The short answer
Ashwagandha may add to lemborexant-related drowsiness and next-day impairment. Review co-use before adding it, especially when the supplement is being used as another sleep aid.
What this answer covers
Withania somnifera products; root-only and root/leaf extracts are not equivalent.
- Supplement or preparation
- Withania somnifera
- Medication ingredient
- lemborexant
Why alertness matters
Lemborexant can impair alertness and next-day activities. Its label warns about additive effects with other central nervous system depressants. That precaution does not provide an adverse-event rate for this supplement combination.
What is known about this product
Supplement-specific evidence describes drowsiness or cautions about sedative co-use. The inspected sources do not establish the risk or benefit of this exact combination.
Keep the evidence within its limits
Products differ in dose, composition and release. A study that fails to show better sleep does not prove that a product cannot impair alertness. Evidence about one extract does not establish the effects of every preparation.
Plan co-use with the prescriber
Discuss the exact product and other sleep medicines before adding it. A short spacing interval has not been shown to prevent additive impairment. Do not drive while impaired. If sleepwalking, sleep-driving or other activities while not fully awake occur, stop lemborexant and contact the prescriber promptly, as its label instructs.
Evidence and practical considerations
Side effects & toxicity
Conditional additive-sedation and co-use review precaution from exact medication labeling and supplement evidence. No measured pair incidence or protective timing interval; no claim of a universal botanical contraindication.
- Exact scope
- Withania somnifera products; root-only and root/leaf extracts are not equivalent. with Lemborexant2272403 IN, oral DAYVIGO tablets.
- Medication form and route
- oral medication; oral supplement
What remains uncertain
- No unmeasured pair incidence, blanket class transfer or arbitrary spacing interval.
Factors that may matter: Preparation; Dose; Other medicines; Organ function.
Read the supporting source summaries
Source 1: current product label
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: People prescribed lemborexant
Avoid strong/moderate CYP3A inhibitors and inducers; St John’s wort explicitly named. Other insomnia medicines not recommended. Additive CNS depression and complex sleep behaviors.
How this applies: Exact lemborexant RxCUI 2272403 IN, with stated salt/formulation/route bridge.
No measured seed-extract, CBD, kava or generic valerian combination risk.
Source 2: federal supplement guidance
nccih.nih.gov · Source check Sep 10, 2026
Population: Ashwagandha users
Drowsiness possible; potential interactions with sedatives; preparation and long-term safety limitations.
How this applies: Original source interpreted for lemborexant only within the stated preparation and endpoint limits.
Federal consumer guidance describes possible drowsiness and sedative interactions; does not establish exact lemborexant co-use or equivalence of root and root/leaf extracts.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Research summary published | |
| Article prepared | |
| Prepared exact lemborexant article with formulation-specific evidence and uncertainty. |
Article revision: 0e47fd987709f9a4
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.