Ritalin, Concerta, Metadate, Methylin, and Rubifen, an amphetamine-like prescription stimulant, are commonly used to treat ADHD in children and adults.
Side Effects: Insomnia, nervousness, drowsiness, dizziness, headache, blurred vision, tics, abdominal pain, nausea, vomiting, decreased appetite, weight loss, irregular or fast heartbeat, confusion, and liver damage (characterized by yellowing of the skin or eyes, nausea, abdominal pain or discomfort, unusual bleeding or bruising, and severe fatigue).
Overdose Symptoms: Agitation, anxiety, tremors, muscle twitches, seizures, confusion, hallucinations, sweating, headache, fast or irregular heartbeat, large pupils, and dryness of the mouth and eyes.
Abuse and Dependency: Ritalin has potential for abuse and for physical and psychological dependence, especially among people who do not have ADHD. Continued Ritalin use will result in higher tolerance to the drug and eventually require larger doses to reap the same effects. Once discontinued, withdrawal effects such as depression may occur.