Ashwagandha for Sleep: What the Human Trials ShowAshwagandha for sleep: what the trials found, the doses and timing they used, how it compares with melatonin and magnesium, and who should skip it.

Does ashwagandha help you sleep?

Probably a little, for some people, after weeks rather than on the first night. It is not a sleeping pill.

The best summary is a 2021 meta-analysis of five randomised, placebo-controlled trials with 400 adults. Ashwagandha extract had a small but significant effect on overall sleep, which the authors rated as moderate-quality evidence. The effect was clearer in adults diagnosed with insomnia, at 600 mg a day or more, and in trials of eight weeks or longer. No serious side effects were reported, but the authors say safety data are too limited to judge long-term use. The review was unfunded and its authors declared no competing interests (Cheah et al., 2021).

Two caveats run through everything below. The trials tested specific extracts, mostly one branded root extract (KSM-66), so results don't automatically carry over to other ashwagandha products. And the placebo groups improved too, which is common in sleep studies: in one trial, time to fall asleep shortened on both ashwagandha and placebo, just more on ashwagandha (Langade et al., 2019).

Ashwagandha sleep trials, one by one

These are the randomised human sleep trials we found in a PubMed search on 8 October 2026, plus one Ayurvedic trial of plain root powder. "Maker tie" means the extract's manufacturer supplied or funded it; that doesn't make a result wrong, but you should know it.

Sources: Langade 2019; Langade 2021; Deshpande 2020; Salve 2019; Kelgane 2020; Movva 2026; Atul 2020.

How to read the pattern

• Small and local. Each trial had 50 to 200 people, and all seven were run in India.
• One extract dominates. Five of the seven used KSM-66, and in every KSM-66 trial whose full text we could open, the extract came from its maker.
• One research group. D. Langade and J. Salve each co-authored four of these seven trials. Independent replication would make the evidence stronger.
• Churna is barely tested. The only plain root powder trial we found had no placebo group and was open-label, so it can't tell you whether the powder itself helped.

What the meta-analyses say

Three newer reviews broadly agree with Cheah 2021: a real but modest signal, built on small and varied trials.

• Anxiety and insomnia, 2024. Pooling five trials (254 people with anxiety, insomnia or both), ashwagandha improved time to fall asleep, total sleep time, sleep efficiency and sleep-quality scores, but not time awake during the night or time in bed. The authors call for larger trials. The abstract carries no funding or conflict statement (Fatima et al., 2024).
• Diagnosed mental-health conditions, 2025. Across 14 trials, mostly in anxiety disorders (median 600 mg a day for 8 weeks), sleep-quality scores improved more than with comparators. The authors say ashwagandha's role in insomnia still needs clarifying, and declared no conflicts (Marchi et al., 2025).
• Ayurvedic herbs, 2026. A review of 49 controlled studies found the most evidence for ashwagandha on stress and sleep, but limited confidence in how big the effect is, because of heterogeneity, small-study effects and patchy reporting (Baune et al., 2026).

We found no Cochrane review of ashwagandha (PubMed search, 8 October 2026). Our read: ashwagandha has the most consistent sleep data of the popular Ayurvedic herbs, at a moderate level of certainty, and the stress angle may be part of how it helps. For that side, read ashwagandha for stress and cortisol, and for the wider picture, ashwagandha benefits.

Weeks, not a night.

When to take ashwagandha for sleep

No trial has compared morning with night dosing for sleep; a PubMed search on 8 October 2026 found none. Most sleep trials split the dose: twice a day with milk or water (Langade et al., 2019), twice a day with water (Kelgane et al., 2020), or after breakfast and after dinner (Movva et al., 2026). One trial used a single daily dose (Deshpande et al., 2020).

What matters more is consistency over weeks. In the 2026 trial, time to fall asleep had dropped by week four and dropped further by week eight (Movva et al., 2026). In the 2021 meta-analysis, effects were larger in trials of eight weeks or more (Cheah et al., 2021).

Our practical suggestion, not a trial finding: pick a time you'll stick to, and give it six to eight weeks before judging. Drowsiness is a listed side effect (NCCIH), so if it makes you sleepy, take it in the evening, and don't combine it with sedatives. For dose ranges and the extract-versus-churna question, see our ashwagandha dosage guide.

Ashwagandha vs melatonin vs magnesium

Melatonin has the most trials, magnesium has one modest recent trial, and ashwagandha sits in between but takes weeks. They work in different ways, and only one trial has tested any two of them head to head. Choosing between magnesium and ashwagandha? We compare them in ashwagandha vs magnesium glycinate.

Melatonin. In 19 trials of people with primary sleep disorders, melatonin shortened the time to fall asleep by about 7 minutes and added about 8 minutes of sleep: modest, but the benefit didn't fade with continued use. One author's work was partly funded by a drug company's research awards (Ferracioli-Oda et al., 2013). The American Academy of Sleep Medicine suggests clinicians not use melatonin for chronic insomnia, a weak recommendation; ashwagandha isn't among the agents it rates (Sateia et al., 2017). More in is melatonin safe every night?

Head to head. The only direct comparison we found randomised 200 adults with sleep disturbance to ashwagandha root extract, melatonin 3 mg, both, or placebo for eight weeks. By week eight, time to fall asleep fell by 14.6 minutes on ashwagandha, 16.4 on melatonin, 20.9 on both and 7.2 on placebo. The authors describe ashwagandha and melatonin alone as comparable, with the combination best. It's one trial, from the same research group as most KSM-66 sleep trials (Movva et al., 2026).

Magnesium. In 155 adults reporting poor sleep, 250 mg a day of elemental magnesium as bisglycinate, taken 30-60 minutes before bed, lowered insomnia scores slightly more than placebo over four weeks (3.9 vs 2.3 points; a small effect). One author runs a contract research firm funded by nutraceutical companies (Schuster et al., 2025). We found no trial comparing ashwagandha with magnesium directly (PubMed search, 8 October 2026). For more, see magnesium for sleep, magnesium vs melatonin, and our ranking of the best sleep supplements in India.

A wind-down drink, not a sleeping pill

SILT™ Nights is a bedtime drink that includes ashwagandha among four actives. It's built for the wind-down routine, not as a replacement for one.

Each 8.6 g stick has 300 mg KSM-66® ashwagandha root extract, 1.8 g magnesium bisglycinate (250 mg elemental magnesium), 3 g glycine and 200 mg L-theanine; every dose is printed on the back of the pack. The pack's free-from line reads no added sugar, no maltodextrin and no melatonin, and there's no caffeine; Chamomile Lemon is the flavour. Directions on the pack: 1 stick per day, not to exceed the recommended usage level, stirred into 200-250 ml of lukewarm or cold water; do not use boiling water, because heat degrades sensitive actives. The window we recommend is 30 to 60 minutes before bed. The pack also says "For best results, use consistently for at least 3 months." Read that as advice about consistency, not a promised result: the trials above ran from 30 days to 12 weeks, and NCCIH's short-term window is about 3 months.

The honest limits: the trials above tested ashwagandha on its own, in capsules. That KSM-66 has been studied doesn't mean a drink combining it with three other actives reproduces any trial result, and we don't claim it does. Everything in the safety panel above applies to Nights too: if you have a liver or thyroid condition, are pregnant, or take regular medicines, check with your doctor first; the pack adds that it is not for medicinal use and not intended to treat, cure or prevent any disease. Every ingredient comes with a supplier certificate of analysis (the KSM-66 certificate lists the plant part as roots and shows 5.3% withanolides against a minimum of 5%; the glycine certificate shows 99.4% purity to a USP pharma-grade standard), listed on our science page; a finished-product NABL lab report is pending, and we'll publish it when it's ready. More on the extract on our ashwagandha supplement page.

MRP ₹1,125 ₹900 · 15 sticks or ₹1,500 for 30 (MRP ₹2,250)

That's ₹60 a stick, or ₹50 in the 30-stick pack.

Slow help, not a knockout

Ashwagandha root extract has a small set of Indian, mostly maker-supplied trials showing a modest improvement in sleep, clearer in people with insomnia and after eight weeks or more. It isn't for everyone: skip it if you're pregnant or breastfeeding, have liver, thyroid or autoimmune disease, or take sedatives. Habits come first; our guide to how to sleep fast covers them. If you want to try ashwagandha, our ashwagandha supplement page explains what to look for. Evidence, not hype.