Metadate Drug Information

METADATE CD is indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in pediatric patients 6 to 15 years of age. Limitations of Use The use of METADATE CD is not recommended in pediatric patients younger than 6 years of age because they had higher plasma exposure and a higher incidence of adverse reactions (e.g. weight loss) than patients 6 years and older at the same dosage.

Pretreatment Screening Prior to treating patients with METADATE CD, assess: The risk for abuse, misuse, and addiction. For the presence of cardiac disease (e.g., perform a careful history, family history of sudden death or ventricular arrhythmia, and physical exam). The risk for developing a manic episode (e.g., history of depressive symptoms or a family history of suicide, bipolar disorder, or depression).

For a family history for tics or Tourette syndrome and clinically evaluate patients for motor or verbal tics or Tourette’s syndrome.

Dosage Recommendations

The recommended starting dose of METADATE CD is 20 mg once daily. Dosage may be adjusted in weekly 10 mg to 20 mg increments to the maximum recommended dose of 60 mg per day. Dosage should be individualized according to the needs and responses of the patient.

Administration Instructions Administer METADATE

CD orally once daily in the morning, before breakfast. Swallow the capsule whole with the aid of liquids. Alternatively, open the capsule and sprinkle the contents onto a small amount (tablespoon) of applesauce and administer immediately.

Do not store for future use. Drink fluids following the intake of the sprinkled capsule contents with applesauce. The capsules and the capsule contents must not be crushed or chewed.

Dosage Reduction and Discontinuation

If paradoxical aggravation of symptoms or other adverse reactions occur, reduce dosage or, if necessary, discontinue METADATE CD. If improvement is not observed after appropriate dosage adjustment over a one-month period, discontinue METADATE CD.

Switching from a Monoamine Oxidase Inhibitor

Must wait at least 14 days after stopping a monoamine oxidase (MAO) inhibitor before starting METADATE CD.

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. Clinical trials experience with METADATE CD included 188 pediatric patients 6 to 15 years old with ADHD exposed to METADATE CD. Patients received METADATE CD 20 mg, 40 mg, and/or 60 mg per day.

Adverse Reactions Leading to Discontinuation of Treatment In the 3-week placebo-controlled, parallel-group trial, two METADATE CD-treated patients (1%) and no placebo-treated patients discontinued due to an adverse reaction (rash and pruritus; and headache, abdominal pain, and dizziness, respectively). Most Common Adverse Reactions The most common adverse reactions that occurred in 5% or more of patients treated with METADATE CD in a pool of Studies 1, 2 and 3 (ages 6 to 15 years) where the incidence in patients treated with METADATE CD was at least twice the incidence in placebo-treated patients were anorexia and insomnia. Because these reactions are reported voluntarily from a population of uncertain size, it is not possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Adverse Reactions with METADATE CD Blood and the lymphatic system disorders: thrombocytopenia Cardiac disorders: cardiac arrest, sudden death Immune system disorders: angioedema Musculoskeletal and connective tissue disorders: rhabdomyolysis Psychiatric disorders: abnormal behavior, aggression, anxiety, irritability, obsessive-compulsive disorder, suicidal behavior (including completed suicide), libido changes, serotonin syndrome in combination with serotonergic drugs Nervous System Disorder: migraine, reversible ischemic neurological deficit, bruxism Skin and subcutaneous tissue disorders: fixed drug eruption Vascular disorders: peripheral coldness, Raynaud’s phenomenon Adverse Reactions with Other Methylphenidate HCl Products Blood and the lymphatic system disorders: leukopenia, anemia, pancytopenia Cardiac disorders: palpitations; increased blood pressure, tachycardia, angina pectoris, cardiac arrhythmia, myocardial infarction, bradycardia, extrasystole Eye disorders: blurred vision, difficulties in visual accommodation, diplopia, increased intraocular pressure, mydriasis Gastrointestinal disorders: nausea, abdominal pain, dry mouth, vomiting, dyspepsia, diarrhea, constipation General Disorders: fatigue, hyperpyrexia Hepatobiliary disorders: abnormal liver function, ranging from transaminase elevation to severe hepatic injury Immune system disorders: hypersensitivity, including anaphylaxis, auricular swelling, bullous conditions, eruptions, exanthemas Infections and infestations: nasopharyngitis Metabolism and nutrition disorders: decreased appetite, reduced weight gain and suppression of growth during prolonged use in pediatric patients Musculoskeletal and connective tissue disorders: arthralgia, muscle cramps, myalgia, muscle twitching Nervous System Disorder: nervousness, dizziness, headache, dyskinesia, including choreoatheetoid movements, drowsiness, tremor, convulsions, cerebrovascular disorders (including vasculitis, cerebral hemorrhages and cerebrovascular accidents), serotonin syndrome in combination with serotonergic drugs, motor and verbal tics Psychiatric disorders: depressed mood, restlessness, agitation, psychosis (sometimes with visual and tactile hallucinations), affect liability, mania, disorientation Renal and urinary disorders: hematuria Reproductive system and breast disorders: gynecomastia Respiratory, thoracic and mediastinal disorders: pharyngolaryngeal pain, dyspnea, cough Skin and subcutaneous tissue disorders: scalp hair loss, hyperhidrosis, angioneurotic edema, erythema, exfoliative dermatitis, thrombocytopenic purpura, urticaria, erythema multiforme rash Urogenital disorders: priapism Vascular disorders: isolated cases of cerebral arteritis and/or occlusion

Table 3 describes clinically significant drug interactions with METADATE CD. Table 3: Clinically Significant Drug Interactions METADATE CD may decrease effectiveness of drugs used to treat hypertension.: Monitor blood pressure. Adjust dosage of antihypertensive drug as needed See Full Prescribing Information, for additional clinically significant drug interactions.

Pregnancy There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to ADHD medications, including METADATE CD, during pregnancy. Healthcare providers are encouraged to register patients by calling the National Pregnancy Registry for Psychostimulants at 1-866-961-2388. Risk Summary Published studies and postmarketing reports on methylphenidate use during pregnancy have inconsistent findings about a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes.

There are risks to the fetus associated with the use of central nervous system (CNS) stimulants during pregnancy (see Clinical Considerations ). No effects on morphological development were observed in embryo-fetal development studies with oral administration of methylphenidate to pregnant rats and rabbits during organogenesis at doses up to 10 and 15 times, respectively, the maximum recommended human dose (MRHD) of 60 mg/day given to adolescents on a mg/m 2 basis. However, spina bifida was observed in rabbits at a dose 53 times the MRHD given to adolescents.

A decrease in pup body weight was observed in a pre-and post-natal development study with oral administration of methylphenidate to rats throughout pregnancy and lactation at doses 6 times the MRHD given to adolescents (see Data ). The background risk of major birth defects and miscarriage in those with ADHD is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is respectively. Clinical Considerations Fetal/Neonatal Adverse Reactions CNS stimulants, such as METADATE CD, can cause vasoconstriction and thereby decrease placental perfusion. No fetal and/or neonatal adverse reactions have been reported with the use of therapeutic doses of methylphenidate during pregnancy; however, premature delivery and low birth weight infants have been reported in amphetamine-dependent mothers.

Animal Data In embryo-fetal development studies conducted in rats and rabbits, methylphenidate was administered orally at doses of up to 75 and 200 mg/kg/day, respectively, during the period of organogenesis. Malformations (increased incidence of fetal spina bifida) were observed in rabbits at the highest dose, which is approximately 52 times the MRHD of 60 mg/day given to adolescents on a mg/m 2 basis. The no effect level for embryo-fetal development in rabbits was 60 mg/kg/day (15 times the MRHD given to adolescents on a mg/m 2 basis).

There was no evidence of morphological development effects in rats, although increased incidences of fetal skeletal variations were seen at the highest dose level (10 times the MRHD of 60 mg/day given to adults on a mg/m 2 basis), which was also maternally toxic. The no effect level for embryo-fetal development in rats was 25 mg/kg/day (3 times the MRHD on a mg/m 2 basis). When methylphenidate was administered to rats throughout pregnancy and lactation at doses of up to 45 mg/kg/day, offspring body weight gain was decreased at the highest dose (6 times the MRHD of 60 mg/day given to adults on a mg/m 2 basis), but no other effects on postnatal development were observed.

The no effect level for pre-and postnatal development in rats was 15 mg/kg/day (~2 times the MRHD given to adolescents on a mg/m 2 basis).

Pediatric Use The safety and effectiveness of Metadate CD have not been established in pediatric patients below the age of 6 years. In studies evaluating extended-release methylphenidate products, patients 4 to <6 years of age had higher systemic methylphenidate exposures than those observed in older pediatric patients at the same dosage. Pediatric patients 4 to <6 years of age also had a higher incidence of adverse reactions, including weight loss.

The safety and effectiveness of Metadate CD for the treatment of ADHD have been established in pediatric patients 6 to 15 years of age. Long-Term Suppression of Growth Growth should be monitored during treatment with stimulants, including Metadate CD. Pediatric patients who are not growing or gaining weight as expected may need to have their treatment interrupted.

Juvenile Animal Toxicity Data In a study conducted in young rats, methylphenidate was administered orally at doses of up to 100 mg/kg/day for 9 weeks, starting early in the postnatal period (postnatal Day 7) and continuing through sexual maturity (postnatal Week 10). When these animals were tested as adults (postnatal Weeks 13 to 14), decreased spontaneous locomotor activity was observed in males and females previously treated with 50 mg/kg/day (approximately 6 times the MRHD on a mg/m2 basis) or greater, and a deficit in the acquisition of a specific learning task was seen in females exposed to the highest dose (12 times the MRHD on a mg/m2 basis). The no effect level for juvenile neurobehavioral development in rats was 5 mg/kg/day (half the MRHD on a mg/m2 basis).

The clinical significance of the long-term behavioral effects observed in rats is unknown.

METADATE CD is contraindicated in patients with: Known hypersensitivity to methylphenidate or other component of METADATE CD. Angioedema has been reported in patients treated with METADATE CD. Anaphylactic reactions have been reported in patients treated with other methylphenidate products.

Concomitant treatment with monoamine oxidase inhibitors (MAOIs), or within 14 days following discontinuation of treatment with an MAOI, because of the risk of hypertensive crisis. METADATE CD contains sucrose. Therefore, patients with hereditary problems of fructose intolerance, glucose-galactose malabsorption, or sucrase-isomaltase insufficiency should not take this medicine.

Pheochromocytoma or a history of pheochromocytoma. Serious reactions, including elevated blood pressure and tachyarrhythmia, have been reported in patients with pheochromocytoma or a history of pheochromocytoma who received a methylphenidate product.

Clinical Effects of Overdose Overdose of CNS stimulants is characterized by the following sympathomimetic effects: Cardiovascular effects including tachyarrhythmias, and hypertension or hypotension. Vasospasm, myocardial infarction, or aortic dissection may precipitate sudden cardiac death. Takotsubo cardiomyopathy may develop.

CNS effects including psychomotor agitation, confusion, and hallucinations. Serotonin syndrome, seizures, cerebral vascular accidents, and coma may occur. Life-threatening hyperthermia (temperatures greater than 104ºF) and rhabdomyolysis may develop.

Posterior reversible encephalopathy syndrome (PRES) symptoms including headache, altered mental status, hypertension, seizures, and visual disturbances including blindness have occurred in the setting of a methylphenidate product overdose. Symptoms of PRES are usually reversible but may evolve into ischemic stroke or cerebral hemorrhage. Diagnosis of PRES should be confirmed by radiological procedure (e.g., MRI).

Overdose Management Consider the possibility of multiple drug ingestion. The pharmacokinetic profile of METADATE CD should be considered when treating patients with overdose. Because methylphenidate has a large volume of distribution and is rapidly metabolized, dialysis is not useful.

If an overdose of METADATE CD occurs, consider contacting the Poison Help line (1-800-222-1222) or a medical toxicologist for additional overdose management recommendations.