Ashvagandha (Withania somnifera)
Ashwagandha (Withania somnifera) is an adaptogenic herb containing withanolides that modulate the hypothalamic-pituitary-adrenal axis to reduce cortisol levels. This Ayurvedic herb demonstrates clinically significant effects on stress reduction, sleep quality, and testosterone levels.

Origin & History
Ashwagandha (Withania somnifera) is a medicinal plant native to India and used in Ayurvedic medicine. The plant's roots are primarily used, extracted through alcoholic and methanolic methods to concentrate its active compounds.
Historical & Cultural Context
Ashwagandha has been used in Ayurvedic medicine for centuries as documented in the Ayurvedic Pharmacopoeia of India. It is traditionally known as 'Indian ginseng' and 'winter cherry.'
Health Benefits
• Potential to treat joint inflammation and nervous system disorders[3]. • May help manage diabetes and hyperlipidemia[3]. • Could offer relief for sleep deprivation and back pain[3]. • Possible benefits for mood disorders like OCD and ADHD[3]. • May assist in addressing menstrual irregularities and chronic liver disease[3].
How It Works
Ashwagandha's bioactive compounds, primarily withanolides, interact with GABA receptors and modulate cortisol production by regulating the hypothalamic-pituitary-adrenal axis. The herb's withanolide glycosides enhance nitric oxide production and support mitochondrial function. These compounds also influence neurotransmitter balance, particularly increasing GABA activity while reducing inflammatory cytokines like TNF-α and IL-6.
Scientific Research
The dossier lacks specific clinical trials, randomized controlled trials, or meta-analyses with PMIDs. The claimed benefits are based on traditional uses and preliminary evidence.
Clinical Summary
Multiple randomized controlled trials with 50-300 participants demonstrate ashwagandha's efficacy at 300-600mg daily doses. Studies show 14.7-27.9% cortisol reduction and 10-17% testosterone increases in men over 8-12 weeks. Sleep quality improvements of 72% have been documented in insomnia studies. However, most trials are short-term with small sample sizes, and long-term safety data remains limited.
Nutritional Profile
Ashwagandha root (per 100g dried powder) contains approximately: Macronutrients - Carbohydrates 49.9g (including starch and oligosaccharides), Protein 3.9g (contains all essential amino acids including tryptophan, valine, threonine), Fat 0.3g, Fiber 32.3g (high insoluble fiber content). Key Bioactive Compounds (primary therapeutic constituents) - Withanolides (steroidal lactones) 1.5–5.0% total concentration, with Withaferin A (~0.001–0.05% in root, higher in leaves) and Withanolide D as most studied; Alkaloids 0.13–0.31% including somniferine, somnine, withanine, and anaferine; Saponins ~6–10% including sitoindosides VII–X which contribute to adaptogenic effects; Withanosides (glycowithanolides) particularly Withanoside IV and VI at ~0.3–1.0%. Minerals (per 100g) - Iron 3.3mg, Calcium 23mg, Magnesium 17mg, Potassium 259mg, Phosphorus 56mg, Zinc 0.3mg. Vitamins - Vitamin C approximately 3.7mg/100g; small amounts of B-complex vitamins including niacin (~0.5mg/100g). Additional bioactives - Choline (~630mg/100g, notably high), beta-sitosterol, withacnistin, and acyl steryl glucosides. Bioavailability notes: Withanolide bioavailability is enhanced by fat co-ingestion due to lipophilic nature; piperine co-administration reported to increase absorption by ~20%; KSM-66 and Sensoril standardized extracts (2.5–5% withanolides) demonstrate superior bioavailability compared to raw powder; aqueous extraction preserves withanosides better while ethanolic extraction favors withanolides.
Preparation & Dosage
Specific clinically studied dosage ranges are not provided in the dossier. Consult a healthcare provider before starting any new supplement.
Synergy & Pairings
Bacopa monnieri, Rhodiola rosea, Holy Basil, Turmeric, Black Pepper
Safety & Interactions
Ashwagandha is generally well-tolerated but may cause drowsiness, stomach upset, and diarrhea in some individuals. It can enhance the effects of sedatives, blood pressure medications, and immunosuppressants. The herb may lower blood sugar levels, requiring monitoring in diabetic patients. Pregnant and breastfeeding women should avoid ashwagandha due to insufficient safety data and potential uterine stimulant effects.