Best Supplements for Reduced Reaction Time
Ranked by research evidence. Compare 6 supplements across 8 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence3 studies
Across 3 studies, 2 reported beneficial effects of L-theanine on reducing reaction time, with effect sizes ranging from small to large; 1 study found no significant difference versus placebo. The most-studied dose was 200 mg, often in sleep-deprived young adults. Effects were observed both acutely and over 84 days, though the evidence base is small.
Dose: 200 mg (single dose)
6 supplements
- LowL-TheanineAcross 3 studies, 2 reported beneficial effects of L-theanine on reducing reaction time, with effect sizes ranging from small to large; 1 study found no significant difference versus placebo. The most-studied dose was 200 mg, often in sleep-deprived young adults. Effects were observed both acutely and over 84 days, though the evidence base is small. · Dose: 200 mg (single dose)2 beneficial1 neutral3 studies