Methylphenidate belongs to the group of medicines called Central Nervous System (CNS) stimulants used to treat attention-deficit hyperactivity disorder (ADHD). Ritalin increases attention and decreases restlessness, and is used as part of a larger treatment program to handle and treat ADHD in adults and children.
Be sure to tell your doctor of any allergies you have whether it is to medication or food, preservatives, or dyes. Also tell your doctor of any other medications you are taking, including vitamins and supplements, and any medical conditions you may have.
Avoid alcohol when taking this medicine.
It is very important that you take this medicine exactly as your doctor tells you to. Do not take more or less medicine than directed, and don’t stop taking Ritalin without discussing it with your doctor first.
If you miss a dose of this medicine, take it as soon as you remember, unless it is almost time for your next dose. Do NOT double doses.
Check with your doctor as soon as possible if any of the following side effects occur: fast heartbeat; increased blood pressure; chest pain; fever; joint pain; skin rash or hives; uncontrolled movements of the body; black, tarry stools; blood in urine or stools; blurred vision or other changes in vision; convulsions; muscle cramps; pinpoint red spots on skin; uncontrolled vocal outbursts and/or tics (uncontrolled and repeated body movements); unusual bleeding or bruising
Ritalin hydrochloride, methylphenidate hydrochloride USP, is a mild central nervous system (CNS) stimulant, available as tablets of 5, 10, and 20 mg for oral administration; Ritalin-SR is available as sustained-release tablets of 20 mg for oral administration. Methylphenidate hydrochloride is methyl a-phenyl-2-piperidineacetate hydrochloride, Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Inactive Ingredients. Ritalin tablets: D&C Yellow No. 10 (5-mg and 20-mg tablets), FD&C Green No. 3 (10-mg tablets), lactose, magnesium stearate, polyethylene glycol, starch (5-mg and 10-mg tablets), sucrose, talc, and tragacanth (20-mg tablets).
Ritalin has the following structural formula: