How do you get ritalin (methylphenidate)?

Controlled substance: This is a class 2 controlled substance that is monitored by state and federal officials from the point of manufacture to consumption. If you have a condition where this is used, your physician must document how the diagnosis was made, and provide a prescription on special forms. In my state the quantity prescribed at one time is limited and all refills require a separate written prescription.

Ritalin (methylphenidate): By prescription.