When to Take Ashwagandha: Morning or Night for Stress, Sleep and Training

Look up the best time to take ashwagandha and you'll find confident advice pointing both ways. Take it in the morning for calm focus. Take it at night for sleep. Take it on an empty stomach, or never on an empty stomach. Most of that advice comes from supplement sellers, and very little of it comes from the studies.

That matters if you're already stretched thin. You bought it because work, sleep or training has been wearing you down, and you don't need another routine you're unsure you're doing right. A supplement that seems to do nothing after two weeks feels like one more thing that didn't work, and it's easy to blame yourself for that.

The good news is that timing is the smaller question. Ashwagandha builds up over weeks, so the decision that matters most is a time you'll actually keep. Below you'll find the time of day the trials used, how to match it to stress, sleep or training, whether to take it with food, how much the studies gave, how long it takes to work, whether to cycle it, and the safety warnings worth reading before your first capsule.

When Is the Best Time to Take Ashwagandha?

The best time to take ashwagandha is with a meal, at a time you can repeat daily. If your goal is daytime stress, take it with breakfast or split it between breakfast and dinner. If your goal is sleep, take it with or after your evening meal. If it's training and recovery, any fixed time works, because it isn't a pre-workout. And if it makes you drowsy, move it to the evening.

None of these timings has been tested against another. They follow the schedules the trials used and the side effects people report, which is the best evidence there is.

What Time of Day Did the Ashwagandha Trials Use?

Most trials never treated time of day as something to test. They picked a schedule, kept it for 6 to 12 weeks and measured stress, cortisol or sleep. Their methods still tell you which schedules have results behind them.

• Twice a day after food. Chandrasekhar and colleagues (2012) gave 64 adults with chronic stress one 300 mg capsule of root extract twice a day after food, with water, for 60 days. Serum cortisol fell 27.9% in the ashwagandha group against 7.9% with placebo, and stress scores dropped on every scale they used.
• Two doses compared. Salve and colleagues (2019) gave 60 stressed adults 125 mg or 300 mg twice a day after food, with milk or water, for 8 weeks. Both doses, 250 mg and 600 mg a day, lowered stress scores and cortisol compared with placebo, and the higher dose did more.
• Once a day after dinner. Lopresti and colleagues (2019) gave 60 stressed adults 240 mg of a root and leaf extract once a day after dinner for 60 days. Anxiety scores fell more than with placebo, and morning cortisol dropped 23% while the placebo group's rose 0.5%.
• Twice a day for insomnia. Langade and colleagues (2019) gave 60 adults with insomnia 300 mg twice a day with milk or water for 10 weeks. Measured with a wrist sleep tracker, the ashwagandha group fell asleep in about 29 minutes against about 34 with placebo, and slept more efficiently.
• Once a day for unrefreshing sleep. Deshpande and colleagues (2020) gave 150 healthy adults who woke up unrefreshed 120 mg of a root and leaf extract once a day for 6 weeks. Self-rated sleep quality improved 72% against 29% with placebo.

Two schedules cover nearly all of this evidence: a capsule after a meal twice a day, or one capsule after dinner. We couldn't find a published trial that compared morning and evening doses head to head, so any claim that one time of day is proven better goes beyond the evidence.

The Lopresti result is the useful one for timing. People took their capsule after dinner, and their cortisol was lower when it was measured the next morning. That fits the idea that ashwagandha works through a steady daily build-up rather than a short peak after each dose.

Should I Take Ashwagandha in the Morning or at Night?

Match the timing to the reason you're taking it. Here's how each goal lines up with the evidence.

For Stress and Anxiety: Morning, or Split the Dose

Your body's cortisol level normally peaks in the morning and falls through the day, so a dose with breakfast lines up with the hours when stress tends to bite. Two of the three stress trials above split the dose after meals and the third gave it after dinner, and all three reported lower stress than placebo. A 2022 meta-analysis by Akhgarjand and colleagues pooled 12 trials with 1,002 adults and found ashwagandha reduced both stress and anxiety compared with placebo, with the stress benefit seen at 300 to 600 mg a day. The authors rated the certainty of that evidence as low, and the results varied widely from trial to trial.

In practice, take it with breakfast if your stress peaks during the workday. If one larger dose upsets your stomach, split it between breakfast and dinner. Regular exercise works on the same system: over about 12 weeks it tends to lower resting cortisol and your reaction to stress, as our post on cortisol and exercise explains.

For Sleep: In the Evening, With or After Dinner

The species name, somnifera, comes from the Latin for sleep-inducing, but the sleep evidence is about weeks of use, not a bedtime knockout. Cheah and colleagues (2021) pooled five randomized trials with 400 participants and found a small but significant improvement in overall sleep compared with placebo. The effect was larger at 600 mg a day or more, after at least 8 weeks, and in people with insomnia.

None of those sleep trials required a bedtime dose. Langade's insomnia trial used two capsules a day and Deshpande's used one. Taking it with dinner or in the evening still makes sense, because drowsiness is one of its known side effects, and you'd rather feel it at 10 p.m. than at 10 a.m. Don't expect it to work like a sleeping pill on the first night. If you're lying awake now, the methods in our guide on how to fall asleep faster start working sooner and rest on stronger evidence.

For Training and Recovery: Any Fixed Time

Ashwagandha isn't a stimulant, so there's no pre-workout window to hit. The best-known training trial, Wankhede and colleagues (2015), gave 300 mg twice a day for 8 weeks alongside a resistance training program. The results showed up as strength and recovery gains over the whole block, not as a better session on the day of a dose. Our review of ashwagandha and exercise performance research covers those trials and the 2026 meta-analysis in detail. For timing, pick a meal you never skip, and keep taking it on rest days too.

If It Makes You Sleepy or Upsets Your Stomach

The National Center for Complementary and Integrative Health (NCCIH) lists drowsiness, stomach upset, diarrhea and vomiting among the side effects some people get. If you feel foggy at work, move your dose to the evening. If your stomach complains, take it after a full meal or split it into two smaller doses. If either problem continues, stop and ask your doctor.

Should Ashwagandha Be Taken With Food?

Yes, for most people. The trials told participants to take their capsules after food, with water or milk, or after dinner. There's no evidence that an empty stomach makes ashwagandha work better, and stomach upset, loose stools and nausea are among the most common complaints in the safety review by the NIH Office of Dietary Supplements.

The milk habit comes from Ayurvedic tradition, where the root powder is often stirred into warm milk. Two of the trials allowed milk or water, so either is fine. What matters more is taking it at the same meal each day so you don't miss doses.

How Much Ashwagandha Did the Studies Use?

Most trials used 300 to 600 mg a day of a standardized root extract, a concentrated form that states its withanolide content, the group of plant compounds thought to drive its effects. In Salve's trial, 600 mg a day did more than 250 mg. In the sleep meta-analysis, trials at 600 mg a day showed bigger effects than trials below it. A 2022 taskforce from the World Federation of Societies of Biological Psychiatry and the Canadian Network for Mood and Anxiety Treatments (Sarris and colleagues) provisionally recommends 300 to 600 mg a day of root extract standardized to 5% withanolides for generalized anxiety disorder, and says more research is needed before a stronger recommendation.

Three practical points follow from that:

• Extract and powder aren't interchangeable. Whole root powder is far less concentrated, and its traditional doses are measured in grams rather than milligrams. Follow the label for the form you have, and don't convert one into the other yourself.
• More isn't better. The trials mostly stopped at 600 mg a day of extract, and one of the thyroid case reports in the safety section involved 1,950 mg a day.
• Simple products are easier to judge. A single-ingredient root extract that states its withanolide percentage and has been checked by an independent testing lab is closer to what the trials used than a blend with a long ingredient list.

How Long Does Ashwagandha Take to Work?

Expect weeks, not days. The trials measured results at 6 to 12 weeks, and the clearest ones needed most of that time to pull away from placebo.

• Stress: in Salve's trial, perceived stress scores in the ashwagandha and placebo groups were still close at week 4. By week 8, both ashwagandha groups were significantly lower.
• Sleep: in Langade's insomnia trial, the time it took to fall asleep improved in both groups by week 5, partly through the placebo effect, and the ashwagandha group only pulled clearly ahead by week 10. Deshpande's trial found better sleep quality at 6 weeks, and the meta-analysis found larger effects at 8 weeks or more.
• Training: the performance trials ran 8 to 12 weeks.

So give it 8 weeks of daily use before you decide whether it's working for you. Keep a short weekly note of how you slept and how stressed you felt, because small changes are easy to miss and easy to imagine. If you notice nothing after 8 weeks at a studied dose, it probably isn't worth continuing.

Should You Cycle Ashwagandha?

No trial has tested cycling, so there's no evidence-based on and off schedule. What we do know is how long people have been studied. The NCCIH says ashwagandha may be safe when taken for up to 3 months and that there isn't enough information to judge its long-term safety. Most trials lasted 6 to 12 weeks.

A cautious approach is to treat it as a block. Take it daily for 8 to 12 weeks, then stop and see whether your sleep or stress stays better without it. Restart only if the benefit fades, nothing in the safety section below applies to you, and your doctor agrees. This is a precaution based on how short the safety data is, not a schedule proven in a trial.

Why Be Careful With Ashwagandha? Who Should Skip It

In short trials, ashwagandha is usually well tolerated and its side effects are mild. The rare problems are serious enough that some people shouldn't take it at all, and two European food safety authorities have acted on those concerns.

Liver Injury

Liver injury from ashwagandha is rare, but it's documented. Björnsson and colleagues (2020) described five cases from Iceland and the US Drug-Induced Liver Injury Network. All five developed jaundice, with symptoms such as nausea, tiredness, itching and abdominal discomfort, 2 to 12 weeks after starting a supplement. None developed liver failure, and liver tests returned to normal within 1 to 5 months in the four who were followed up. A larger series from India by Philips and colleagues (2023) found 23 patients with liver injury linked to ashwagandha between 2019 and 2022, and reported on 8 who had taken single-ingredient products. Five of those 8 already had chronic liver disease, and the 3 who developed acute-on-chronic liver failure died.

Stop taking it and see a doctor if you notice yellowing of your skin or eyes, dark urine, pale stools, itching that won't go away, or pain in the upper right side of your belly. If you already have liver disease, don't take it.

Thyroid Hormones

Ashwagandha can raise thyroid hormone levels. In a trial by Sharma and colleagues (2018), 50 adults with subclinical hypothyroidism took 600 mg of root extract a day or a placebo for 8 weeks, and the ashwagandha group's TSH fell while their T3 and T4 rose. That's a problem if you already take thyroid hormone or have an overactive thyroid. The Office of Dietary Supplements also describes three case reports of thyrotoxicosis, an excess of thyroid hormone, in women taking ashwagandha, one of them at 1,950 mg a day. All three resolved after they stopped.

Pregnancy and Breastfeeding

The NCCIH says ashwagandha should be avoided during pregnancy and not used while breastfeeding. Some reports have suggested it could cause miscarriage. The American Herbal Pharmacopoeia, whose monograph is one source of that concern, has since said there's no evidence the root causes abortions. Nobody has shown it's safe in pregnancy either, so the cautious answer is not to take it.

Autoimmune Conditions

The NCCIH doesn't recommend ashwagandha for people with autoimmune or thyroid disorders, and it may interact with immunosuppressant medicines. If you have a condition such as rheumatoid arthritis, lupus, multiple sclerosis or Hashimoto's thyroiditis, talk to the doctor who treats it before you start.

Sedatives and Other Medicines

The NCCIH lists sedatives, anticonvulsants, thyroid hormone, immunosuppressants, and diabetes and blood pressure medicines among the drugs ashwagandha might interact with. Because drowsiness is one of its side effects, pairing it with sleeping pills or anti-anxiety medicines is the combination to raise with your doctor first. It isn't recommended if you have surgery coming up. And because it may raise testosterone, people with hormone-sensitive prostate cancer should avoid it.

Why Denmark Restricted Ashwagandha

In 2020, the Technical University of Denmark published a risk assessment that raised concerns about possible effects on thyroid and sex hormones and a possible risk of miscarriage. Denmark went on to ban ashwagandha in 2023, according to the Office of Dietary Supplements. In 2024, France's food safety agency, ANSES, advised against its use by pregnant and breastfeeding women and by people with endocrine disorders. Those decisions were precautions based on limited data rather than proof of harm at typical doses, but they point to the same groups this section lists.

The Bottom Line

Take ashwagandha at a meal you never skip: breakfast for daytime stress, dinner for sleep, and either one for training. Most trials used 300 to 600 mg of root extract a day, split after meals or taken once after dinner, and the effects took 6 to 12 weeks to show. Treat it as an 8 to 12 week trial run, and skip it if you're pregnant or breastfeeding, have liver, thyroid or autoimmune disease, or take sedatives or thyroid medicine without your doctor's approval.

One more thing the trials have in common: people took it every day for weeks, and the training studies paired it with a structured program. Consistency is the hard part for most people, whether it's a capsule or a workout. Our roundup of the best fitness apps for staying consistent compares the options built to keep you going past the first few weeks. FitCraft is one of them: a 3D AI coach demonstrates each exercise, says your name during the workout and keeps your streak going, with dumbbell, bodyweight, yoga and mobility workouts you can do at home. As one user, Katie, put it: "I've tried everything. This is the first time I've stuck with something past two weeks."