect Vonoprazan is a CYP3A substrate.

Strong or moderate CYP3A inducers may decrease vonoprazan exposure , which may reduce the effectiveness of VOQUEZNA DUAL PAK. Prevention or Management Avoid concomitant use with VOQUEZNA DUAL PAK. Probenecid Clinical Effect Amoxicillin undergoes tubular secretion. Probenecid may increase amoxicillin exposure by blocking its renal tubular secretion, which may increase the risk of VOQUEZNA DUAL PAK adverse reactions. Prevention or Management Closely monitor for signs or symptoms of increased or prolonged adverse reactions associated with amoxicillin when used with VOQUEZNA DUAL PAK. Allopurinol Clinical Effect Increase in the incidence of rashes is reported in patients receiving both allopurinol and amoxicillin together compared to patients receiving amoxicillin alone.

It is not known whether this potentiation of amoxicillin rashes is due to allopurinol or the hyperuricemia present in these patients. Prevention or Management Discontinue allopurinol at the first appearance of skin rash when used concomitantly with VOQUEZNA DUAL PAK. Table 6: Effects of VOQUEZNA TRIPLE PAK on Other Drugs Drugs Dependent on Gastric pH for Absorption Antiretrovirals Clinical Effect Vonoprazan reduces intragastric acidity , which may alter the absorption of antiretroviral drugs leading to changes in their safety and/or effectiveness. Prevention or Management Rilpivirine-containing Products Concomitant use with VOQUEZNA TRIPLE PAK is contraindicated.

Atazanavir Avoid concomitant use with VOQUEZNA TRIPLE PAK. Nelfinavir Other Antiretroviral Drugs See the prescribing information of other antiretroviral drugs dependent on gastric pH for absorption prior to concomitant use with VOQUEZNA TRIPLE PAK. Other Drugs (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Effect Vonoprazan reduces intragastric acidity , which may decrease the absorption of drugs reducing their effectiveness. Prevention or Management See the prescribing information for other drugs dependent on gastric pH for absorption. Certain CYP3A Substrates where minimal concentration changes may lead to serious toxicities Clinical Effect Clarithromycin is a strong CYP3A inhibitor.

Vonoprazan is a weak CYP3A inhibitor . Clarithromycin and vonoprazan may increase exposure of CYP3A4 substrates, which may increase the risk of adverse reactions related to these substrates. There have been spontaneous or published reports of CYP3A based interactions of clarithromycin with tacrolimus and cyclosporine. Prevention or Management Immunosuppressants: Tacrolimus, cyclosporine Frequent monitoring for concentrations and/or adverse reactions related to the substrate drugs when used with VOQUEZNA TRIPLE PAK. Dosage reduction of substrate drugs may be needed.

See prescribing information for the relevant substrate drugs. CYP2C19 Substrates (e.g., clopidogrel, citalopram, cilostazol) Clinical Effect Vonoprazan is a CYP2C19 inhibitor . Vonoprazan may reduce plasma concentrations of the active metabolite of clopidogrel and may cause reduction in platelet inhibition. Vonoprazan may increase exposure of CYP2C19 substrate drugs (e.g., citalopram, cilostazol). Prevention or Management Clopidogrel Carefully monitor the efficacy of clopidogrel and consider alternative anti-platelet therapy.

Citalopram and Cilostazol Carefully monitor patients for adverse reactions associated with citalopram and cilostazol. See the prescribing information for dosage adjustments. Oral Anticoagulants Clinical Effect Abnormal prolongation of prothrombin time (increased INR) has been reported in patients receiving amoxicillin and oral anticoagulants.

Prevention or Management Appropriate monitoring should be undertaken when anticoagulants are prescribed concurrently. Adjustments in the dose of oral anticoagulants may be necessary to maintain the desired level of anticoagulation. Chromogranin A (CgA) Test for Neuroendocrine Tumors Clinical Effect Vonoprazan reduces intragastric acidity, which increases chromogranin A (CgA) levels and may cause false positive results in diagnostic investigations for neuroendocrine tumors.

Prevention or Management Assess CgA levels at least 4 weeks after VOQUEZNA TRIPLE PAK treatment and repeat the test if initial CgA levels are high. If serial tests are performed (e.g., for monitoring), use the same commercial laboratory for testing, as reference ranges between tests may vary. Interaction with Secretin Stimulation Test Clinical Effect Hyper-response in gastrin secretion in response to secretin stimulation test, falsely suggesting gastrinoma.

Prevention or Management Test should be performed at least 4 weeks after stopping VOQUEZNA TRIPLE PAK to allow gastrin levels to return to normal . Glucose Tests Clinical Effect Amoxicillin is primarily excreted in the urine . High urine concentrations of ampicillin or amoxicillin may cause false-positive results when using glucose tests based on the Benedict's copper reduction reaction that determines the amount of reducing substances like glucose in the urine. Prevention or Management Use a test based on enzymatic glucose oxidase reactions when testing for glucose in the urine of patients treated with VOQUEZNA TRIPLE PAK. Itraconazole Clinical Effect Both clarithromycin and itraconazole are substrates and inhibitors of CYP3A, potentially leading to a bi-directional drug interaction when administered concomitantly. VOQUEZNA TRIPLE PAK's use with strong CYP3A4 inhibitors may lead to increases in clarithromycin exposure, which may increase the risk of VOQUEZNA TRIPLE PAK adverse reactions.

Prevention or Management Patients taking itraconazole with VOQUEZNA TRIPLE PAK should be monitored closely for signs or symptoms of increased or prolonged adverse reactions associated with itraconazole and clarithromycin. Antiarrhythmics Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of antiarrhythmic drugs that are CYP3A substrates, which may increase the risk of adverse reactions related to these substrates including cardiac arrhythmias (e.g., torsades de pointes ). There have been spontaneous or published reports of CYP3A based interactions of clarithromycin with disopyramide and quinidine.

There have been postmarketing reports of hypoglycemia with the concomitant administration of clarithromycin and disopyramide. Prevention or Management Disopyramide Avoid concomitant use with VOQUEZNA TRIPLE PAK. If concomitant use is unavoidable, monitor patients for QTc prolongation and changes in blood glucose levels. Amiodarone Avoid concomitant use with VOQUEZNA TRIPLE PAK. If concomitant use is unavoidable, monitor patients for QTc prolongation.

Dofetilide Procainamide Sotalol Quinidine Colchicine Clinical Effect Clarithromycin is an inhibitor of CYP3A and the efflux transporter, P-glycoprotein (P-gp). Colchicine is a substrate of CYP3A and P-gp. Clarithromycin increases exposure of colchicine , which may increase the risk of adverse reactions related to colchicine. Prevention or Management Concomitant use of colchicine with VOQUEZNA TRIPLE PAK is contraindicated in patients with renal or hepatic impairment.

If co-administration of VOQUEZNA TRIPLE PAK and colchicine is necessary in patients with normal renal or hepatic function, carefully monitor patients for clinical symptoms of colchicine toxicity and refer to the colchicine prescribing information for recommendations on dosage reduction. Antipsychotics Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of antipsychotic drugs that are CYP3A substrates, which may increase the risk of adverse reactions related to these substrates including the risk of somnolence, orthostatic hypotension, altered state of consciousness, neuroleptic malignant syndrome, or cardiac arrhythmias (QT prolongation, ventricular tachycardia, ventricular fibrillation, and torsades de pointes ). Prevention or Management Pimozide Concomitant use with VOQUEZNA TRIPLE PAK is contraindicated.

Lurasidone Concomitant use with VOQUEZNA TRIPLE PAK is contraindicated. Quetiapine Refer to quetiapine prescribing information for recommendations on dosage reduction if co-administered with CYP3A4 inhibitors such as clarithromycin. Tolterodine (patients deficient in CYP2D6 activity) Clinical Effect Clarithromycin is a strong CYP3A inhibitor.

The primary route of metabolism for tolterodine is via CYP2D6. Clarithromycin may increase tolterodine exposure and the risk of adverse reactions related to tolterodine in patients deficient in CYP2D6 activity because tolterodine is metabolized via CYP3A in this subset of population. Prevention or Management Tolterodine 1 mg twice daily is recommended in patients deficient in CYP2D6 activity (poor metabolizers) when co-administered with strong CYP3A4 inhibitors such as clarithromycin. Antivirals Clinical Effect Clarithromycin is a CYP3A4 substrate and inhibitor.

Use of VOQUEZNA TRIPLE PAK with antivirals that are CYP3A substrates, inducers, or CYP3A inhibitors may potentially lead to bi-directional drug interactions leading to alterations in exposure of clarithromycin and/or CYP3A substrates, which may increase the risk of adverse reactions or loss of effectiveness . Prevention or Management Saquinavir (CYP3A substrate and inhibitor) Use VOQUEZNA TRIPLE PAK with caution. See saquinavir prescribing information for instructions when saquinavir (with or without ritonavir) is co-administered with clarithromycin. Maraviroc (CYP3A substrate) Use VOQUEZNA TRIPLE PAK with caution.

See the prescribing information of maraviroc for dosage recommendation when given with strong CYP3A inhibitors such as clarithromycin. Zidovudine Administration of VOQUEZNA TRIPLE PAK and zidovudine should be separated by at least two hours. Benzodiazepines Clinical Effect Clarithromycin is a strong CYP3A inhibitor.

Clarithromycin may increase exposure of benzodiazepines that are CYP3A substrates, which may increase the risk of adverse reactions related to these substrates. Prevention or Management Midazolam Closely monitor patients for signs or symptoms of increased or prolonged central nervous system effects (e.g., somnolence and confusion) and refer to the CYP3A substrate prescribing information for dosage adjustments when used concomitantly with VOQUEZNA TRIPLE PAK. Alprazolam Triazolam Calcium Channel Blockers Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of calcium channel blockers that are CYP3A substrates, which may increase the risk of adverse reactions related to these substrates including hypotension, acute kidney injury, bradyarrhythmias, lactic acidosis, or peripheral edema.

Prevention or Management Verapamil Use VOQUEZNA TRIPLE PAK with caution. Amlodipine Diltiazem Nifedipine Ergot Alkaloids Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of ergot alkaloids that are CYP3A substrates, which may increase the risk of vasospasm and ischemia of the extremities and other tissues including the central nervous system . Prevention or Management Ergotamine Concomitant use with VOQUEZNA TRIPLE PAK is contraindicated.

Dihydroergotamine Hypoglycemic Agents Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of hypoglycemic agents that are CYP3A substrates, which may increase the risk of hypoglycemia . Prevention or Management Nateglinide Closely monitor glucose levels when used concomitantly with VOQUEZNA TRIPLE PAK. Pioglitazone Repaglinide Rosiglitazone Insulin Lipid-lowering Agents Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of lipid-lowering drugs that are CYP3A substrates, thereby increasing the risk of toxicities from these drugs . Prevention or Management Lomitapide Concomitant use with VOQUEZNA TRIPLE PAK is contraindicated.

Lovastatin Simvastatin Atorvastatin Use VOQUEZNA TRIPLE PAK with caution. In situations where the concomitant use of VOQUEZNA TRIPLE PAK with atorvastatin or pravastatin cannot be avoided, atorvastatin dose should not exceed 20 mg daily and pravastatin dose should not exceed 40 mg daily. Pravastatin Fluvastatin Use of a statin that is not dependent on CYP3A metabolism (e.g., fluvastatin) can be considered.

It is recommended to prescribe the lowest registered dose if concomitant use cannot be avoided. Phosphodiesterase Inhibitors Clinical Effect Clarithromycin is a strong CYP3A inhibitor. Clarithromycin may increase exposure of phosphodiesterase inhibitors that are CYP3A substrates, which may increase the risk of adverse reactions related to these substrates.

Prevention or Management Sildenafil Avoid concomitant use with VOQUEZNA TRIPLE PAK. If concomitant use is unavoidable, see the prescribing information of the respective phosphodiesterase inhibitors for dosage recommendation when given with strong CYP3A inhibitors such as clarithromycin. Tadalafil Vardenafil Other CYP3A Based Interactions Clinical Effect Clarithromycin is a substrate and strong inhibitor of CYP3A4. Clarithromycin increases exposure of CYP3A substrates , which may increase the risk of adverse reactions related to these substrates . Strong or moderate CYP3A inducers may decrease exposure of clarithromycin. There have been spontaneous or published reports of CYP3A based interactions of clarithromycin with alfentanil, methylprednisolone, cilostazol, bromocriptine, vinblastine, phenobarbital, and St.

John's Wort. Prevention or Management Use VOQUEZNA TRIPLE PAK with caution. P-glycoprotein (P-gp) Substrates: Digoxin Clinical Effect Clarithromycin is a P-gp inhibitor.

Clarithromycin may increase exposure of P-gp substrates, which may increase the risk of adverse reactions related to these substrates, including potentially fatal arrhythmias. Elevated digoxin serum concentrations in patients receiving clarithromycin and digoxin concomitantly have been reported in postmarketing surveillance. Some patients have shown clinical signs consistent with digoxin toxicity, including potentially fatal arrhythmias.

Prevention or Management Digoxin Carefully monitor serum concentrations and refer to the digoxin prescribing information for dosage adjustments when used concomitantly with VOQUEZNA TRIPLE PAK. Drugs Metabolized by CYP450 Isoforms Other than CYP3A Clinical Effect Clarithromycin may increase exposure of drugs that are metabolized by CYP450 isoforms other than CYP3A by inhibiting their metabolism. There have been post-marketing reports of interactions of clarithromycin with drugs not thought to be metabolized by CYP3A. Prevention or Management Hexobarbital Use VOQUEZNA TRIPLE PAK with caution. Phenytoin Valproate Theophylline Clinical Effect Clarithromycin may increase exposure of theophylline (a xanthine derivative drug) , which may increase the risk of adverse reactions related to theophylline.

Prevention or Management Closely monitor serum theophylline concentrations in patients receiving high dosages of theophylline or with baseline concentrations in the upper therapeutic range when used concomitantly with VOQUEZNA TRIPLE PAK. Table 7: Effects of VOQUEZNA DUAL PAK on Other Drugs Drugs Dependent on Gastric pH for Absorption Antiretrovirals Clinical Effect Vonoprazan reduces intragastric acidity , which may alter the absorption of antiretroviral drugs leading to changes in their safety and/or effectiveness. Prevention or Management Rilpivirine-containing Products Concomitant use with VOQUEZNA DUAL PAK is contraindicated. Atazanavir Avoid concomitant use with VOQUEZNA DUAL PAK. Nelfinavir Other Antiretroviral Drugs See the prescribing information of other antiretroviral drugs dependent on gastric pH for absorption prior to concomitant use with VOQUEZNA DUAL PAK. Other Drugs (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Effect Vonoprazan reduces intragastric acidity , which may decrease the absorption of drugs reducing their effectiveness.

Prevention or Management See the prescribing information for other drugs dependent on gastric pH for absorption. Certain CYP3A Substrates where minimal concentration changes may lead to serious toxicities Clinical Effect Vonoprazan is a weak CYP3A inhibitor . Vonoprazan may increase exposure of CYP3A4 substrates, which may increase the risk of adverse reactions related to these substrates. Prevention or Management Immunosuppressants: Tacrolimus, cyclosporine Frequent monitoring for concentrations and/or adverse reactions related to the substrate drugs when used with VOQUEZNA DUAL PAK. Dosage reduction of substrate drugs may be needed.

See prescribing information for the relevant substrate drugs. Oral Anticoagulants Clinical Effect Abnormal prolongation of prothrombin time (increased INR) has been reported in patients receiving amoxicillin and oral anticoagulants. Prevention or Management Appropriate monitoring should be undertaken when anticoagulants are prescribed concurrently.

Adjustments in the dose of oral anticoagulants may be necessary to maintain the desired level of anticoagulation. CYP2C19 Substrates (e.g., clopidogrel, citalopram, cilostazol) Clinical Effect Vonoprazan is a CYP2C19 inhibitor . Vonoprazan may reduce plasma concentrations of the active metabolite of clopidogrel and may cause reduction in platelet inhibition. Vonoprazan may increase exposure of CYP2C19 substrate drugs (e.g., citalopram, cilostazol). Prevention or Management Clopidogrel Carefully monitor the efficacy of clopidogrel and consider alternative anti-platelet therapy.

Citalopram and Cilostazol Carefully monitor patients for adverse reactions associated with citalopram and cilostazol. See the prescribing information for dosage adjustments. CgA Test for Neuroendocrine Tumors Clinical Effect Vonoprazan reduces intragastric acidity, which increases CgA levels and may cause false positive results in diagnostic investigations for neuroendocrine tumors.

Prevention or Management Assess CgA levels at least 4 weeks after VOQUEZNA DUAL PAK treatment and repeat the test if initial CgA levels are high. If serial tests are performed (e.g., for monitoring), use the same commercial laboratory for testing, as reference ranges between tests may vary. Interaction with Secretin Stimulation Test Clinical Effect Hyper-response in gastrin secretion in response to secretin stimulation test, falsely suggesting gastrinoma.

Prevention or Management Test should be performed at least 4 weeks after stopping VOQUEZNA DUAL PAK to allow gastrin levels to return to normal . Glucose Tests Clinical Effect Amoxicillin is primarily excreted in the urine . High urine concentrations of ampicillin or amoxicillin may cause false-positive results when using glucose tests based on the Benedict's copper reduction reaction that determines the amount of reducing substances like glucose in the urine. Prevention or Management Use a test based on enzymatic glucose oxidase reactions when testing for glucose in the urine of patients treated with VOQUEZNA DUAL PAK. Components of VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK have the potential for clinically important drug interactions. See Full Prescribing Information for important drug interactions with VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK.

Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to VOQUEZNA TRIPLE PAK or VOQUEZNA DUAL PAK during pregnancy. Healthcare providers are encouraged to register patients by calling 1-866-609-1612 or visiting https://voqueznapregnancyregistry.com/. Risk Summary VOQUEZNA TRIPLE PAK Based on findings from animal studies and observational studies in pregnant women with use of clarithromycin, use of VOQUEZNA TRIPLE PAK is not recommended in pregnant women except in clinical circumstances where no alternative therapy is appropriate. There are no adequate and well-controlled studies of VOQUEZNA TRIPLE PAK in pregnant women to evaluate for drug-associated risks of major birth defects, miscarriage, or other adverse maternal or fetal outcomes.

If VOQUEZNA TRIPLE PAK is used during pregnancy, advise pregnant women of the potential risk to a fetus. No reproductive and developmental toxicity studies with the combination of vonoprazan, amoxicillin, and/or clarithromycin were conducted. VOQUEZNA DUAL PAK There are no adequate and well-controlled studies of VOQUEZNA DUAL PAK in pregnant women to evaluate for drug-associated risks of major birth defects, miscarriage, or other adverse maternal or fetal outcomes.

Individual Components of VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK Clarithromycin: Published observational studies in pregnant women have demonstrated adverse effects on pregnancy outcomes, including an increased risk of miscarriage and in some studies an increased incidence of fetal malformations (see Data ). In animal reproduction studies, administration of oral clarithromycin to pregnant mice, rats, rabbits, and monkeys during the period of organogenesis produced malformations in rats (cardiovascular anomalies) and mice (cleft palate) at clinically relevant doses. Fetal effects in mice, rats, and monkeys (e.g., reduced fetal survival, body weight, body weight gain) and implantation losses in rabbits were generally considered to be secondary to maternal toxicity (see Data ). Vonoprazan: Available data from pharmacovigilance reports with vonoprazan use in pregnant women are not sufficient to evaluate for a drug-associated risk for major birth defects, miscarriage or other adverse maternal or fetal outcomes. In pregnant rats, no adverse effects were noted after oral administration of vonoprazan during organogenesis at approximately 27 times the maximum recommended human dose (MRHD) based on AUC exposure comparisons.

In a pre- and postnatal development (PPND) study, pups from dams orally administered vonoprazan during organogenesis and through lactation, exhibited liver discoloration, which in follow-up mechanistic animal studies was associated with necrosis, fibrosis, and hemorrhage at a dose approximately 22 times the MRHD based on AUC comparisons which were likely attributable to exposure during lactation . These effects were not observed at the next lower dose in this study, which was approximately equal to the MRHD based on AUC comparison, however they were seen at clinically relevant exposures in dose range finding studies in rats (see Data ). Amoxicillin: Available data from published epidemiologic studies and pharmacovigilance case reports over several decades with amoxicillin use have not established drug-associated risks of major birth defects, miscarriage, or adverse maternal or fetal outcomes. Reproduction studies with amoxicillin have been performed in mice and rats (5 and 10 times the human dose 2 g human dose for mice and rats, respectively, 3 and 6 times the 3 g human dose for mice and rats, respectively). There was no evidence of harm to the fetus due to amoxicillin. The estimated background risks of major birth defects and miscarriage for the indicated population are unknown.

All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the United States general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data Clarithromycin: Available data from prospective and retrospective observational studies with clarithromycin use in pregnant women demonstrate an increased risk of miscarriage.

Data from these same studies regarding major congenital malformations are inconsistent, with some studies reporting an increased risk (atrioventricular septal defects, genital malformations, orofacial clefts) and others finding no difference between those exposed to clarithromycin and those exposed to nonteratogenic controls. Available studies have methodologic limitations, including small sample size, under-capture of non-live births, exposure misclassification and inconsistent comparator groups. Animal Data Clarithromycin: Animal reproduction studies were conducted in mice, rats, rabbits, and monkeys with oral and intravenously administered clarithromycin.

In pregnant mice, clarithromycin was administered during organogenesis (gestation day 6 to 15) at oral doses of 15, 60, 250, 500, or 1000 mg/kg/day. Reduced body weight observed in dams at 1000 mg/kg/day (3 times the MRHD based on BSA comparison) resulted in reduced survival and body weight of the fetuses. At ≥ 500 mg/kg/day, increases in the incidence of post-implantation loss and cleft palate in the fetuses were observed.

No adverse developmental effects were observed in mice at ≤ 250 mg/kg/day (≤ 1 times MRHD based on BSA comparison). In pregnant Sprague Dawley rats, clarithromycin was administered during organogenesis (GD 6 to 15) at oral doses of 15, 50, or 150 mg/kg/day. Reductions in body weight and food consumption was observed in dams at 150 mg/kg/day. Increased resorptions and reduced body weight of the fetuses at this dose were considered secondary to maternal toxicity.

Additionally, at 150 mg/kg/day (1 times MRHD based on BSA comparison), a low incidence of cardiovascular anomalies (complete situs inversus, undivided truncus, IV septal defect) was observed in the fetuses. Clarithromycin did not cause adverse developmental effects in rats at 50 mg/kg/day (0.3 times MRHD based on BSA comparison). Intravenous dosing of clarithromycin during organogenesis in rats (GD 6 to 15) at 15, 50, or 160 mg/kg/day was associated with maternal toxicity (reduced body weight, body-weight gain, and food consumption) at 160 mg/kg/day but no evidence of adverse developmental effects at any dose (≤ 1 times MRHD based on BSA comparison). In pregnant Wistar rats, clarithromycin was administered during organogenesis (GD 7 to 17) at oral doses of 10, 40, or 160 mg/kg/day. Reduced body weight and food consumption were observed in dams at 160 mg/kg/day but there was no evidence of adverse developmental effects at any dose (≤ 1 times MRHD based on surface BSA comparison). In pregnant rabbits, clarithromycin administered during organogenesis (GD 6 to 18) at oral doses of 10, 35, or 125 mg/kg/day resulted in reduced maternal food consumption and decreased body weight at the highest dose, with no evidence of any adverse developmental effects at any dose (≤ 2 times MRHD based on BSA comparison). Intravenously administered clarithromycin to pregnant rabbits during organogenesis (GD 6 to 18) in rabbits at 20, 40, 80, or 160 mg/kg/day (≥ 0.3 times MRHD based on BSA comparison) resulted in maternal toxicity and implantation losses at all doses.

In pregnant monkeys, clarithromycin was administered (GD 20 to 50) at oral doses of 35 or 70 mg/kg/day. Dose-dependent emesis, poor appetite, fecal changes, and reduced body weight were observed in dams at all doses (≥ 0.5 times MRHD based on BSA comparison). Growth retardation in 1 fetus at 70 mg/kg/day was considered secondary to maternal toxicity. There was no evidence of primary drug related adverse developmental effects at any dose tested.

In a reproductive toxicology study in rats administered oral clarithromycin late in gestation through lactation (GD 17 to post-natal day 21) at doses of 10, 40, or 160 mg/kg/day (≤ 1 times MRHD based on BSA comparison), reductions in maternal body weight and food consumption were observed at 160 mg/kg/day. Reduced body-weight gain observed in offspring at 160 mg/kg/day was considered secondary to maternal toxicity. No adverse developmental effects were observed with clarithromycin at any dose tested.

Vonoprazan: Pregnant rats were orally administered vonoprazan at doses of 30, 100, or 300 mg/kg/day (7, 27, 130 times the MRHD based on AUC comparison at the same doses from unmated female rats from separate studies) during the period of organogenesis from gestation Day 6 to 17. During maternal dosing, one high-dose female died and decreased body weight and food consumption occurred at the middle and highest doses. No embryo-fetal lethality was observed but decreased fetal body weight was observed in the highest dose group. Fetal abnormalities were limited to the 300 mg/kg/day dose group and included ventricular septal defect and mal-positioned subclavian artery in fetuses in a majority (15/19) of litters, as well as tail abnormalities, and small anal opening.

No adverse embryo-fetal effects were observed at the 100 mg/kg/day. Pregnant rabbits were orally administered vonoprazan at doses of 3, 10, or 30 mg/kg/day (0.04, 1.5, 10 times the MRHD based on AUC comparison) during the period of organogenesis from gestation Day 6 to 18. Two animals aborted at the highest dose and decreased body weight and food consumption occurred at the mid and high doses. No embryo-fetal mortality or toxicity occurred.

There were no external, visceral or skeletal abnormalities. In a PPND study, pregnant female rats were orally administered vonoprazan at doses of 1, 3, 10, or 100 mg/kg/day (0.01, 0.18, 1.1, 22 times the MRHD based on AUC comparison) from GD 6 to lactation day (LD) 21. Decreased body weight gain and food consumption were present in dams at the highest dose during lactation. Decreased body weight gain compared to controls was observed in offspring from dams in the high dose group.

Liver discoloration occurred in offspring from the high dose group at LD 4 but was not present in animals examined after weaning. Similarly, in dose range finding studies in rats and follow-up mechanistic animal studies, the liver discoloration was observed and characterized as necrosis, fibrosis and hemorrhage at equal to or greater than clinically relevant exposures based on AUC comparisons. The mechanistic studies further demonstrated the effect was likely attributable to vonoprazan exposure during lactation . The clinical relevance of the liver findings is uncertain.

Exposure margins from vonoprazan between the animal and clinical studies for vonoprazan, amoxicillin, and clarithromycin used in combination may be lower due to increased vonoprazan exposure from concomitant use with clarithromycin in patients. Amoxicillin: Available data from published epidemiologic studies and pharmacovigilance case reports over several decades with amoxicillin use have not established drug-associated risks of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. Animal reproduction studies with amoxicillin have been performed in mice and rats, at doses up to 2,000 mg/kg (5 and 10 times the 2 g human dose for mice and rats, respectively, 3 and 6 times the 3 g human dose for mice and rats, respectively, based on BSA comparison). There was no evidence of harm to the fetus due to amoxicillin.

The estimated background risks of major birth defects and miscarriage for the indicated population are unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the United States general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

Pediatric Use Safety and effectiveness of VOQUEZNA TRIPLE PAK or VOQUEZNA DUAL PAK in pediatric patients have not been established.

Contraindications to

VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK Hypersensitivity Reactions VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK are contraindicated in patients with a known hypersensitivity to any component of VOQUEZNA TRIPLE PAK: vonoprazan, amoxicillin (or other β-lactam antibacterials, e.g., penicillins and cephalosporins), or clarithromycin (or other macrolide antibacterial drugs, e.g., erythromycin) or VOQUEZNA DUAL PAK: vonoprazan or amoxicillin (or other β-lactam antibacterials, e.g., penicillins and cephalosporins). Rilpivirine-containing Products VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK are contraindicated with rilpivirine-containing products.

Additional Contraindications to

VOQUEZNA TRIPLE PAK Due to the Clarithromycin Component Serious Adverse Reactions/Risks Due to Drug Interactions Because of the clarithromycin component, VOQUEZNA TRIPLE PAK is contraindicated with concomitant use of: Pimozide: There have been postmarketing reports of drug interactions when clarithromycin is co-administered with pimozide, resulting in cardiac arrhythmias (QT prolongation, ventricular tachycardia, ventricular fibrillation, and torsades de pointes ) most likely due to inhibition of metabolism of these drugs by clarithromycin. Fatalities have been reported. Lipid-lowering Agents: Lomitapide, simvastatin, and lovastatin Ergot Alkaloids: Ergotamine or dihydroergotamine Colchicine in patients with renal or hepatic impairment Lurasidone: Coadministration of clarithromycin and lurasidone may lead to an increase in lurasidone exposure and the potential for serious adverse reactions . Cholestatic Jaundice/Hepatic Dysfunction VOQUEZNA TRIPLE PAK is contraindicated in patients with a history of cholestatic jaundice or hepatic dysfunction associated with prior use of clarithromycin.

No information is available on accidental overdosage of VOQUEZNA TRIPLE PAK or VOQUEZNA DUAL PAK in humans. In case of an overdose, patients should contact a physician, poison control center, or emergency room. The available overdosage information for each of the individual components in VOQUEZNA TRIPLE PAK and VOQUEZNA DUAL PAK are summarized below: Vonoprazan There have been no reports of overdose with vonoprazan.

In clinical studies, a single dose of 120 mg resulted in no serious adverse reactions. Vonoprazan is not removed from the circulation by hemodialysis. If overdose occurs, treatment should be symptomatic and supportive.

Amoxicillin In case of amoxicillin overdosage, discontinue medication, treat symptomatically and institute supportive measures as needed. A prospective study of 51 pediatric patients at a poison-control center suggested that overdosages of less than 250 mg/kg of amoxicillin are not associated with significant clinical symptoms. Interstitial nephritis resulting in oliguric renal failure has been reported in a small number of patients after overdosage with amoxicillin.

Crystalluria, in some cases leading to renal failure, has also been reported after amoxicillin overdosage in adult and pediatric patients. In case of overdosage, adequate fluid intake and diuresis should be maintained to reduce the risk of amoxicillin crystalluria. Renal impairment appears to be reversible with cessation of drug administration.

High blood levels may occur more readily in patients with impaired renal function because of decreased renal clearance of amoxicillin. Amoxicillin can be removed from circulation by hemodialysis. Clarithromycin Overdosage of clarithromycin can cause gastrointestinal symptoms such as abdominal pain, vomiting, nausea, and diarrhea.

Treat adverse reactions accompanying overdosage by the prompt elimination of unabsorbed drug and supportive measures. As with other macrolides, clarithromycin serum concentrations are not expected to be appreciably affected by hemodialysis or peritoneal dialysis.