The most common side effects are restlessness or tremor; anxiety or nervousness; headache or dizziness; insomnia; dryness of the mouth or an unpleasant taste in the mouth; diarrhea or constipation; or mpotence or changes in sex drive.
In the clinical studies with patients using CONCERTA®, the most common side effects were headache, stomach pain, sleeplessness, and decreased appetite. Other side effects seen with methylphenidate, the active ingredient in CONCERTA®, include nausea, vomiting, dizziness, nervousness, tics, allergic reactions, increased blood pressure and psychosis (abnormal thinking or hallucinations).
Nervousness and insomnia are the most common adverse reactions but are usually controlled by reducing dosage and omitting the drug in the afternoon or evening.
Other reactions include hypersensitivity (including skin rash, urticaria, fever, arthralgia, exfoliative dermatitis, erythema multiforme with histopathological findings of necrotizing vasculitis, and thrombocytopenic purpura); anorexia; nausea; dizziness; palpitations; headache; dyskinesia; drowsiness; blood pressure and pulse changes, both up and down; tachycardia; angina; cardiac arrhythmia; abdominal pain; weight loss during prolonged therapy.
Allergic reactions: skin rash, hives, drug fever joint pains possible. Headache, dizziness rapid and forceful heart palpitation-infrequent.
Upset stomach, decreased appetite, nausea or vomiting, dizziness, tiredness, decrease in appetite, some weight loss, and mood swings were the most common side effects.
In rare cases, Strattera can cause allergic reactions, such as swelling or hives, which can be serious. Your child should stop taking Strattera. Call your doctor or healthcare professional if your child develops any of these symptoms.