Ashwagandha (Withania somnifera) has been a cornerstone of Ayurvedic medicine for over three millennia. Often called "Indian ginseng," it's classified as a Rasayana — a rejuvenative herb that promotes longevity and vitality. But what does the modern evidence actually say?
What the research says
Over the past two decades, Ashwagandha has become one of the most studied adaptogenic herbs in clinical literature. A 2021 systematic review published in the Journal of Ethnopharmacology analysed 12 randomised controlled trials and concluded that Ashwagandha root extract significantly reduces cortisol levels and perceived stress compared to placebo.
- Cortisol reduction: Significant decrease (−22% to −30%) after 8 weeks of 600mg daily supplementation
- Sleep quality: 72% of participants reported improved sleep onset and duration
- Muscle strength: 10–15% improvement in upper and lower body strength in resistance-trained men
- Safety profile: Well-tolerated with no serious adverse events reported in trials up to 12 weeks
The root's primary bioactive compounds — withanolides, particularly Withaferin A and Withanolide D — are responsible for most of its pharmacological effects. These steroidal lactones modulate the hypothalamic-pituitary-adrenal (HPA) axis, which is your body's central stress-response system.
Ashwagandha doesn't eliminate stress — it trains your body to respond to it with more grace, the way a seasoned yogi handles a difficult pose.— Dr Vidya Sharma, Divyaveda R&D
The withanolides that matter
Not all Ashwagandha products are created equal. The concentration and standardisation of withanolides varies dramatically between products. At Divyaveda, our formulations use a full-spectrum root extract standardised to 5% withanolides — the same concentration used in the most compelling clinical trials.
Here's why that matters: a product labelled "Ashwagandha 500mg" could contain anywhere from 1% to 10% withanolides. That's the difference between 5mg and 50mg of active compound — a tenfold variance that most labels don't make clear.
| Metric | Baseline | After 60 days | Change |
|---|---|---|---|
| Serum cortisol (μg/dL) | 21.6 | 15.2 | −29.6% |
| Perceived stress (PSS-10) | 28.4 | 16.9 | −40.5% |
| Sleep quality (PSQI) | 9.8 | 6.1 | +37.7% |
| C-reactive protein (mg/L) | 3.2 | 2.1 | −34.4% |
Four key ingredients in our formulation
Our Ashwagandha capsules don't rely on the root alone. Drawing from classical Rasayana texts, we pair it with synergistic herbs that amplify its adaptogenic effect:
Ashwagandha root
KSM-66® full-spectrum extract, standardised to 5% withanolides. The anchor of the formula.
Brahmi leaf
Enhances cognitive clarity and complements Ashwagandha's anxiolytic action without sedation.
Black pepper extract
Piperine increases the bioavailability of withanolides by up to 30%, ensuring maximum absorption.
Organic ghee
A traditional Ayurvedic carrier that improves fat-soluble compound delivery across the gut wall.
When and how to take it
Timing matters. Ashwagandha's cortisol-modulating effects are most pronounced when taken consistently. Here's the protocol we recommend based on clinical dosing:
300 mg (1 capsule)
Take with warm water or milk after your first meal. This primes the HPA axis for the day ahead and supports sustained energy without stimulation.
300 mg (1 capsule)
The evening dose supports healthy sleep architecture and overnight cortisol clearance. Pair with warm milk and a pinch of nutmeg for deeper rest.
Review and adjust
Most people notice improved sleep within 7–10 days and reduced stress reactivity by week 3–4. If you're training intensely, your practitioner may suggest increasing to 450mg per dose.
2-week break
Following Ayurvedic tradition, we recommend cycling: 10–12 weeks on, 2 weeks off. This prevents receptor desensitisation and maintains efficacy long-term.
Who should avoid it?
While Ashwagandha has an excellent safety profile in healthy adults, it's not for everyone. Please consult your physician before starting supplementation if you:
- Are pregnant or breastfeeding
- Have hyperthyroidism or are on thyroid medication (Ashwagandha may increase T3/T4 levels)
- Are on immunosuppressive therapy
- Have an autoimmune condition such as lupus or rheumatoid arthritis
- Are scheduled for surgery within 2 weeks (may interact with anaesthesia)
This article is for educational purposes and reflects the current body of evidence. It is not medical advice. Always consult a qualified Ayurvedic practitioner or physician before beginning any new supplement regimen.
Try our Ashwagandha Gold capsules
KSM-66® root extract · 600mg daily dose · 60 capsules · Third-party tested
Shop Ashwagandha Gold — ₹699