Concerta
- Full prescribing information from RxList.
- http://www.rxlist.com/cgi/generic3/methylphen.htm

Ritalin
- Full prescribing information from RxList.
- http://www.rxlist.com/cgi/generic/methphen.htm

DrugDigest: Methylphenidate ( Ritalin )
- Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available.
- http://www.drugdigest.org/DD/DVH/Uses/0,3915,439%7CMethylphenidate,00.html

Ritalin SR (Methylphenidate ER)
- Information from DrugDigest on extended-release forms of methylphenidate (including Concerta, Ritalin SR, Metadate ER, and Methylin ER), covering dosage, usage, side effects, and interactions.
- http://www.drugdigest.org/DD/DVH/Uses/0,3915,1041%7CRitalin%2BSr,00.html

Ritalin and Childhood Growth Retardation
- Nutrients depleted, U.S. brand names, approved uses, contraindications, warnings and precautions, adverse reactions, and overdose symptoms.
- http://www.healingwithnutrition.com/adisease/add-adhd/adddrugs.html#A1

Ritalin: Fast Facts
- Summarizes the basic effects of methylphenidate (Ritalin) on health and behavior.
- http://www.doitnow.org/pages/526.html