Withania somnifera, Indian ginseng, winter cherry · Evidence-based safety and harm-reduction overview.
| Also known as | Withania somnifera, Indian ginseng, winter cherry |
| Category | Nootropic |
| nightshade_family | Ashwagandha (Withania somnifera) is a member of the Solanaceae or nightshade family, which includes tomato, potato, and pepper |
| withanolide_diversity | Over 40 distinct withanolide compounds have been identified in ashwagandha, contributing to its bioactivity |
| US legal status | In the US, ashwagandha is sold as a lawful dietary supplement under DSHEA and is not an FDA-approved drug. Supplements are not pre-approved for safety or efficacy, and extract strength and quality vary between products. |
Ashwagandha is an adaptogenic herb central to Ayurvedic tradition, with root extracts standardized to compounds called withanolides. It is commonly taken for stress and sleep. The plant is a member of the nightshade family and is native to the Indian subcontinent and North Africa.
Ashwagandha's withanolides are believed to modulate stress-response systems, reduce inflammatory markers, and support neurotransmitter balance, particularly affecting the hypothalamic-pituitary-adrenal (HPA) axis and gamma-aminobutyric acid (GABA) signaling. Antioxidant and neuroprotective effects are also documented in laboratory work.
Ashwagandha has been used in Ayurvedic medicine for over 3000 years as a 'rasayana' (rejuvenative) herb, particularly for vitality and stress resilience. Modern clinical research expanded from the 1980s onward, with multiple branded, standardized extracts now used in international trials.
Research suggests ashwagandha may modestly reduce subjective stress and anxiety and improve some measures of sleep in short human trials. Evidence is limited and mixed, most trials are small and run only weeks, and longer-term safety data is sparse. Laboratory work supports antioxidant and anti-inflammatory mechanisms, though human-relevance studies remain limited.
Clinical trials typically employ root extracts standardized to withanolides, often 5 to 10 percent by weight. Daily doses in published studies range from 300 milligrams to several grams, with trial durations from 4 to 12 weeks or longer for some outcome measures.
This is general research/context information, not medical advice or a recommended protocol.
Ashwagandha is often combined with other Ayurvedic adaptogens such as rhodiola, bacopa, or brahmi in traditional formulas, though combination products generally lack rigorous human efficacy and safety evaluation.
If you are going to research a compound, verifying identity and purity is the single most protective step. Independent analytical testing and sterile-handling supplies reduce risk.
Compare testing optionsRare cases of liver injury have been reported in the literature. The risk appears uncommon, but stop use and seek medical care if you notice jaundice, dark urine, or unexplained abdominal pain.
We do not provide dosing advice. Appropriate use depends on the extract and your health, so consult a qualified clinician or pharmacist.
Ashwagandha may raise thyroid hormone levels and could interfere with thyroid treatment, so anyone with a thyroid condition should consult their clinician before use.
Ashwagandha is not recommended in pregnancy due to traditional reports of miscarriage risk and lack of adequate safety data; consult your obstetrician.
Both are standardized ashwagandha extracts used in research and offer characterized withanolide content, but they differ in extraction methods and standardization ratios; both are considered quality products.
Medical & legal disclaimer. This site is for informational and harm-reduction purposes only. It is not medical advice and is not a substitute for a licensed healthcare professional. The compounds discussed are largely not approved by the FDA for human use and many are sold strictly as research chemicals 'not for human consumption.' Nothing here is an endorsement to purchase, possess, or use any substance. Laws vary by jurisdiction. Always consult a qualified physician and follow the law where you live.
Some links on this page may be affiliate links. If you buy through them we may earn a commission at no extra cost to you. This never changes the safety information we publish.