Ashwagandha for Sleep Onset Difficulty
BBased on 6 studies (3 RCTs) with 454 total participants. 6/6 studies show positive effects.
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B
The Bottom Line
Research suggests ashwagandha may help you fall asleep faster, with multiple well-designed clinical trials consistently showing reduced time to fall asleep.
- All 6 studies show positive effects, including 3 RCTs with 454 total participants
- A 2024 meta-analysis confirmed benefits for sleep onset
- Active compound triethylene glycol from ashwagandha leaves has been identified as a sleep-inducing agent
- Benefits observed in both healthy adults and people diagnosed with insomnia
Key Study Findings
systematic review and meta-analysis
n=254
Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis.
Dose: varies across included RCTs
vs: Placebo
Effect: HAM-A MD = -5.96 (95% CI -10.34, -1.59); significant improvements in SOL, TST, PSQI, SE; no signific
0.008 (HAM-A)
animal_study
Hydroalcoholic Extract of Ashwagandha Improves Sleep by Modulating GABA/Histamine Receptors and EEG Slow-Wave Pattern in …
Dose: 10, 25, or 50 mg/kg body weight ashwagandha extract (AE, 35% withanolide glycosides, Shoden)
vs: Placebo
Effect: At 50 mg/kg: 34% decrease in sleep onset time (p<0.0001); 47% increase in sleep duration (p<0.0001);
<0.0001
Randomized Controlled Trial
n=80
8 weeks
Double-blind
Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers …
Dose: None
vs: Placebo
Effect: None
SOL p=0.013; HAM-A p<0.05; men
RCT
n=60
4 weeks
Open-label
Efficacy of Brimhana Nasya and Ashwagandha (Withania somnifera (L.) Dunal) root powder in primary insomnia …
Dose: None
vs: Placebo
Effect: None
p<0.0001
Randomized Controlled Trial
n=60
10 weeks
Double-blind
Efficacy and Safety of Ashwagandha (Withania somnifera) Root Extract in Insomnia and Anxiety: A Double-blind, …
Dose: 300 mg twice daily
vs: Placebo
Effect: SOL: 29.00 vs 33.94 min (placebo) at 10 weeks; SE: 83.48 vs 79.68
p=0.019 (SOL); p=0.002 (sleep
In Vitro
Triethylene glycol, an active component of Ashwagandha (Withania somnifera) leaves, is responsible for sleep induction.
Dose: 10-30 mg/mouse (triethylene glycol); water extract of Ashwagandha leaves
vs: Placebo
Effect: Significant increase in NREM sleep in a dose-dependent manner
None
Key Statistics
6
Studies
454
Participants
↑
Positive
B
Grade
Referenced Papers
Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis.
Meta-Analysis
Human psychopharmacology
2024
9 citations
Preventive nutrition and …
2022
18 citations
Journal of ethnopharmacology
2021
58 citations
Ayu
2020
5 citations
Cureus
2019
101 citations
PloS one
2017
57 citations
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Commonly Used Dosages
- sleep:
- 300-600 mg KSM-66 or Sensoril, before bed
Upper limit: Not established; studied up to 1,200 mg/day
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| varies across included RCTs | -- | Positive | 254 |
| 10, 25, or 50 mg/kg body weight ashwagandha extract (AE, 35% withanolide glycosides, Shoden) | -- | Positive | -- |
| None | 8 weeks | Positive | 80 |
| None | 4 weeks | Positive | 60 |
| 300 mg twice daily | 10 weeks | Positive | 60 |
| 10-30 mg/mouse (triethylene glycol); water extract of Ashwagandha leaves | -- | Positive | -- |
Best taken: 1-2 hours before bed
Safety & Side Effects
Reported Side Effects
- ⚠ Drowsiness
- ⚠ GI upset
- ⚠ Diarrhea
- ⚠ Headache
Known Interactions
- ● Thyroid medications — ashwagandha may increase thyroid hormone levels
- ● Immunosuppressants — ashwagandha may stimulate immune activity
- ● Sedatives — potential additive drowsiness
- ● Blood sugar medications — may lower blood glucose
Tolerable upper intake: Not established; studied up to 1,200 mg/day
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does Ashwagandha help with Sleep Onset Difficulty?
Based on 6 studies with 454 participants, there is moderate evidence from clinical studies that Ashwagandha may support Sleep Onset Difficulty management. Our evidence grade is B (Good Evidence).
How much Ashwagandha should I take for Sleep Onset Difficulty?
Studies have used various dosages. A commonly studied range is 300-600 mg KSM-66 or Sensoril, before bed. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Ashwagandha?
Reported side effects may include Drowsiness, GI upset, Diarrhea, Headache. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Ashwagandha and Sleep Onset Difficulty?
We rate the evidence as Grade B (Good Evidence). This rating is based on 6 peer-reviewed studies with 454 total participants. The overall direction of effect is positive.
Related Evidence
Other ingredients for Sleep Onset Difficulty
Ashwagandha for other conditions
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.