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.
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).
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.

Constipation; decreased appetite; diarrhea; dizziness; dry mouth; headache; increased sweating ; mild irritability, nervousness, or restlessness; nausea; trouble sleeping; unpleasant taste; upper stomach pain; vomiting; weight loss.
Seek medical attention right away if any of these SEVERE side effects occur when using
Vyvanse:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; blurred vision or other vision changes; change in sexual ability or desire; chest pain; fainting; fast or irregular heartbeat; fever; hallucinations; new or worsening mental or mood changes; seizures; severe or persistent headache; severe or persistent irritability, nervousness, or restlessness; shortness of breath; tremor; uncontrolled speech or muscle movements (eg, tics); unusual weakness or tiredness.