Ashwagandha Quick Guide: Uses, Tradition, Research & Safety
At a glance
- Common name: Ashwagandha
- Botanical name: Withania somnifera
- Family: Solanaceae — the nightshade family
- Plant part commonly used: Root; some preparations also use leaf
- Plant type: Shrub or subshrub
- Native range: Broadly distributed from parts of southern Europe and Africa through western and southern Asia
- Other names: Indian ginseng, winter cherry
Ashwagandha is a small shrub in the same botanical family as tomatoes, peppers and eggplants. The plant produces small greenish flowers and red-orange berries, but the root is the part most closely associated with traditional Ayurvedic preparations. Kew recognizes Withania somnifera as an accepted species with a wide native range.
Cultivation & commerce
Ashwagandha tolerates relatively dry growing conditions and is cultivated commercially, particularly in India, for the botanical and supplement trades.
After harvest, the roots are generally cleaned, dried and milled into powder or processed into extracts. Modern products vary substantially in preparation: whole-root powder, root extract and root-and-leaf extracts should not automatically be considered equivalent.
What does it taste like?
Ashwagandha root is:
- earthy
- bitter
- slightly woody
- somewhat pungent
It is usually easier to use as part of a blend than as a strong standalone flavor.
Culinary & everyday uses
Traditional and contemporary preparations include:
- stirred into warm milk or plant milk
- blended with spices such as cinnamon, cardamom or ginger
- mixed into smoothies
- incorporated into honey
- used in botanical tea blends
- taken as powdered root or capsules
Try it: Cardamom Date Ashwagandha Milk
History, tradition & lore
Ashwagandha has a long history in Ayurveda, where it belongs to a broad tradition of restorative preparations often described as rasayana.
Its Sanskrit name is commonly associated with the smell or strength of a horse. That traditional imagery should be understood as cultural history rather than evidence of a specific physiological effect.
Traditional uses
Historically, Ayurvedic practice has used ashwagandha in preparations associated with:
- vitality
- resilience
- sleep
- stress
- strength
- reproductive health
- recovery and general wellbeing
Traditional use does not by itself establish that a preparation prevents or treats a medical condition.
What modern research has studied
Supported by some human evidence
Stress and sleep:
Human clinical studies suggest that some ashwagandha preparations may help with perceived stress and insomnia. NCCIH considers these among the better-supported areas of ashwagandha research, although formulations and doses differ between studies.
Promising, but not established
Researchers have also studied ashwagandha for:
- anxiety
- male reproductive parameters
- testosterone
- exercise performance
- cognition
- metabolic measures
There is limited evidence that certain preparations may affect testosterone and sperm quality, but evidence for most other promoted uses remains insufficient.
Traditional or anecdotal
Claims that ashwagandha broadly “balances hormones,” “boosts immunity,” reverses adrenal problems or treats chronic diseases go beyond what current human evidence establishes.
Safety & cautions
Ashwagandha may cause:
- stomach upset
- diarrhea
- nausea
- vomiting
- drowsiness
NCCIH advises against its use during pregnancy and breastfeeding and notes potential concerns for people with thyroid or autoimmune disorders, people preparing for surgery, and people taking certain diabetes, blood-pressure, sedative, anticonvulsant, immunosuppressive or thyroid medications. Rare cases of clinically apparent liver injury have also been reported.