Dexlansoprazole Drug Information
Generic name: DEXLANSOPRAZOLE
Proton Pump Inhibitor [EPC]
Uses of Dexlansoprazole
Healing of Erosive Esophagitis
Dexlansoprazole delayed-release capsules are indicated in patients 12 years of age and older for healing of all grades of erosive esophagitis (EE) for up to eight weeks.
Maintenance of Healed Erosive Esophagitis and Relief of Heartburn Dexlansoprazole delayed-release capsules are indicated in patients 12 years of age and older to maintain healing of EE and relief of heartburn for up to six months in adults and 16 weeks in patients 12 to 17 years of age.
Treatment of Symptomatic Non-Erosive Gastroesophageal Reflux Disease Dexlansoprazole delayed-release capsules are indicated in patients 12 years of age and older for the treatment of heartburn associated with symptomatic non-erosive gastroesophageal reflux disease (GERD) for four weeks.
Dosage & Administration of Dexlansoprazole
Recommended Dosage in Patients 12 Years of Age and Older
Dosage Adjustment in Patients with Hepatic Impairment for the Healing of Erosive Esophagitis For patients with moderate hepatic impairment (Child-Pugh Class B), the recommended dosage is 30 mg dexlansoprazole delayed-release capsules once daily for up to eight weeks. Dexlansoprazole delayed-release capsule is not recommended in patients with severe hepatic impairment (Child-Pugh Class C).
Important Administration Information •
Take without regard to food. • Missed doses: If a dose is missed, administer as soon as possible. However, if the next scheduled dose is due, do not take the missed dose, and take the next dose on time. Do not take two doses at one time to make up for a missed dose. • Swallow whole; do not chew. • For patients who have trouble swallowing capsules, dexlansoprazole delayed-release capsules can be opened and administered with applesauce as follows: 1.
Place one tablespoonful of applesauce into a clean container. 2. Open capsule. 3. Sprinkle intact pellets on applesauce. 4.
Swallow applesauce and pellets immediately. Do not chew pellets. Do not save the applesauce and pellets for later use. • Alternatively, the capsule can be administered with water via oral syringe or nasogastric (NG) tube.
Administration with Water in an Oral Syringe 1. Open the capsule and empty the pellets into a clean container with 20 mL of water. 2. Withdraw the entire mixture into a syringe. 3.
Gently swirl the syringe in order to keep pellets from settling. 4. Administer the mixture immediately into the mouth. Do not save the water and pellet mixture for later use. 5.
Refill the syringe with 10 mL of water, swirl gently, and administer. 6. Administration with Water via a NG Tube (≥16 French) 1. Refill the catheter-tip syringe with 10 mL of water, swirl gently, and flush the tube. 5.
| Table 1. Recommended Dexlansoprazole Delayed-Release Capsules Dosage Regimen by Indication in Patients 12 Years of Age and Older | ||
| Indication | Dosage of Dexlansoprazole Delayed-Release Capsules | Duration |
| Healing of EE | One 60 mg capsule once daily. | Up to 8 weeks. |
| Maintenance of Healed EE and Relief of Heartburn | One 30 mg capsule once daily. | Controlled studies did not extend beyond 6 months in adults and 16 weeks in patients 12 to 17 years of age. |
| Symptomatic Non-Erosive GERD | One 30 mg capsule once daily. | 4 weeks. |
Side Effects of Dexlansoprazole
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. Adults The safety of dexlansoprazole was evaluated in 4548 adult patients in controlled and single-arm clinical trials, including 863 patients treated for at least six months and 203 patients treated for one year. Common Adverse Reactions The most common adverse reactions (>2%) that occurred at a higher incidence for dexlansoprazole than placebo in the controlled studies are presented in Table 2. s Resulting in Discontinuation In controlled clinical studies, the most common adverse reaction leading to discontinuation from dexlansoprazole was diarrhea (0.7%).
Less Common Adverse Reactions Other adverse reactions that were reported in controlled studies at an incidence of less than 2% are listed below by body system: Blood and Lymphatic System Disorders: anemia, lymphadenopathy Cardiac Disorders: angina, arrhythmia, bradycardia, chest pain, edema, myocardial infarction, palpitation, tachycardia Ear and Labyrinth Disorders: ear pain, tinnitus, vertigo Endocrine Disorders: goiter Eye Disorders: eye irritation, eye swelling Gastrointestinal Disorders: abdominal discomfort, abdominal tenderness, abnormal feces, anal discomfort, Barrett’s esophagus, bezoar, bowel sounds abnormal, breath odor, colitis microscopic, colonic polyp, constipation, dry mouth, duodenitis, dyspepsia, dysphagia, enteritis, eructation, esophagitis, gastric polyp, gastritis, gastroenteritis, gastrointestinal disorders, gastrointestinal hypermotility disorders, GERD, GI ulcers and perforation, hematemesis, hematochezia, hemorrhoids, impaired gastric emptying, irritable bowel syndrome, mucus stools, oral mucosal blistering, painful defecation, proctitis, paresthesia oral, rectal hemorrhage, retching General Disorders and Administration Site Conditions: adverse drug reaction, asthenia, chest pain, chills, feeling abnormal, inflammation, mucosal inflammation, nodule, pain, pyrexia Hepatobiliary Disorders: biliary colic, cholelithiasis, hepatomegaly Immune System Disorders: hypersensitivity Infections and Infestations: candida infections, influenza, nasopharyngitis, oral herpes, pharyngitis, sinusitis, viral infection, vulvo-vaginal infection Injury, Poisoning and Procedural Complications: falls, fractures, joint sprains, overdose, procedural pain, sunburn Laboratory Investigations: ALP increased, ALT increased, AST increased, bilirubin decreased/increased, blood creatinine increased, blood gastrin increased, blood glucose increased, blood potassium increased, liver function test abnormal, platelet count decreased, total protein increased, weight increase Metabolism and Nutrition Disorders: appetite changes, hypercalcemia, hypokalemia Musculoskeletal and Connective Tissue Disorders: arthralgia, arthritis, muscle cramps, musculoskeletal pain, myalgia Nervous System Disorders: altered taste, convulsion, dizziness, headaches, migraine, memory impairment, paresthesia, psychomotor hyperactivity, tremor, trigeminal neuralgia Psychiatric Disorders: abnormal dreams, anxiety, depression, insomnia, libido changes Renal and Urinary Disorders: dysuria, micturition urgency Reproductive System and Breast Disorders: dysmenorrhea, dyspareunia, menorrhagia, menstrual disorder Respiratory, Thoracic and Mediastinal Disorders: aspiration, asthma, bronchitis, cough, dyspnea, hiccups, hyperventilation, respiratory tract congestion, sore throat Skin and Subcutaneous Tissue Disorders: acne, dermatitis, erythema, pruritus, rash, skin lesion, urticaria Vascular Disorders: deep vein thrombosis, hot flush, hypertension Additional adverse reactions that were reported in a long-term single-arm trial and were considered related to dexlansoprazole by the treating physician included: anaphylaxis, auditory hallucination, B-cell lymphoma, bursitis, central obesity, cholecystitis acute, dehydration, diabetes mellitus, dysphonia, epistaxis, folliculitis, gout, herpes zoster, hyperlipidemia, hypothyroidism, increased neutrophils, MCHC decrease, neutropenia, rectal tenesmus, restless legs syndrome, somnolence, tonsillitis. Pediatrics The safety of dexlansoprazole was evaluated in controlled and single-arm clinical trials including 166 pediatric patients, 12 to 17 years of age for the treatment of symptomatic non-erosive GERD, healing of EE, maintenance of healed EE and relief of heartburn. The adverse reaction profile was similar to that of adults.
The most common adverse reactions that occurred in ≥5% of patients were headache, abdominal pain, diarrhea, nasopharyngitis and oropharyngeal pain. Other Adverse Reactions See the full prescribing information for lansoprazole for other adverse reactions not observed with dexlansoprazole.
Postmarketing Experience
The following adverse reactions have been identified during postapproval use of dexlansoprazole. 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. Blood and Lymphatic System Disorders: autoimmune hemolytic anemia, idiopathic thrombocytopenic purpura Ear and Labyrinth Disorders: deafness Eye Disorders: blurred vision Gastrointestinal Disorders: oral edema, pancreatitis, fundic gland polyps General Disorders and Administration Site Conditions: facial edema Hepatobiliary Disorders: drug-induced hepatitis Immune System Disorders: anaphylactic shock (requiring emergency intervention), exfoliative dermatitis, SJS/TEN (some fatal), DRESS, AGEP, erythema multiforme Infections and Infestations: Clostridium difficile-associated diarrhea Metabolism and Nutrition Disorders: hypomagnesemia, hypocalcemia, hypokalemia, hyponatremia Musculoskeletal System Disorders: bone fracture Nervous System Disorders: cerebrovascular accident, transient ischemic attack Renal and Genitourinary Disorders: acute renal failure, erectile dysfunction Respiratory, Thoracic and Mediastinal Disorders: pharyngeal edema, throat tightness Skin and Subcutaneous Tissue Disorders: generalized rash, leukocytoclastic vasculitis
| Table 2. Common Adverse Reactions in Controlled Studies in Adults | |||||
|---|---|---|---|---|---|
| Adverse Reaction | Placebo (N=896) % | Dexlansoprazole 30 mg (N=455) % | Dexlansoprazole 60 mg (N=2218) % | Dexlansoprazole Total (N=2621) % | Lansoprazole 30 mg (N=1363) % |
| Diarrhea | 2.9 | 5.1 | 4.7 | 4.8 | 3.2 |
| Abdominal Pain | 3.5 | 3.5 | 4 | 4 | 2.6 |
| Nausea | 2.6 | 3.3 | 2.8 | 2.9 | 1.8 |
| Upper Respiratory Tract Infection | 0.8 | 2.9 | 1.7 | 1.9 | 0.8 |
| Vomiting | 0.8 | 2.2 | 1.4 | 1.6 | 1.1 |
| Flatulence | 0.6 | 2.6 | 1.4 | 1.6 | 1.2 |
Warnings & Cautions for Dexlansoprazole
Presence of Gastric Malignancy
In adults, symptomatic response to therapy with dexlansoprazole does not preclude the presence of gastric malignancy. Consider additional follow-up and diagnostic testing in adult patients who have a suboptimal response or an early symptomatic relapse after completing treatment with a PPI. In older patients, also consider an endoscopy.
Acute Tubulointerstitial Nephritis
Acute tubulointerstitial nephritis (TIN) has been observed in patients taking PPIs and may occur at any point during PPI therapy. Patients may present with varying signs and symptoms from symptomatic hypersensitivity reactions to non-specific symptoms of decreased renal function (e.g., malaise, nausea, anorexia). In reported case series, some patients were diagnosed on biopsy and in the absence of extra-renal manifestations (e.g., fever, rash or arthralgia).
Discontinue dexlansoprazole and evaluate patients with suspected acute TIN.
Clostridium difficile-Associated Diarrhea
Published observational studies suggest that PPI therapy like dexlansoprazole may be associated with an increased risk of Clostridium difficile -associated diarrhea, especially in hospitalized patients. This diagnosis should be considered for diarrhea that does not improve. Patients should use the lowest dose and shortest duration of PPI therapy appropriate to the condition being treated.
Bone Fracture
Several published observational studies suggest that PPI therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist or spine. The risk of fracture was increased in patients who received high-dose, defined as multiple daily doses, and long-term PPI therapy (a year or longer). Patients at risk for osteoporosis-related fractures should be managed according to established treatment guidelines.
Severe Cutaneous Adverse Reactions
Severe cutaneous adverse reactions, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), drug reaction with eosinophilia and systemic symptoms (DRESS), and acute generalized exanthematous pustulosis (AGEP) have been reported in association with the use of PPIs. Discontinue dexlansoprazole at the first signs or symptoms of severe cutaneous adverse reactions or other signs of hypersensitivity and consider further evaluation.
Cutaneous and Systemic Lupus Erythematosus
Cutaneous lupus erythematosus (CLE) and systemic lupus erythematosus (SLE) have been reported in patients taking PPIs. These events have occurred as both new onset and an exacerbation of existing autoimmune disease. The majority of PPI-induced lupus erythematosus cases were CLE.
The most common form of CLE reported in patients treated with PPIs was subacute CLE (SCLE) and occurred within weeks to years after continuous drug therapy in patients ranging from infants to the elderly. Generally, histological findings were observed without organ involvement. Systemic lupus erythematosus (SLE) is less commonly reported than CLE in patients receiving PPIs.
PPI-associated SLE is usually milder than nondrug induced SLE. Onset of SLE typically occurred within days to years after initiating treatment primarily in patients ranging from young adults to the elderly. The majority of patients presented with rash; however, arthralgia and cytopenia were also reported.
Avoid administration of PPIs for longer than medically indicated. If signs or symptoms consistent with CLE or SLE are noted in patients receiving dexlansoprazole, discontinue the drug and refer the patient to the appropriate specialist for evaluation. Most patients improve with discontinuation of the PPI alone in four to 12 weeks.
Serological testing (e.g., ANA) may be positive and elevated serological test results may take longer to resolve than clinical manifestations.
Cyanocobalamin (Vitamin B12) Deficiency
Daily treatment with any acid-suppressing medications over a long period of time (e.g., longer than three years) may lead to malabsorption of cyanocobalamin (Vitamin B12) caused by hypo-or achlorhydria. Rare reports of cyanocobalamin deficiency occurring with acid-suppressing therapy have been reported in the literature. This diagnosis should be considered if clinical symptoms consistent with cyanocobalamin deficiency are observed in patients treated with dexlansoprazole.
Hypomagnesemia and Mineral Metabolism
Hypomagnesemia, symptomatic and asymptomatic, has been reported rarely in patients treated with PPIs for at least three months, in most cases after a year of therapy. Serious adverse events include tetany, arrhythmias, and seizures. Hypomagnesemia may lead to hypocalcemia and/or hypokalemia and may exacerbate underlying hypocalcemia in at-risk patients.
In most patients, treatment of hypomagnesemia required magnesium replacement and discontinuation of the PPI. For patients expected to be on prolonged treatment or who take PPIs with medications such as digoxin or drugs that may cause hypomagnesemia (e.g., diuretics), health care professionals may consider monitoring magnesium levels prior to initiation of PPI treatment and periodically. Consider monitoring magnesium and calcium levels prior to initiation of dexlansoprazole and periodically while on treatment in patients with a preexisting risk of hypocalcemia (e.g., hypoparathyroidism).
Supplement with magnesium and/or calcium as necessary. If hypocalcemia is refractory to treatment, consider discontinuing the PPI.
Interactions with Investigations for Neuroendocrine Tumors
Serum chromogranin A (CgA) levels increase secondary to drug-induced decreases in gastric acidity. The increased CgA level may cause false positive results in diagnostic investigations for neuroendocrine tumors. Healthcare providers should temporarily stop dexlansoprazole treatment at least 14 days before assessing CgA levels and consider repeating the test if initial CgA levels are high.
If serial tests are performed (e.g., for monitoring), the same commercial laboratory should be used for testing, as reference ranges between tests may vary.
Interaction with Methotrexate
Literature suggests that concomitant use of PPIs with methotrexate (primarily at high dose) may elevate and prolong serum levels of methotrexate and/or its metabolite, possibly leading to methotrexate toxicities. In high-dose methotrexate administration, a temporary withdrawal of the PPI may be considered in some patients.
Fundic Gland Polyps
PPI use is associated with an increased risk of fundic gland polyps that increases with long-term use, especially beyond one year. Most PPI users who developed fundic gland polyps were asymptomatic and fundic gland polyps were identified incidentally on endoscopy.
Risk of Heart Valve Thickening in Pediatric Patients Less Than Two Years of Age Dexlansoprazole is not recommended in pediatric patients less than two years of age. Nonclinical studies in juvenile rats with lansoprazole have demonstrated an adverse effect of heart valve thickening. Dexlansoprazole is the R-enantiomer of lansoprazole.
Drug Interactions with Dexlansoprazole
Tables 3 and 4 include drugs with clinically important drug interactions and interaction with diagnostics when administered concomitantly with dexlansoprazole and instructions for preventing or managing them. Consult the labeling of concomitantly used drugs to obtain further information about interactions with PPIs. Table 3.
Clinically Relevant Interactions Affecting Drugs Coadministered with Dexlansoprazole and Interactions with Diagnostics Antiretrovirals Clinical Impact: The effect of PPIs on antiretroviral drugs is variable. Intervention: Rilpivirine-containing products: Concomitant use with dexlansoprazole is contraindicated. See prescribing information.
No formal drug interaction studies of high-dose methotrexate with PPIs have been conducted. The increased CgA level may cause false positive results in diagnostic investigations for neuroendocrine tumors. Temporarily stop dexlansoprazole treatment at least 30 days before assessing to allow gastrin levels to return to baseline.
Decreased exposure of dexlansoprazole when used concomitantly with strong inducers. Intervention: St. CYP2C19 or CYP3A4 Inhibitors Clinical Impact: Increased exposure of dexlansoprazole is expected when used concomitantly with strong inhibitors.
Intervention: Voriconazole: See prescribing information. See full prescribing information for a list of clinically important drug interactions.
| Table 3. Clinically Relevant Interactions Affecting Drugs Coadministered with Dexlansoprazole and Interactions with Diagnostics | |
| Antiretrovirals | |
| Clinical Impact: | The effect of PPIs on antiretroviral drugs is variable. The clinical importance and the mechanisms behind these interactions are not always known. Decreased exposure of some antiretroviral drugs (e.g., rilpivirine, atazanavir, and nelfinavir) when used concomitantly with dexlansoprazole may reduce antiviral effect and promote the development of drug resistance. Increased exposure of other antiretroviral drugs (e.g., saquinavir) when used concomitantly with dexlansoprazole may increase toxicity of the antiretroviral drugs. There are other antiretroviral drugs which do not result in clinically relevant interactions with dexlansoprazole. |
| Intervention: | Rilpivirine-containing products: Concomitant use with dexlansoprazole is contraindicated [see Contraindications (4)]. See prescribing information. Atazanavir: See prescribing information for atazanavir for dosing information. Nelfinavir: Avoid concomitant use with dexlansoprazole. See prescribing information for nelfinavir. Saquinavir: See the prescribing information for saquinavir and monitor for potential saquinavir toxicities. Other antiretrovirals: See prescribing information. |
| Warfarin | |
| Clinical Impact: | Increased INR and prothrombin time in patients receiving PPIs and warfarin concomitantly. Increases in INR and prothrombin time may lead to abnormal bleeding and even death. |
| Intervention: | Monitor INR and prothrombin time. Dose adjustment of warfarin may be needed to maintain target INR range. See prescribing information for warfarin. |
| Methotrexate | |
| Clinical Impact: | Concomitant use of PPIs with methotrexate (primarily at high dose) may elevate and prolong serum concentrations of methotrexate and/or its metabolite hydroxymethotrexate, possibly leading to methotrexate toxicities. No formal drug interaction studies of high-dose methotrexate with PPIs have been conducted [see Warnings and Precautions (5.10)]. |
| Intervention: | A temporary withdrawal of dexlansoprazole may be considered in some patients receiving high-dose methotrexate. |
| Digoxin | |
| Clinical Impact: | Potential for increased exposure of digoxin. |
| Intervention: | Monitor digoxin concentrations. Dose adjustment of digoxin may be needed to maintain therapeutic drug concentrations. See prescribing information for digoxin. |
| Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) | |
| Clinical Impact: | Dexlansoprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity. |
| Intervention: | Mycophenolate mofetil (MMF): Coadministration of PPIs in healthy subjects and in transplant patients receiving MMF has been reported to reduce the exposure to the active metabolite, mycophenolic acid (MPA), possibly due to a decrease in MMF solubility at an increased gastric pH. The clinical relevance of reduced MPA exposure on organ rejection has not been established in transplant patients receiving dexlansoprazole and MMF. Use dexlansoprazole with caution in transplant patients receiving MMF. See the prescribing information for other drugs dependent on gastric pH for absorption. |
| Tacrolimus | |
| Clinical Impact: | Potentially increased exposure of tacrolimus, especially in transplant patients who are intermediate or poor metabolizers of CYP2C19. |
| Intervention: | Monitor tacrolimus whole blood trough concentrations. Dose adjustment of tacrolimus may be needed to maintain therapeutic drug concentrations. See prescribing information for tacrolimus. |
| Interactions with Investigations of Neuroendocrine Tumors | |
| Clinical Impact: | CgA levels increase secondary to PPI-induced decreases in gastric acidity. The increased CgA level may cause false positive results in diagnostic investigations for neuroendocrine tumors [see Warnings and Precautions (5.9), Clinical Pharmacology (12.2)]. |
| Intervention: | Temporarily stop dexlansoprazole treatment at least 14 days before assessing CgA levels and consider repeating the test if initial CgA levels are high. If serial tests are performed (e.g., for monitoring), the same commercial laboratory should be used for testing, as reference ranges between tests may vary. |
| Interaction with Secretin Stimulation Test | |
| Clinical Impact: | Hyper-response in gastrin secretion in response to secretin stimulation test, falsely suggesting gastrinoma. |
| Intervention: | Temporarily stop dexlansoprazole treatment at least 30 days before assessing to allow gastrin levels to return to baseline [see Clinical Pharmacology (12.2)]. |
| False Positive Urine Tests for THC | |
| Clinical Impact: | There have been reports of false positive urine screening tests for tetrahydrocannabinol (THC) in patients receiving PPIs. |
| Intervention: | An alternative confirmatory method should be considered to verify positive results. |
| Table 4. Clinically Relevant Interactions Affecting Dexlansoprazole When Coadministered with Other Drugs and Substances | |
| CYP2C19 or CYP3A4 Inducers | |
| Clinical Impact: | Decreased exposure of dexlansoprazole when used concomitantly with strong inducers [see Clinical Pharmacology (12.3)]. |
| Intervention: | St. John’s Wort, rifampin: Avoid concomitant use with dexlansoprazole. Ritonavir-containing products: See prescribing information. |
| CYP2C19 or CYP3A4 Inhibitors | |
| Clinical Impact: | Increased exposure of dexlansoprazole is expected when used concomitantly with strong inhibitors [see Clinical Pharmacology (12.3)]. |
| Intervention: | Voriconazole: See prescribing information. |
Pregnancy Safety for Dexlansoprazole
Pregnancy Risk Summary There are no studies with dexlansoprazole use in pregnant women to inform a drug-associated risk. Dexlansoprazole is the R-enantiomer of lansoprazole, and published observational studies of lansoprazole use during pregnancy did not demonstrate an association of adverse pregnancy-related outcomes with lansoprazole ( see Data ). In animal reproduction studies, oral administration of lansoprazole to rats during organogenesis through lactation at 1.8 times the maximum recommended human dexlansoprazole dose produced reductions in the offspring in femur weight, femur length, crown-rump length and growth plate thickness (males only) on postnatal Day 21 ( see Data ).
These effects were associated with reduction in body weight gain. Advise pregnant women of the potential risk to the fetus. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown.
All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the US general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is respectively. Data Human Data Dexlansoprazole is the R-enantiomer of lansoprazole.
Available data from published observational studies failed to demonstrate an association of adverse pregnancy-related outcomes and lansoprazole use. Methodological limitations of these observational studies cannot definitely establish or exclude any drug-associated risk during pregnancy. In a prospective study by the European Network of Teratology Information Services, outcomes from a group of 62 pregnant women administered median daily doses of 30 mg of lansoprazole were compared to a control group of 868 pregnant women who did not take any PPIs.
There was no difference in the rate of major malformations between women exposed to PPIs and the control group, corresponding to a Relative Risk (RR) = 1.04,. In a population-based retrospective cohort study covering all live births in Denmark from 1996 to 2008, there was no significant increase in major birth defects during analysis of first trimester exposure to lansoprazole in 794 live births. A meta-analysis that compared 1,530 pregnant women exposed to PPIs in at least the first trimester with 133,410 unexposed pregnant women showed no significant increases in risk for congenital malformations or spontaneous abortion with exposure to PPIs (for major malformations Odds Ratio (OR) =1.12, and for spontaneous abortions OR=1.29, ).
Animal Data An embryo-fetal development study conducted in rabbits at oral dexlansoprazole doses up to 30 mg/kg/day (approximately nine times the maximum recommended human dexlansoprazole dose based on body surface area) during organogenesis showed no effects on fetuses due to dexlansoprazole. In addition, embryo-fetal development studies performed in rats with oral lansoprazole at doses up to 150 mg/kg/day (40 times the recommended human lansoprazole dose based on body surface area) during organogenesis and in rabbits with oral lansoprazole at doses up to 30 mg/kg/day (16 times the recommended human lansoprazole dose based on body surface area) during organogenesis revealed no effects on fetuses due to lansoprazole. A pre- and postnatal developmental toxicity study in rats with additional endpoints to evaluate bone development was performed with lansoprazole at oral doses of 10 to 100 mg/kg/day (0.2 to 1.8 times the maximum recommended human dexlansoprazole dose of 60 mg based on dexlansoprazole AUC ) administered during organogenesis through lactation.
Maternal effects observed at 100 mg/kg/day (1.8 times the maximum recommended human dexlansoprazole dose of 60 mg based on dexlansoprazole AUC) included increased gestation period, decreased body weight gain during gestation, and decreased food consumption. The number of stillbirths was increased at this dose, which may have been secondary to maternal toxicity. Body weight of pups was reduced at 100 mg/kg/day starting on postnatal Day 11.
Femur weight, femur length, and crown-rump length were reduced at 100 mg/kg/day on postnatal Day 21. Femur weight was still decreased in the 100 mg/kg/day group at age 17 to 18 weeks.
Pediatric Use of Dexlansoprazole
Pediatric Use The safety and effectiveness of dexlansoprazole have been established in pediatric patients 12 years to 17 years of age for the healing of all grades of EE, the maintenance of healed EE and relief of heartburn, and treatment of heartburn associated with symptomatic non-erosive GERD. Use of dexlansoprazole in this age group is supported by evidence from adequate and well-controlled studies of dexlansoprazole in adults with additional safety, efficacy and pharmacokinetic data in pediatric patients 12 to 17 years of age. The adverse reaction profile in patients 12 to 17 years of age was similar to adults.
The safety and effectiveness of dexlansoprazole have not been established in pediatric patients less than 12 years of age. Dexlansoprazole is not recommended in pediatric patients less than two years of age. Nonclinical studies in juvenile rats treated with lansoprazole (the racemic mixture) have demonstrated adverse effects of heart valve thickening and bone changes at dexlansoprazole exposures which are expected to be similar to or higher than the dexlansoprazole exposure in pediatric patients one year to two years of age, as described below in Juvenile Animal Toxicity Data.
The use of dexlansoprazole is not recommended for the treatment of symptomatic GERD in pediatric patients one month to less than one year of age because lansoprazole was not shown to be effective in a multicenter, double-blind controlled trial. Juvenile Animal Toxicity Data Heart Valve Thickening In two oral toxicity studies, thickening of the mitral heart valve occurred in juvenile rats treated with lansoprazole. Heart valve thickening was observed primarily with oral dosing initiated on postnatal Day 7 (age equivalent to neonatal humans) and postnatal Day 14 (human age equivalent of approximately one year) at doses of 250 mg/kg/day and higher (at postnatal Day 7 and postnatal Day 14 respectively, 2.5 and 1.8 times the expected dexlansoprazole exposure based on AUC in pediatric patients one year to two years of age).
The treatment durations associated with heart valve thickening ranged from 5 days to 8 weeks. The findings reversed or trended towards reversibility after a 4-week drug-free recovery period. The incidence of heart valve thickening after initiation of dosing on postnatal Day 21 (human age equivalent of approximately two years) was limited to a single rat (1/24) in groups given 500 mg/kg/day for 4 or 8 weeks (2.1 times the expected dexlansoprazole exposure based on AUC in pediatric patients one year to two years of age).
Based on the low incidence of heart valve thickening in 21-day old rats and the equivalent human age, the risk of heart valve injury does not appear to be relevant to patients two years of age and older. Bone Changes In an eight-week oral toxicity study of lansoprazole in juvenile rats with dosing initiated on postnatal Day 7, doses equal to or greater than 100 mg/kg/day (dexlansoprazole exposure based on AUC approximately equal to that in pediatric patients one year to two years of age) produced delayed growth, with impairment of weight gain observed as early as postnatal Day 10 (age equivalent to neonatal humans). At the end of treatment, the signs of impaired growth at 100 mg/kg/day and higher included reductions in body weight (14 to 44% compared to controls), absolute weight of multiple organs, femur weight, femur length and crown-rump length.
Femoral growth plate thickness was reduced only in males and only at the 500 mg/kg/day dose. The effects related to delayed growth persisted through the end of the four-week recovery period. Longer term data were not collected.
Contraindications for Dexlansoprazole
- Dexlansoprazole delayed-release capsules are contraindicated in patients with known hypersensitivity to any component of the formulation. Hypersensitivity reactions may include anaphylaxis, anaphylactic shock, angioedema, bronchospasm, acute tubulointerstitial nephritis and urticaria.
- PPIs, including dexlansoprazole delayed-release capsules, are contraindicated with rilpivirine-containing products.
- Patients with known hypersensitivity to any component of the formulation.
- Patients receiving rilpivirine-containing products.
Overdosage Information for Dexlansoprazole
There have been no reports of significant overdose with dexlansoprazole. Multiple doses of dexlansoprazole 120 mg and a single dose of dexlansoprazole 300 mg did not result in death or other severe adverse events. However, serious adverse events of hypertension have been reported in association with twice daily doses of dexlansoprazole 60 mg.
Nonserious adverse reactions observed with twice daily doses of dexlansoprazole 60 mg include hot flashes, contusion, oropharyngeal pain, and weight loss. Dexlansoprazole is not expected to be removed from the circulation by hemodialysis. In the event of over-exposure, treatment should be symptomatic and supportive.
If over-exposure occurs, call your poison control center at 1-800-222-1222 for current information on the management of poisoning or over-exposure.
Clinical Studies of Dexlansoprazole
Healing of Erosive Esophagitis in Adults
Two multicenter, double-blind, active-controlled, randomized, eight week studies were conducted in patients with endoscopically confirmed EE. Severity of the disease was classified based on the Los Angeles Classification Grading System (Grades A-D). Patients were randomized to one of the following three treatment groups: dexlansoprazole 60 mg once daily, dexlansoprazole 90 mg once daily or lansoprazole 30 mg once daily.
Patients who were H. pylori positive or who had Barrett’s Esophagus and/or definite dysplastic changes at baseline were excluded from these studies. Race was distributed as follows: 87% Caucasian, 5% Black and 8% Other. Based on the Los Angeles Classification, 71% of patients had mild EE (Grades A and B) and 29% of patients had moderate to severe EE (Grades C and D) before treatment.
The studies were designed to test noninferiority. If noninferiority was demonstrated then superiority would be tested. Although noninferiority was demonstrated in both studies, the finding of superiority in one study was not replicated in the other.
The proportion of patients with healed EE at Week 4 or 8 is presented below in Table 8. CI = Confidence interval Based on crude rate estimates, patients who did not have endoscopically documented healed EE and prematurely discontinued were considered not healed. Patients with at least one postbaseline endoscopy. Primary efficacy endpoint. § Demonstrated noninferiority to lansoprazole. Dexlansoprazole 90 mg once daily was studied and did not provide additional clinical benefit over dexlansoprazole 60 mg once daily.
Maintenance of Healed Erosive Esophagitis and Relief of Heartburn in Adults A multicenter, double-blind, placebo-controlled, randomized study was conducted in patients who successfully completed an EE study and showed endoscopically confirmed healed EE. Maintenance of healing and symptom resolution over a six month period was evaluated with dexlansoprazole 30 or 60 mg once daily compared to placebo. The effect of dexlansoprazole 30 mg on maintenance of relief of heartburn was also evaluated.
Upon entry into the maintenance study, a majority of patients’ baseline heartburn severity was rated as none. Dexlansoprazole 30 mg demonstrated a statistically significantly higher percent of 24 hour heartburn-free periods compared to placebo over the six month treatment period (see Table 10 ). The majority of patients treated with placebo discontinued due to relapse of EE between Month 2 and Secondary efficacy endpoint Statistically significant vs placebo
Treatment of Symptomatic Non-Erosive GERD in Adults
A multicenter, double-blind, placebo-controlled, randomized, four week study was conducted in patients with a diagnosis of symptomatic non-erosive GERD made primarily by presentation of symptoms. These patients who identified heartburn as their primary symptom, had a history of heartburn for six months or longer, had heartburn on at least four of seven days immediately prior to randomization and had no esophageal erosions as confirmed by endoscopy. However, patients with symptoms which were not acid-related may not have been excluded using these inclusion criteria.
Race was distributed as follows: 82% Caucasian, 14% Black and 4% Other. Dexlansoprazole 30 mg provided statistically significantly greater percent of days with heartburn-free 24 hour periods over placebo as assessed by daily diary over four weeks (see Table 11 ). Dexlansoprazole 60 mg once daily was studied and provided no additional clinical benefit over dexlansoprazole 30 mg once daily. Statistically significant vs placebo A higher percentage of patients on dexlansoprazole 30 mg had heartburn-free 24 hour periods compared to placebo as early as the first three days of treatment and this was sustained throughout the treatment period (percentage of patients on Day 3: dexlansoprazole 38% vs placebo 15%; on Day 28: dexlansoprazole 63% vs placebo 40%).
Pediatric GERD Use of dexlansoprazole in patients 12 to 17 years of age is supported by evidence from adequate and well- controlled studies of dexlansoprazole capsules in adults, with additional safety, efficacy, and pharmacokinetic data from studies performed in pediatric patients. Healing of EE, Maintenance of Healed EE and Relief of Heartburn In a multicenter, 36 week trial, 62 patients 12 to 17 years of age with a documented history of GERD for at least three months and endoscopically-proven erosive esophagitis (EE) were enrolled to evaluate the healing of EE, maintenance of healed EE and relief of heartburn, followed by an additional 12 weeks without treatment. The median age was 15 years, with males accounting for 61% of the patients.
In the first eight weeks, 62 patients were treated with dexlansoprazole 60 mg once daily to evaluate the healing of EE. Table 12. After the initial eight weeks of treatment, all 51 patients with healed EE were randomized to receive treatment with dexlansoprazole 30 mg or placebo, once daily for an additional 16 weeks to evaluate maintenance of healing and symptom resolution.
Maintenance of healing was assessed by endoscopy at Week 24. Of the 51 patients randomized, 13 patients discontinued early. Of these, five patients did not undergo postbaseline endoscopy.
Table 13. Maintenance of Healed EE at Week 24* in Pediatric Patients 12 to 17 Years of Age Dexlansoprazole 30 mg Placebo Proportion of randomized patients who maintained healing of EE n (%) Proportion of evaluable patients who maintained healing of EE n (%) Following eight weeks of initial therapy and 16 weeks of maintenance therapy. Includes patients with at least one postbaseline endoscopy. Reported are the exact confidence limits. Relief of heartburn was assessed in randomized patients during the 16 week maintenance period.
Twenty-four of the 27 patients completed the 12 week follow-up period. One patient required treatment with acid suppression therapy. Treatment of Symptomatic Non-Erosive GERD In a single-arm, open-label, multicenter trial, 104 pediatric patients 12 to 17 years of age with symptomatic non-erosive GERD were treated with dexlansoprazole 30 mg once daily, for four weeks to evaluate safety and effectiveness.
Patients had a documented history of GERD symptoms for at least three months prior to screening, reported heartburn on at least three out of seven days during screening, and had no esophageal erosions as confirmed by endoscopy. The median age was 15 years, with females accounting for 70% of the patients. During the four week treatment period, the median percentage of 24 hour heartburn free periods was 47%.
| Table 8. EE Healing Rates* in Adults: All Grades | |||||
| Study | Number of Patients (N) | Treatment Group (daily) | Week 4 % Healed | Week 8 % Healed | (95% CI) for the Treatment Difference ( Dexlansoprazole –Lansoprazole) by Week 8 |
| 1 | 657 | Dexlansoprazole 60 mg | 70 | 87 | (-1.5, 6.1) § |
| 648 | Lansoprazole 30 mg | 65 | 85 | ||
| 2 | 639 | Dexlansoprazole 60 mg | 66 | 85 | (2.2, 10.5) § |
| 656 | Lansoprazole 30 mg | 65 | 79 | ||
| Table 9. Maintenance Rates of Healed EE at Month 6 in Adults | ||
| Number of Patients (N) | Treatment Group (daily) | Maintenance Rate (%) |
| 125 | Dexlansoprazole 30 mg | 66.4 |
| 119 | Placebo | 14.3 |
| Table 10. Median Percentage of 24 Hour Heartburn-Free Periods of the Maintenance of Healed EE Study in Adults | ||||||
| Overall Treatment | Month 1 | Month 6 | ||||
| Treatment Group (daily) | N | Heartburn- Free 24 hour Periods (%) | N | Heartburn- Free 24 hour Periods (%) | N | Heartburn- Free 24 hour Periods (%) |
| Dexlansoprazole 30 mg | 132 | 96.1 | 126 | 96.7 | 80 | 98.3 |
| Placebo | 141 | 28.6 | 117 | 28.6 | 23 | 73.3 |
| Table 11. Median Percentages of 24 Hour Heartburn-Free Periods During the 4 Week Treatment Period of the Symptomatic Non-Erosive GERD Study in Adults | ||
| N | Treatment Group (daily) | Heartburn-Free 24 hour Periods (%) |
| 312 | Dexlansoprazole 30 mg | 54.9 |
| 310 | Placebo | 18.5 |
| Table 12. Healing of EE at Week 8 in Pediatric Patients 12 to 17 Years of Age | |
|---|---|
| Dexlansoprazole 60 mg | |
| Proportion of randomized patients healed n (%) 95% CI | 51/62 (82%) (70, 91) |
| Proportion of evaluable patients healed n (%) 95% CI | 51/58 (88%) (77, 95) |
| Table 13. Maintenance of Healed EE at Week 24* in Pediatric Patients 12 to 17 Years of Age | ||
| Dexlansoprazole 30 mg | Placebo | |
| Proportion of randomized patients who maintained healing of EE n (%) 95% Cl | 18/25 (72%) (51, 88) | 14/26 (54%) (33, 73) |
| Proportion of evaluable patients who maintained healing of EE n (%) 95% Cl | 18/22 (82%) (60, 95) | 14/24 (58%) (37, 78) |
Drug information sourced from the FDA. This content is for informational purposes only and does not constitute medical advice. Consult a healthcare professional before making any medication decisions.
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