Taking ashwagandha daily for three months probably helps adults with sleep problems feel less sleepy during the day.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
A meta-analysis would determine whether ashwagandha consistently reduces daytime sleepiness across studies using ESS or similar measures, quantifying the average effect size.
A systematic review and meta-analysis of RCTs evaluating ashwagandha (250–600 mg/day) for daytime sleepiness in adults with sleep disturbances, using Epworth Sleepiness Scale as primary outcome, pooling data from studies with low risk of bias and sample sizes >50 per arm.
A larger RCT would confirm whether ashwagandha causes a clinically meaningful reduction in daytime sleepiness compared to placebo, with sufficient power to detect dose differences.
A double-blind, placebo-controlled RCT with 200+ adults reporting daytime sleepiness (ESS ≥10), randomized to 250 mg ashwagandha, 600 mg ashwagandha, or placebo for 90 days, with ESS as primary outcome and actigraphy-based wake after sleep onset as secondary.
A prospective cohort would assess whether ashwagandha use predicts sustained reductions in daytime sleepiness over time in real-world settings, adjusting for confounders.
A 12-month prospective cohort of 500 adults with daytime sleepiness (ESS ≥10), tracking ashwagandha use (dose, duration), ESS scores monthly, and covariates (sleep duration, caffeine, work schedule), with multivariable regression analysis.
A cross-sectional survey could identify associations between ashwagandha use and lower ESS scores in a general population, but cannot determine directionality.
A national survey of 10,000 adults measuring current ashwagandha use (dose, duration), ESS scores, and demographic/lifestyle factors to assess cross-sectional associations.
A case series could document patterns of ESS improvement in individuals using ashwagandha, but cannot rule out placebo or natural variation.
A case series of 20–30 adults with daytime sleepiness (ESS ≥10) who self-administered ashwagandha (250–600 mg/day) for 90+ days, documenting monthly ESS scores and subjective changes.