Ritalin (Methylphenidate)
Ritalin is a dopamine & norepinephrine reuptake inhibitor approved for ADHD, with strong evidence for improving attention, focus, impulse control, & academic performance in individuals with ADHD.
Evidence last reviewed: 05 Apr 2026
Not a routine supplement — not recommended for self-directed use.
Information here is educational only, not a recommendation to use. See our Safety page.
Evidence is from research or clinical settings — does not imply safety outside supervised contexts.
The evidence supports Ritalin's effectiveness in improving attention and cognitive performance in adults with ADHD, with moderate to high certainty. However, there are concerns about growth suppression in children and potential adverse fetal outcomes during pregnancy, indicating the need for careful consideration in specific populations.
Attention & cognitive performanceAdults with ADHD · Systematic reviewHigh
Methylphenidate was found to improve attention & cognitive performance in adults with ADHD.
Growth in children & adolescentsChildren and adolescents with ADHD · Systematic reviewLow
Long-term methylphenidate exposure was associated with growth suppression in children & adolescents with ADHD.
Clinical response in ADHDAdults with ADHD · Systematic reviewModerate
Methylphenidate improved clinical response compared to placebo in adults with ADHD.
Adverse fetal outcomesPregnant women taking methylphenidate · Systematic reviewVery low
Methylphenidate use during pregnancy was associated with possible adverse fetal outcomes.
Safety & adverse eventsGeneral population using stimulants · Meta-analysisLow
The safety profile of stimulants, including methylphenidate, showed a low certainty of evidence for adverse events.