Are you referring to methylphenidate?
Methylphenidate is the generic name for the drug Ritalin. It is a stimulant that is used to treat Attention-deficit Hyperactivity Disorder (ADHD)
See also: http://en.wikipedia.org/wiki/Methylphenidate
Methylphenidate is a generic for Ritalin which is used for Attention Deficit Disorder, mainly in children of school age. -Christina, Doctor of Pharmacy
Yes, notice the beginning of the word starts with "METH?"
Yes it takes at least a week or two to clear.