Bedtime herbs explained
Is ashwagandha good for sleep?
Updated October 5, 2026 · Answer by Noddie Night
Ashwagandha (Withania somnifera) may help some people sleep, but the evidence is still developing. The National Center for Complementary and Integrative Health (NCCIH) says some ashwagandha preparations may be effective for insomnia and stress, while its effect on anxiety is unclear. It is traditionally used in Ayurveda for stress, so any sleep benefit may come from feeling calmer.
NCCIH says ashwagandha appears safe for short-term use, up to 3 months, but there is not enough data on long-term safety. Reported side effects include drowsiness, stomach upset, diarrhea and vomiting, and rare cases of liver damage have been linked to it.
Results are hard to compare, because ashwagandha products differ in how they are made and how concentrated they are. A study of one extract does not necessarily describe another product.
Ashwagandha has real cautions: it should be avoided in pregnancy and while nursing, and it can interact with several medicines, including sedatives. Talk to your doctor before using it if you take medication or have a medical condition.
Source: NCCIH - Ashwagandha
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