By Katlyne Brutus, MSN, FNP-C, PMHNP-BC | Clearview Behavioral Health and Wellness Services There is no FDA-approved over-the-counter ADHD medication in the United States. Every medication proven to treat ADHD, stimulant or nonstimulant, requires a prescription. The most effective ones (methylphenidate and amphetamine products such as Ritalin and Adderall) are Schedule II controlled substances, and