Does Ashwagandha Make You Sleepy? What the Research Shows
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Does Ashwagandha Make You Sleepy?

Woman yawning as she sits on the side of the bed in her pajamas.

Summary: Sleep is one of the most important foundations of good health, yet according to the CDC, nearly one in three American adults isn’t getting the recommended seven hours each night. Poor sleep is linked to higher risks of heart disease, obesity, diabetes, weakened immunity, and cognitive decline. Beyond physical health, it also impacts mood, productivity, and overall quality of life. Learn more about the importance of sleep in this article. Because sleep has such a profound impact on health, many people look for safe, natural ways to improve their rest.

About 14% of U.S. adults have trouble falling asleep. For those looking for a non-prescription drug to help fall asleep, the question may be, does ashwagandha make you sleepy? Research suggests this adaptogenic herb, long used in Ayurvedic medicine, may reduce stress† and improve sleep quality†. Let’s explore more about ashwagandha in this article.

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What Is Ashwagandha?

Ashwagandha (Withania somnifera) is a small evergreen shrub native to India, the Middle East, and parts of Africa. It has been used for centuries in Ayurvedic medicine to promote balance and resilience in the body†. The name itself, “somnifera,” is derived from Latin, meaning “sleep-inducing,” which suggests that ashwagandha may make you sleepy. Classified as an adaptogen, ashwagandha is thought to help the body manage stress and restore equilibrium†.

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Its active compounds, called withanolides, have been studied for their effects on stress hormones, inflammation, and nervous system activity, all of which may impact sleep†. So, when people ask, “Does ashwagandha make you sleepy?”, it depends on how it interacts with the stress and relaxation pathways.

Many sleep problems are tied to chronic stress. When the body is under stress, it produces more cortisol, the primary “stress hormone.” Elevated cortisol can interfere with the body’s natural circadian rhythm, making it harder to fall asleep or stay asleep.

High cortisol levels at night are especially disruptive, as they signal the brain and body to remain alert. Because ashwagandha may help regulate cortisol†, researchers have studied its role in easing stress and supporting better sleep†.

How Ashwagandha May Support Better Sleep†

Ashwagandha appears to promote sleep in several ways:

  • Cortisol regulation: By helping to lower evening cortisol levels, ashwagandha may make it easier for the body to wind down†.
  • Stress and anxiety relief: Reduced anxiety can ease racing thoughts† that keep many people awake.
  • GABA-like activity: Some research suggests ashwagandha may influence neurotransmitters like GABA† (gamma-aminobutyric acid), which play a role in calming the nervous system.
  • Improved overall resilience: Better daytime stress management may lead to improved nighttime rest†.

These effects don’t act like a sedative but instead promote an easier transition to rest. So, does ashwagandha make you sleepy right away? Not usually, but indirectly, it may help the body relax enough to fall asleep more easily.

What the Research Says About Ashwagandha and Sleep

Several clinical studies have examined ashwagandha’s effects on sleep:

A 2020 clinical trial on insomnia seemed to answer the question “Does ashwagandha make you sleepy?” with a resounding yes.  A randomized, double-blind, placebo-controlled trial found that adults with insomnia who took 300 mg of ashwagandha extract twice daily experienced significant improvements in both sleep onset and sleep efficiency† compared to placebo.

A meta-analysis of clinical studies concluded that ashwagandha supplementation improved sleep quality† and reduced stress† in most participants, particularly those with insomnia or high stress levels.

Does Ashwagandha Work Like Other Natural Sleep Aids?

Many people compare ashwagandha to other sleep supplements, asking, “Does ashwagandha make you sleepy, like melatonin or valerian root?”  It’s often compared to other natural sleep aids, each of which works in different ways. The table below highlights key differences:

Comparison to Other Sleep Supplements
Supplement How it Works Best Use Considerations
Ashwagandha Regulates cortisol and stress response; may influence GABA receptors† Occasional sleeplessness related to stress; difficulty winding down† Works gradually; not an instant sedative
Melatonin Resets circadian rhythm (internal clock)† Jet lag, shift work, occasional trouble falling or staying asleep† May cause grogginess; may cause vivid dreams
Magnesium Supports muscle relaxation and nervous system balance† Trouble relaxing physically† Some forms, such as oxide, can cause digestive upset
Valerian Root Traditionally used for relaxation, the mechanism is not fully clear Occasional sleeplessness† Research results are mixed
GABA A brain chemical that promotes relaxation and sleep Supports calmness† Limited evidence that supplements cross into the brain effectively
Kava Calms anxiety; may ease stress-related insomnia† Anxiety-driven sleep issues† Linked to the risk of liver toxicity in some cases

Compared to these options, does ashwagandha make you sleepy? The answer depends on timing, dosage, and individual response. For some individuals, combining ashwagandha with other sleep supplements, such as magnesium, may be more effective than using either one alone.

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Who Might Benefit Most from Ashwagandha for Sleep?

Ashwagandha may be especially helpful for:

  • People with high stress levels who find it hard to “switch off” at night.
  • Individuals with occasional insomnia related to anxiety or restlessness.
  • Adults seeking a natural approach to relaxation and sleep support†.

For sleep issues caused by conditions like sleep apnea, restless legs syndrome, or other medical disorders, seek guidance from your healthcare provider.

Possible Side Effects

Ashwagandha is generally well-tolerated, but some people may experience:

  • Drowsiness or excessive sleepiness
  • Digestive upset
  • Headaches

It may also interact with medications, especially sedatives, thyroid medication, blood pressure drugs, and blood sugar medications. Always check with your healthcare provider before use.

How to Use Ashwagandha for Sleep

Clinical studies on ashwagandha and sleep often use 300–600 mg of standardized root extract daily. For sleep support, many trials provided doses in the evening or twice daily (morning + evening). As with any supplement, it’s best to:

  • Start with the lowest effective dose
  • Give it several weeks to evaluate results
  • Use alongside healthy sleep habits

Healthy Sleep Habits

If you’re considering Ashwagandha, it works best when paired with healthy sleep habits. Here are evidence-based strategies that can help you feel sleepy and prepare for rest:

  • Set a consistent bedtime: Going to bed and waking up at the same time each day helps regulate your circadian rhythm.
  • Dim the lights in the evening: Reducing exposure to bright or blue light signals to your brain that it’s time to wind down.
  • Create a relaxing bedtime routine: Activities like gentle stretching, a warm bath or deep breathing exercises can cue your body for rest.
  • Keep your bedroom cool and dark: A sleep-friendly environment supports melatonin production, making it easier to drift off. (See this article about sleep hygiene and habits for better Zzzs.)
  • Limit caffeine and alcohol late in the day: Both can interfere with deep, restorative sleep.

Pairing these lifestyle adjustments with ashwagandha may enhance its calming effects† and improve overall sleep quality†.

Key Takeaways

  • Ashwagandha is not a sedative, so if you’re wondering, does ashwagandha make you sleepy instantly, the answer is no.
  • Instead, it supports sleep by lowering stress†, balancing cortisol†, and promoting relaxation†.
  • Multiple clinical studies have shown that it can help reduce the time it takes to fall asleep† and improve sleep quality†, especially in individuals with stress or insomnia.
  • The best results are achieved when used consistently and combined with healthy sleep practices.

If you’re considering ashwagandha for broader health benefits beyond sleep, see our guide on the best time to take ashwagandha. As a reminder, your physician understands your health profile best, so it’s important to talk to them about which supplements are best for you.

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About the Author: Cathy Sides is the Director of Customer Relations for Cooper Complete® nutritional supplements. Since joining Cooper Aerobics in 2007, she has helped customers make informed decisions about supplements. Cathy also contributes blog content focused on vitamins, supplements, and healthy living.

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