What are the side effects of vyvanse (lisdexamfetamine)?

Most common side : effects are headache, stomach-ache, , agitation & insomnia, especially the 1st few days. It can increase pre-existing anxiety & tics.Increases of blood pressure & heart rate are usually mild, but must be monitored. Decreased appetite the 1st 3-4 mos. usually abates after that; rarely a problem after a yr. Low starting doses are titrated to optimal effect if no intolerable side effects.

Methylphenidate: nervousness, insomnia, nausea/vomiting, loss of appetite, diarrhea, heartburn, headache, muscle tightness, dry mouth, restlessness, tingling of hands/feet, decrease sexual desire, painful menstruation, chest pain, shortness of breath, heart beats faster, blurred vision, agitation, seizures, psychosis, mood changes, tics, rash.