Dexmethylphenidateside effects

The following are discussed in more detail in other sections of the labeling: Abuse, Misuse and Addiction Known hypersensitivity to methylphenidate or other ingredients of dexmethylphenidate hydrochloride tablets Hypertensive crisis with Concomitant Use of Monoamine Oxidase Inhibitors Risks to Patients with Serious Cardiac Disease Increased Blood Pressure and Heart Rate Psychiatric Adverse Reactions Priapism Peripheral Vasculopathy, Including Raynaud’s phenomenon Long-Term Suppression of Growth in Pediatric Patients Acute Angle Closure Glaucoma Increased Intraocular Pressure and Glaucoma Motor and Verbal Tics, and Worsening of Tourette’s Syndrome The most common adverse reactions (greater than or equal to 5% and twice the rate of placebo) in pediatric patients 6 to 17 years were abdominal pain, fever, nausea, and anorexia. To report SUSPECTED ADVERSE REACTIONS, contact KVK-Tech, INC. at 1-800-862-3895 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1 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 clinical practice. Adverse Reactions in Studies with dexmethylphenidate hydrochloride tablets in Pediatric Patients With ADHD The safety data in this section is based on data related to dexmethylphenidate hydrochloride tablets exposure during the premarketing development program in a total of 696 participants in clinical trials (684 patients, 12 healthy adult subjects). These participants received dexmethylphenidate hydrochloride tablets 5, 10, or 20 mg/day. The 684 ADHD patients (ages 6 to 17 years) were evaluated in 2 controlled clinical studies, 2 clinical pharmacology studies, and 2 open-label long-term safety studies. Most Common Adverse Reactions (incidence of greater than or equal to 5% and at least twice placebo): abdominal pain, fever, anorexia, and nausea Adverse Reactions Leading to Discontinuation: Overall, 50 of 684 (7.3%) pediatric patients treated with dexmethylphenidate hydrochloride tablets experienced an adverse reaction that resulted in discontinuation. The most common reasons for discontinuation were twitching (described as motor or vocal tics), anorexia, insomnia, and tachycardia (approximately 1% each). Table 1 enumerates adverse reactions for two, placebo-controlled, parallel group studies in pediatric patients with ADHD taking dexmethylphenidate hydrochloride tablets doses of 5, 10, and 20 mg/day. The table includes only those reactions that occurred in patients treated with dexmethylphenidate hydrochloride tablets for which the incidence was at least 5% and twice the incidence among placebo-treated patients.

Table 1: Common Adverse Reactions in Pediatric Patients (6 to 17 years of age) With ADHD System Organ Class Adverse Reactions Dexmethylphenidate Hydrochloride tablets (N = 79) Placebo Body as a whole Abdominal pain 15 % 6% Fever 5% 1% Digestive System Anorexia 6% 1% Nausea 9% 1% Abbreviation: ADHD, attention deficit hyperactivity disorder.

6.2 Postmarketing

Experience The following additional adverse reactions have been identified during post approval use of dexmethylphenidate. 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.

Musculoskeletal: rhabdomyolysis Immune System Disorders: hypersensitivity reactions, such as angioedema, anaphylactic reactions Adverse Reactions Reported With All RITALIN® and dexmethylphenidate hydrochloride tablets Formulations The following adverse reactions associated with the use of all dexmethylphenidate hydrochloride tablets formulations were identified in clinical trials, spontaneous reports, and literature. Because these reactions were reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency reliably or to establish a causal relationship to drug exposure.

Infections and Infestations: nasopharyngitis Blood and the Lymphatic System Disorders: leukopenia, thrombocytopenia, anemia Immune System Disorders: hypersensitivity reactions, including angioedema and anaphylaxis Metabolism and Nutrition Disorders: decreased appetite, reduced weight gain, and suppression of growth during prolonged use in pediatric patients Psychiatric Disorders: insomnia, anxiety, restlessness, agitation, psychosis (sometimes with visual and tactile hallucinations), depressed mood, depression Nervous System Disorders: headache, dizziness, tremor, dyskinesia, including choreoatheetoid movements, drowsiness, convulsions, cerebrovascular disorders (including vasculitis, cerebral hemorrhages, and cerebrovascular accidents), serotonin syndrome in combination with serotonergic drugs Eye Disorders: blurred vision, difficulties in visual accommodation Cardiac Disorders: tachycardia, palpitations, increased blood pressure, arrhythmias, angina pectoris Respiratory, Thoracic, and Mediastinal Disorders: cough Gastrointestinal Disorders: dry mouth, nausea, vomiting, abdominal pain, dyspepsia Hepatobiliary Disorders: abnormal liver function, ranging from transaminase elevation to severe hepatic injury Skin and Subcutaneous Tissue Disorders: hyperhidrosis, pruritus, urticaria, exfoliative dermatitis, scalp hair loss, erythema multiforme rash, thrombocytopenic purpura Musculoskeletal and Connective Tissue Disorders: arthralgia, muscle cramps, rhabdomyolysis, trismus Investigations: weight loss (adult ADHD patients) Vascular Disorders: peripheral coldness, Raynaud phenomenon Additional Adverse Reactions Reported with Other Methylphenidate-Containing Products The list below shows adverse reactions not listed with RITALIN® and dexmethylphenidate hydrochloride tablets formulations that have been reported with other methylphenidate products based on clinical trials data and post-marketing spontaneous reports.

Blood and Lymphatic Disorders: pancytopenia Immune System Disorders: hypersensitivity reactions, such as auricular swelling Psychiatric Disorders: affect lability, mania, disorientation, libido changes Nervous System Disorders: migraine, motor and verbal tics Eye Disorders: diplopia, increased intraocular pressure, mydriasis Cardiac Disorders: sudden cardiac death, myocardial infarction, bradycardia, extrasystole, supraventricular tachycardia, ventricular extrasystole Respiratory, Thoracic, and Mediastinal Disorders: pharyngolaryngeal pain, dyspnea Gastrointestinal Disorders: diarrhea, constipation Skin and Subcutaneous Tissue Disorders: angioneurotic edema, erythema, fixed drug eruption Musculoskeletal, Connective Tissue, and Bone Disorders: myalgia, muscle twitching Renal and Urinary Disorders: hematuria Reproductive System and Breast Disorders: gynecomastia General Disorders: fatigue Urogenital Disorders: priapism