Supaveda · Ingredient Spotlight
Ashwagandha
Withania somnifera (L.) Dunal
Also known as: Indian Ginseng · Winter Cherry · Asgandh · Ashvagandha
Ashwagandha (Withania somnifera) is one of Ayurveda's most celebrated herbs — a powerful Rasayana used for over 3,000 years to build strength, resilience, and vitality. Now one of the world's most clinically studied adaptogenic herbs, it sits at a remarkable intersection of ancient wisdom and modern science.
A small, woody shrub native to India, North Africa, and the Mediterranean, W. somnifera takes its Sanskrit name from the words for "horse" (ashwa) and "smell" (gandha) — a reference both to its distinctive root aroma and to the horse-like strength it was traditionally believed to confer. 1 The root is the primary medicinal part and the source of its key bioactive compounds, the withanolides.
At a Glance — Key Evidence-Backed Benefits
Traditional Ayurvedic Uses
Ashwagandha is classified as a Rasayana in Ayurveda — a rejuvenative tonic that promotes longevity, strength, and vitality. The Charaka Samhita and Sushruta Samhita both cite Ashvagandha as a premier herb for building bala (strength) and ojas (vital essence), the subtle energy underlying immunity and vitality. It is classified in the Balya group (strength-promoting herbs) and the Vajikaran group (aphrodisiac herbs). 1
Ayurvedic Properties (Guna)
Conditions Traditionally Treated
- Debility, emaciation, and fatigue — used as a general restorative tonic
- Nervous exhaustion, anxiety, and insomnia (nidranasha)
- Rheumatic conditions, joint inflammation, and muscle weakness
- Male reproductive health — low libido, infertility, and erectile dysfunction (Vajikaran use)
- Female reproductive health — menstrual irregularities and postnatal recovery
- Thyroid imbalance and metabolic sluggishness
- Skin diseases and wound healing (topical application of root paste)
- Longevity and anti-ageing as a general Rasayana tonic
How It Was Traditionally Administered
The most classical preparation is Ashwagandha Churna — the dried root ground to a fine powder — taken with warm milk, ghee, and honey, often with a pinch of black pepper to aid absorption. This combination is called Ashwagandha Ksheerapaka (milk decoction) and remains a common preparation today. The root was also formulated into medicated ghee (Ashwagandhadi Ghrita) for neurological use, and into a herbal wine (Ashwagandharishta), a classical fermented tonic traditionally prescribed for debility and reproductive health. Topically, the root paste or powder was applied to wounds, skin conditions, and inflamed joints.
Key Active Compounds
The pharmacological activity of Ashwagandha is primarily attributed to its withanolides — a group of steroidal lactones unique to the Withania genus — alongside alkaloids, saponins, and iron. 1 Over 35 withanolides have been identified, with withaferin A and withanolide D being the most extensively studied. 9
Primary Bioactive Constituents
What the Research Says
Ashwagandha is among the most clinically investigated herbs in the Ayurvedic pharmacopoeia, with a growing number of randomised controlled trials (RCTs) in human subjects. The evidence is strongest for stress reduction and cortisol lowering; evidence for muscle performance, cognitive function, and sleep is promising but from smaller studies. 23
A prospective, randomised, double-blind, placebo-controlled study published in the Indian Journal of Psychological Medicine found that 300 mg twice daily of a high-concentration full-spectrum Ashwagandha root extract produced a statistically significant reduction in anxiety scores (PSS) and serum cortisol compared to placebo, over 60 days. 2 A further double-blind RCT confirmed significant reductions in stress and body weight in chronically stressed adults treated with Ashwagandha, with no adverse effects reported. 3 The proposed primary mechanism is modulation of the hypothalamic-pituitary-adrenal (HPA) axis — the body's core stress-response pathway — alongside inhibition of stress-activated protein kinases (JNK-1) and reduction of heat shock proteins. 1
An 8-week double-blind, placebo-controlled study published in the Journal of Dietary Supplements found that Ashwagandha root extract (300 mg twice daily) significantly improved immediate and general memory, executive function, attention, and information processing speed in adults with mild cognitive impairment. 4 A separate study in healthy young adults demonstrated improvements in reaction time and psychomotor performance following standardised aqueous Ashwagandha extract. 5 Preclinically, withanolide A has been shown to promote neuritic regeneration — growth of axons and dendrites — and reverse β-amyloid-induced neurodegeneration in models relevant to Alzheimer's disease. 1
A randomised, double-blind, placebo-controlled trial published in the Journal of the International Society of Sports Nutrition administered 300 mg of Ashwagandha root extract twice daily to healthy men engaged in resistance training over 8 weeks. The treatment group showed significantly greater improvements in muscle strength (bench press and leg extension), muscle recovery, and testosterone levels compared to placebo, alongside a significantly greater reduction in exercise-induced muscle damage as measured by serum creatine kinase. 6 These findings are consistent with Ashwagandha's classical use as a Balya herb, and suggest utility as a natural adjunct for strength training and athletic recovery.
A double-blind, randomised, placebo-controlled crossover trial published in Cureus (2019) found that Ashwagandha root extract (300 mg twice daily for 10 weeks) significantly improved sleep quality, sleep onset latency, total sleep time, and morning alertness in adults with insomnia, with no adverse effects. 10 The sedative properties of the plant are reflected in its Latin species name — somnifera, meaning "sleep-inducing" — and are attributed to the alkaloid withasomnine, as well as to its cortisol-lowering effects, which facilitate natural sleep onset.
Animal and in vitro studies have consistently demonstrated anti-inflammatory effects of Ashwagandha and its withanolide constituents, primarily through suppression of NF-κB signalling — a master regulator of the inflammatory response — and reduction of pro-inflammatory cytokines including TNF-α, IL-1β, and IL-6. 7 A clinical study in rheumatoid arthritis patients found that Ashwagandha root supplementation significantly reduced markers of inflammation compared to baseline. 8 Withaferin A has also been shown to inhibit cyclooxygenase (COX) enzymes, a mechanism shared by conventional anti-inflammatory drugs. 1
A peer-reviewed study in Fertility and Sterility investigated Ashwagandha supplementation in infertile men and found significant improvements in sperm count, sperm motility, and semen volume compared to baseline, alongside reductions in seminal plasma reactive oxygen species and increases in serum testosterone and LH levels. 11 These findings corroborate the classical Vajikaran (aphrodisiac/virilising) use of Ashwagandha in Ayurveda and support its application in male reproductive support formulas.
A study published in the Journal of Alternative and Complementary Medicine found that Ashwagandha root extract (600 mg/day for 8 weeks) significantly improved serum TSH and T4 levels in patients with subclinical hypothyroidism, suggesting thyroid-stimulating potential. 12 The herb's adaptogenic properties — its ability to modulate endocrine function bidirectionally — may explain this effect, though patients with diagnosed thyroid conditions should seek professional guidance before use.
Traditional Use & Modern Dosage
Ashwagandha can be taken in multiple forms. The classical preparation with warm milk remains a highly effective and bioavailable method; standardised extract capsules offer convenience and measurable withanolide content. For general wellness, lower doses over longer periods are traditional; therapeutic use may employ higher doses for defined cycles.
| Form | Traditional Preparation | Typical Dose (Adult) |
|---|---|---|
| Powder (Churna) | Mixed with warm milk, ghee & honey — the classical Ksheerapaka method | 3–6 g/day in 1–2 doses |
| Capsules / Tablets | Standardised root extract (typically 2.5–5% withanolides) or whole root powder | 300–600 mg twice daily (standardised); follow product guidance |
| Decoction (Kwath) | Root simmered in water or milk, strained; used especially in Ksheerapaka | 20–40 ml twice daily |
| Medicated Ghee (Ghrita) | Root cooked into ghee; classical preparation for neurological & reproductive use | 1–2 tsp daily in warm milk |
| Herbal Wine (Ashwagandharishta) | Classical self-fermented tonic; prescribed for debility & reproductive health | 15–30 ml twice daily with equal water |
| Topical Paste | Root powder made into paste with water or oil; applied to joints or skin | Apply 1–2× daily to affected area |
Ashwagandha is traditionally taken in 4–8 week cycles, particularly when used for stress and strength. For general wellness and immune support, longer-term lower-dose use is also established in Ayurvedic tradition. It is most often taken at night when used specifically for sleep, and in the morning for energy and cognitive support.
Supaveda Products with Ashwagandha
We've incorporated Ashwagandha into a range of carefully formulated Ayurvedic products, each designed around a specific wellness goal:
Our certified organic Ashwagandha root powder for use the traditional way: mixed with warm milk, smoothies, or golden milk blends. Full-spectrum root with no fillers or additives.
An organic blend of Ashwagandha, Gokshura, and Kapikachu — chosen by Ayurvedic experts to support stress reduction, muscle strength, mood, testosterone, and male reproductive health.
An organic blend of Guduchi, Amla, Ashwagandha, and Shatavari — a synergistic formula of four Ayurvedic immune tonics including Amla with 20× the Vitamin C of an orange.
An organic blend of Ashwagandha, Bala, and Shatavari — an Ayurvedic trio for physical strength, stamina, and antioxidant protection. Ideal for active lifestyles and recovery support.
Our organic, vegan take on the 3,000-year-old Chyawanprash formula — 16 Ayurvedic herbs including Ashwagandha in a base of jaggery and coconut oil. A traditional daily immunity and vitality elixir.
A handcrafted Ayurvedic soap blending the adaptogenic root of Ashwagandha with the purifying properties of Holy Basil (Tulsi) — for grounded, nourished, and cleansed skin.
Safety & Precautions
Ashwagandha has a well-established safety profile when used at recommended doses, supported by multiple clinical trials reporting no serious adverse events. A dedicated 6-month safety study found it to be well tolerated at doses up to 1,000 mg/day. 13 The following precautions apply:
Please note
- Thyroid conditions: Ashwagandha may increase thyroid hormone levels — those on thyroid medication should monitor carefully and consult a healthcare provider 12
- Pregnancy: traditionally contraindicated in pregnancy at therapeutic doses due to potential uterine-stimulating effects — use only under professional guidance
- Autoimmune conditions: Ashwagandha may stimulate the immune system — caution is advised in conditions such as lupus, rheumatoid arthritis (in active flares), and multiple sclerosis
- Sedative medications: mild sedative and CNS-depressant activity has been demonstrated — caution with concurrent sedative medication or anaesthesia
- Mild gastrointestinal upset has been reported at higher doses in some individuals — taking with food or warm milk reduces this
- Rare reports of liver injury have emerged; these were largely associated with proprietary concentrated extracts at high doses — stick to recommended doses and quality-assured products
Key Takeaways
Evidence-backed bullet points:
Used in Ayurveda for over 3,000 years as a Rasayana — a herb that builds strength, immunity, and longevity
Double-blind RCT: Ashwagandha significantly reduces cortisol and anxiety scores in chronically stressed adults
RCT in resistance-trained men: greater improvements in muscle strength, recovery, and testosterone vs. placebo
Improves memory, attention & information processing speed in adults with mild cognitive impairment — RCT evidence
Clinical trial: significantly improves sleep onset, total sleep time & morning alertness — its Latin name means "sleep-inducing"
Anti-inflammatory via NF-κB suppression — the same pathway targeted by many pharmaceutical anti-inflammatories
Contains 35+ withanolides — steroidal lactones unique to Withania with adaptogenic, anti-tumour & neuroprotective activity
Supports thyroid function — shown to increase T4 levels in subclinical hypothyroidism in a clinical study
Improves sperm count, motility & testosterone in infertile men — peer-reviewed study in Fertility and Sterility
Well-tolerated safety profile across multiple RCTs — no serious adverse effects reported at standard doses
References
- Singh, N., Bhalla, M., de Jager, P. and Gilca, M. (2011) 'An overview on ashwagandha: a Rasayana (rejuvenator) of Ayurveda', African Journal of Traditional, Complementary and Alternative Medicines, 8(5S), pp.208–213. doi: 10.4314/ajtcam.v8i5S.9. PMC3252722.
- Chandrasekhar, K., Kapoor, J. and Anishetty, S. (2012) 'A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults', Indian Journal of Psychological Medicine, 34(3), pp.255–262. doi: 10.4103/0253-7176.106022. PMID: 23439798.
- Choudhary, D., Bhattacharyya, S. and Joshi, K. (2016) 'Body weight management in adults under chronic stress through treatment with ashwagandha root extract: a double-blind, randomized, placebo-controlled trial', Journal of Evidence-Based Complementary & Alternative Medicine, 21(4), pp.228–234. doi: 10.1177/2156587215623366. PMID: 26609282.
- Choudhary, D., Bhattacharyya, S. and Bose, S. (2017) 'Efficacy and safety of ashwagandha (Withania somnifera (L.) Dunal) root extract in improving memory and cognitive functions', Journal of Dietary Supplements, 14(6), pp.599–612. doi: 10.1080/19390211.2017.1284970. PMID: 28471731.
- Pingali, U., Pilli, R. and Fatima, N. (2014) 'Effect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participants', Pharmacognosy Research, 6(1), pp.12–18. doi: 10.4103/0974-8490.122912. PMC3897003.
- Wankhede, S., Langade, D., Joshi, K., Sinha, S.R. and Bhattacharyya, S. (2015) 'Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial', Journal of the International Society of Sports Nutrition, 12(1), p.43. doi: 10.1186/s12970-015-0104-9. PMC4658772.
- Bhattacharya, S.K., Bhattacharya, A., Sairam, K. and Ghosal, S. (2000) 'Anxiolytic-antidepressant activity of Withania somnifera glycowithanolides: an experimental study', Phytomedicine, 7(6), pp.463–469. doi: 10.1016/S0944-7113(00)80030-6. PMID: 11194174.
- Singh, R., Chandra, S. and Nair, V. (2015) 'Evaluation of anti-inflammatory potential of Withania somnifera root in rheumatoid arthritis patients', International Journal of Health Sciences and Research, 5(10), pp.15–22.
- Mirjalili, M.H., Moyano, E., Bonfill, M., Cusido, R.M. and Palazón, J. (2009) 'Steroidal lactones from Withania somnifera, an ancient plant for novel medicine', Molecules, 14(7), pp.2373–2393. doi: 10.3390/molecules14072373. PMC6254205.
- Langade, D., Kanchi, S., Salve, J., Debnath, K. and Ambegaokar, D. (2019) 'Efficacy and safety of ashwagandha (Withania somnifera) root extract in insomnia and anxiety: a double-blind, randomized, placebo-controlled study', Cureus, 11(9), e5797. doi: 10.7759/cureus.5797. PMC6827862.
- Ahmad, M.K., Mahdi, A.A., Shukla, K.K., Islam, N., Jaiswar, S.P., Ahmad, S. and Shankhwar, S.N. (2010) 'Withania somnifera improves semen quality by regulating reproductive hormone levels and oxidative stress in seminal plasma of infertile males', Fertility and Sterility, 94(3), pp.989–996. doi: 10.1016/j.fertnstert.2009.04.046. PMID: 19501822.
- Sharma, A.K., Basu, I. and Singh, S. (2018) 'Efficacy and safety of ashwagandha root extract in subclinical hypothyroid patients: a double-blind, randomized placebo-controlled trial', Journal of Alternative and Complementary Medicine, 24(3), pp.243–248. doi: 10.1089/acm.2017.0183. PMID: 28829155.
- Raut, A.A., Rege, N.N., Tadvi, F.M., Solanki, P.V., Kene, K.R., Shirolkar, S.G., Pandey, S.N., Vaidya, R.A. and Vaidya, A.B. (2012) 'Exploratory study to evaluate tolerability, safety, and activity of ashwagandha (Withania somnifera) in healthy volunteers', Journal of Ayurveda and Integrative Medicine, 3(3), pp.111–114. doi: 10.4103/0975-9476.100168. PMC3487234.