Taking ashwagandha daily for three months probably helps adults with sleep problems feel less bothered by insomnia, especially at the higher dose of 600 mg.
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 insomnia severity across diverse populations and doses, quantifying the average effect on ISI scores.
A systematic review and meta-analysis of RCTs evaluating ashwagandha (250–600 mg/day) for insomnia severity in adults with clinical or subclinical insomnia, using ISI as the 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 insomnia severity compared to placebo, with sufficient power to detect dose differences.
A double-blind, placebo-controlled RCT with 200+ adults meeting DSM-5 insomnia criteria, randomized to 250 mg ashwagandha, 600 mg ashwagandha, or placebo for 90 days, with ISI as primary outcome and sleep diaries and actigraphy as secondary measures.
A prospective cohort would assess whether ashwagandha use predicts sustained reductions in insomnia severity over time in real-world settings, adjusting for confounders.
A 12-month prospective cohort of 500 adults with moderate insomnia (ISI 15–21), tracking ashwagandha use (dose, duration), ISI scores monthly, and covariates (stress, medication, sleep hygiene), with multivariable regression analysis.
A cross-sectional survey could identify associations between ashwagandha use and lower ISI scores in a general population, but cannot determine directionality.
A national survey of 10,000 adults measuring current ashwagandha use (dose, duration), ISI scores, and demographic/lifestyle factors to assess cross-sectional associations.
A case series could document patterns of ISI improvement in individuals using ashwagandha, but cannot rule out placebo or natural variation.
A case series of 20–30 adults with moderate insomnia (ISI 15–21) who self-administered ashwagandha (250–600 mg/day) for 90+ days, documenting monthly ISI scores and subjective changes.