Is KSM-66 ashwagandha better than generic ashwagandha?

Yes, clinically speaking. KSM-66 is a patented full-spectrum root extract standardised to ≥5% withanolides with 24+ published RCTs. Generic ashwagandha powder typically contains 0.5–3% unstandardised withanolides with no clinical trial support. You cannot achieve the same cortisol reduction, strength improvement, or sleep quality improvement with generic powder at any dose that has been tested in humans.

What is the correct daily dose of ashwagandha?

For KSM-66: 300mg twice daily (600mg/day total) is the most commonly studied dose in RCTs on stress, strength, and sleep. Sensoril: 125–250mg twice daily (250–500mg/day) due to its higher withanolide concentration (10% vs KSM-66's 5%). Generic powder: no validated clinical dose exists because no high-quality RCTs have tested standardised doses of generic powder.

What is the difference between KSM-66 and Sensoril?

KSM-66 (Ixoreal Biomed, Hyderabad) is a full-spectrum root-only extract standardised to ≥5% withanolides. Sensoril (Natreon Inc.) uses both root and leaf, standardised to ≥10% withanolides and ≥32% oligosaccharides. KSM-66 has more RCTs (24+) than Sensoril (14+). At standard doses, both are clinically effective; Sensoril requires a lower absolute dose due to higher withanolide concentration.

Can ashwagandha cause liver damage?

There are rare case reports of idiosyncratic hepatotoxicity — liver injury in isolated individuals — associated with ashwagandha use. Estimated frequency is very low (fewer than 30 documented global cases from 2022–2024 surveillance). The mechanism is not understood; withaferin A may play a role at high doses. Risk appears higher with leaf-heavy or high-withanolide-concentrated extracts at supraphysiological doses. At standard RCT doses (300–600mg KSM-66/day), liver injury has not been observed in clinical trial populations. Discontinue immediately if jaundice, dark urine, or severe nausea develops.

Is ashwagandha safe during pregnancy?

No. Ashwagandha has traditional abortifacient use and withaferin A has demonstrated uterotonic activity in animal studies. It should not be used during pregnancy or when trying to conceive. This is a firm contraindication regardless of extract type or dose.

Does ashwagandha increase testosterone?

Modestly, in stress-suppressed males. Wankhede et al. (2015) found a 15–17% increase in serum testosterone in resistance-trained men on 300mg KSM-66 twice daily vs placebo over 8 weeks — with a stress-reduction pathway proposed as the mechanism (lower cortisol → less cortisol-mediated testosterone suppression). This is a secondary endpoint in a resistance training trial, not a primary testosterone study. The effect is real but modest and not equivalent to anabolic supplementation.

Which Indian ashwagandha brands are actually using KSM-66?

Brands confirmed to use licensed KSM-66 (verifiable via Ixoreal's licensee list): Carbamide Forte, Nutrabay Gold, MuscleBlaze (Ashwagandha KSM-66 SKU only), Wellbeing Nutrition, and most products with the KSM-66 logo on packaging. Brands selling generic ashwagandha extract without the KSM-66 logo: WOW Life Science, HealthKart HK Vitals Ashwagandha, Himalayan Organics (some SKUs claim KSM-66 but evidence is mixed), Patanjali Ashwagandha, Dabur, Baidyanath — all of which use churna or unstandardised extract.

Home/Compare/Ashwagandha India 2026

Independent · India-market · 110 products scored · May 2026

Best Ashwagandha in India 2026 — KSM-66 vs Sensoril vs Generic

Ashwagandha is India's most clinically-studied adaptogen — and its most misrepresented supplement category. KSM-66, made in Hyderabad, has 24+ RCTs. Generic ashwagandha powder has essentially none. Most Indian products use the latter. This page shows you exactly what separates them, what the clinical evidence actually supports, and which 110 products score at what level.

The core distinction every buyer must understand

KSM-66 (≥5% withanolides, 24+ RCTs) and Sensoril (≥10% withanolides, 14+ RCTs) are clinically validated extracts. Generic "ashwagandha extract" without a standardisation certificate, and churna (powder), are not. The clinical evidence for stress reduction, cortisol lowering, and strength improvement belongs to the patented extracts — it does not automatically transfer to any product with "Withania somnifera" on the label. Crucially: KSM-66 is manufactured by Ixoreal Biomed in Hyderabad. India makes the world's best ashwagandha. Most Indian supplement brands don't use it.

KSM-66: 24+ RCTs on stress, strength, sleep Cortisol reduction: confirmed at 300–600mg/day Hepatotoxicity: rare case reports — do not exceed dose Contraindicated: pregnancy, thyroid disorders FSSAI Schedule I (herb) + Schedule III (nutraceutical) Updated May 2026

What KSM-66 RCTs confirm

–27.9%

Cortisol reduction at 300mg KSM-66 twice daily vs placebo, 60 days

Chandrasekhar et al. (2012), Indian Journal of Psychological Medicine — 64 adults with chronic stress. Significant reductions in PSS-10 (Perceived Stress Scale), cortisol, and anxiety scores. The most-cited ashwagandha RCT. Note: this used KSM-66 specifically — not generic extract. RCT

What generic powder evidence looks like

High-quality RCTs on unstandardised ashwagandha churna or generic powder

Traditional churna preparations contain 0.3–1.5% withanolides — 3–10× lower than KSM-66. No peer-reviewed RCT has established a validated therapeutic dose for generic powder on cortisol, stress, strength, or sleep outcomes. The traditional Ayurvedic use is real; the clinical dose-response is not established. Observational only

How it works

The HPA axis and withanolide-mediated cortisol suppression

Ashwagandha's primary mechanism operates on the HPA (hypothalamic-pituitary-adrenal) axis — the central stress response system. Under chronic psychological or physical stress, the hypothalamus secretes CRH (corticotropin-releasing hormone), which signals the pituitary to release ACTH (adrenocorticotropic hormone), which in turn drives the adrenal cortex to produce cortisol. Sustained cortisol elevation suppresses immune function, disrupts sleep architecture, inhibits testosterone production, and impairs hippocampal neurogenesis. Tsigos & Chrousos, 2002, J Psychosom Res Mechanistic

Withanolides — the steroidal lactone compounds that define ashwagandha's pharmacological activity — modulate this axis at the hypothalamic level, reducing CRH output and dampening the cascade. The precise molecular target is not fully characterised, but cortisol reduction in humans at the doses used in RCTs is well-replicated: Chandrasekhar et al. (2012) reported 27.9% cortisol reduction; Choudhary et al. (2017) 22.2% at 240mg KSM-66. Both used validated cortisol assays on serum samples at standardised morning collection times. Chandrasekhar et al., 2012, IJPSYM RCT

Withaferin A: NF-κB inhibition and anti-inflammatory signalling

Withaferin A (WFA) — one of the most pharmacologically active withanolides — inhibits the NF-κB (nuclear factor kappa B) signalling pathway by binding directly to IKK-beta (IkappaB kinase), blocking phosphorylation of IκBα and preventing NF-κB nuclear translocation. NF-κB is the master regulator of pro-inflammatory cytokine production (TNF-α, IL-6, IL-1β). WFA's anti-inflammatory action has been confirmed in multiple in vitro and animal models. Kaileh et al., 2007, J Biol Chem In vitro only The clinical translation at standard ashwagandha doses is less clear; high-dose WFA (supraphysiological in vitro concentrations) is also associated with cytotoxicity, which underlies the hepatotoxicity concern.

Strength and recovery: the indirect anabolic pathway

Ashwagandha's effects on strength and muscle recovery are mediated largely through the cortisol-testosterone axis rather than a direct anabolic mechanism. Elevated cortisol promotes muscle protein catabolism and suppresses LH (luteinising hormone), thereby reducing testosterone production. By reducing cortisol, ashwagandha creates a hormonal environment more permissive for anabolism. Wankhede et al. (2015) found significant gains in bench press (20.6kg vs 9.8kg placebo) and leg extension strength, along with a 15.4% increase in testosterone, in resistance-trained males on 300mg KSM-66 twice daily over 8 weeks. Wankhede et al., 2015, JISSN RCT This was an industry-co-funded study — treat the effect sizes with appropriate scepticism.

Sleep quality: GABA-A and sleep architecture effects

Withanoside IV and related glycowithanolides appear to modulate GABA-A receptor function — the primary inhibitory neurotransmitter receptor that is also the target of benzodiazepines and Z-drugs. In mice, oral ashwagandha extract increased sleep duration and improved NREM sleep architecture. Kaushik et al., 2017, PLOS ONE Animal model In humans, Langade et al. (2019) confirmed significant improvement in sleep quality (PSQI score), sleep onset latency, and morning alertness at 300mg KSM-66 twice daily in adults with insomnia. Langade et al., 2019, Cureus RCT

KSM-66 vs Sensoril vs generic: the three tiers

Extract	Withanolides	Source	RCTs	Dose range	India price
KSM-66 (Ixoreal, Hyderabad)	≥5% guaranteed	Root only	24+	300–600mg/day	₹12–25/dose
Sensoril (Natreon Inc.)	≥10% + ≥32% oligosaccharides	Root + leaf	14+	125–250mg/day	₹18–35/dose
Generic extract	1–5% (unstandardised)	Varies	~0 qualified	Unknown	₹3–10/dose
Churna / powder	0.3–1.5% (unverified)	Root/leaf mixed	0	3–6g/day (traditional)	₹1–3/dose

Fig. 1 — HPA axis cortisol cascade and ashwagandha intervention points. Withanolide NF-κB pathway shown below.

India market context

Ashwagandha in India — an irony of scale

Hyderabad

Home of Ixoreal Biomed, the manufacturer of KSM-66 — the most clinically tested ashwagandha extract in the world. India makes the world's best ashwagandha. Most Indian supplement brands use inferior alternatives or generic powder.

MP / RJ

Madhya Pradesh and Rajasthan produce over 70% of India's raw ashwagandha root. The raw material is domestically abundant and inexpensive. The quality gap between generic churna and KSM-66 is not a supply issue — it is a processing and standardisation issue.

FSSAI

Withania somnifera is listed in FSSAI's Schedule I (permitted plants/herbs) and regulated as a nutraceutical under Schedule III when in standardised extract form. No FSSAI regulation specifies minimum withanolide content — any powder can be sold as "ashwagandha supplement."

~60%

Estimated proportion of Indian ashwagandha supplement sales that are generic powder or unstandardised extract — not KSM-66 or Sensoril. These products are sold with the same health claims (cortisol reduction, stress relief) that the clinical evidence established specifically for KSM-66.

₹8–25

Price per day of KSM-66 ashwagandha (600mg) on Amazon.in vs ₹1–4/day for churna. The premium for the clinically validated extract vs generic is approximately 4–6× per dose — a difference of ₹250–500 per month.

Avoid

Ashwagandha should not be used with thyroid medication (may increase T3/T4, dangerous with levothyroxine), immunosuppressants, or barbiturates. Contraindicated in pregnancy. Stop 2 weeks before surgery. FSSAI label warnings are often incomplete on this.

Label intelligence

What to look for — and what to walk away from

Good signals

K66

KSM-66 logo (Ixoreal Biomed licensed)

The KSM-66 trademark is licensed by Ixoreal Biomed. A product displaying the KSM-66 logo has purchased certified extract from Ixoreal — it is not a label claim a brand can fake without a licensing agreement. Verify the logo is present on the physical packaging, not just in marketing images. Standardised to ≥5% withanolides, full-spectrum root extract, manufactured in ISO and GMP certified facilities in Hyderabad.

Sns

Sensoril logo (Natreon licensed)

Sensoril is the licensed alternative — standardised to ≥10% withanolides and ≥32% oligosaccharides. Uses both root and leaf material. More concentrated than KSM-66, so the dose is lower (125–250mg/day). Has 14+ RCTs including stress, cognitive function, and endurance. Products with the Sensoril logo have paid for licensed extract from Natreon. Valid at lower doses than KSM-66.

Withanolide percentage disclosed on label

If a product discloses its withanolide percentage — e.g. "Withania somnifera extract standardised to 5% withanolides" — it is making a verifiable commitment. Without the KSM-66/Sensoril brand, this should be independently verified via NABL COA. Products that state withanolide % but lack a third-party verification are somewhat less reliable than branded extract, but significantly more trustworthy than no disclosure.

Root-only extract

All RCTs on stress, cortisol, strength, and sleep used root-only extracts (KSM-66) or predominantly root-based formulations. The leaf contains significantly higher withaferin A concentrations, which may contribute to hepatotoxicity at elevated doses. Products claiming to use "root and leaf" without the Sensoril brand have an uncharacterised withaferin A load — a risk flag.

Red flags

"Ashwagandha extract" with no standardisation or brand

This phrase covers everything from 1% to 5% withanolides with no verification. Unless the label specifies KSM-66, Sensoril, or a disclosed withanolide percentage with a COA, the product is making health claims backed by other extracts' clinical data. This is the most common form of evidence laundering in the Indian supplement market — using KSM-66 trial results to sell a generic extract.

Churna / powder products with clinical claims

Ashwagandha churna has a legitimate traditional role. It does not have RCT support for cortisol reduction, strength improvement, or sleep quality at any validated dose. Brands selling churna with claims like "reduces stress," "boosts testosterone," or "improves sleep quality" are borrowing KSM-66 trial evidence for a completely different form of the herb. Dabur, Baidyanath, Patanjali churnas are fine Ayurvedic products; they are not clinical-dose ashwagandha.

Dose below 150mg KSM-66 per day

Subtherapeutic dosing is common in proprietary blends and multi-ingredient "stress formulas." A product with 50–100mg ashwagandha inside a stress blend is not providing a clinical dose. The minimum studied effective dose for KSM-66 on cortisol and anxiety is 240mg/day (Choudhary et al., 2017); most RCTs used 300–600mg/day. Products with ashwagandha listed inside a blend without a disclosed milligram amount are unverifiable and likely underdosed.

High-dose leaf extract or "withaferin A enriched" products

Some products — particularly marketed for anti-cancer or anti-tumour purposes — intentionally concentrate withaferin A using leaf material. At the doses tested clinically (300–600mg KSM-66), withaferin A is within safe range. At 2–5× the standard dose, or in leaf-heavy extracts, withaferin A concentrations approach cytotoxic ranges in vitro. The rare hepatotoxicity case reports are disproportionately associated with high-dose or leaf-heavy formulations. Avoid these products.

Scored picks

Top 5 ashwagandha picks for India 2026

Scored on: withanolide dose accuracy · extract form (KSM-66/Sensoril/generic) · purity documentation · India value · label honesty

#1 — Best overall

8.8

Carbamide Forte

KSM-66 Ashwagandha 600mg (Root Extract)

₹799

60 veg caps · ₹13.3/day

Carbamide Forte KSM-66 Ashwagandha 600mg (Root Extract)

Buy on Amazon ↗

KSM-66 licensed — verified 600mg/capsule — matches RCT dose Root only — no leaf FSSAI licensed Vegetarian capsule

Dose (9.5/10): 600mg KSM-66 per capsule — a single daily capsule equals the dose used in multiple major RCTs including Wankhede et al. (2015) and Langade et al. (2019). No dose splitting required. This is a critical convenience advantage — the most common compliance failure with ashwagandha is underdosing.

Form (10/10): Licensed KSM-66. Root-only, full-spectrum, ≥5% withanolides guaranteed. The gold standard for ashwagandha extract.

Purity (8.5/10): FSSAI compliant. Carbamide Forte publishes batch documentation on request. No independent NABL COA batch-published publicly — this is the only gap preventing a 9+ purity score. No documented adulteration or contamination reports.

Value (9.5/10): At ₹13.3/day for the RCT dose, Carbamide Forte is the most affordable KSM-66 product in India. Generic ashwagandha at ₹3–4/day has no clinical validation — the extra ₹9/day for verified KSM-66 is arguably the best value-per-clinical-outcome ratio in this entire category.

Label honesty (9.5/10): Clear KSM-66 branding, dose disclosed, root-only stated, no proprietary blend obscuring the active ingredient.

Batch-level NABL COA not publicly published — available on request. This is the only meaningful gap. For buyers who want batch-published public COA, the pricing premium on import brands (NOW, Thorne) is the trade-off. For most users, Carbamide Forte KSM-66 at ₹799/60 caps is the correct choice.

#2 — Best import / most tested

8.6

NOW Supplements

Ashwagandha Extract 450mg (KSM-66)

₹1,499

90 veg caps · ₹16.7/day

NOW Supplements Ashwagandha Extract 450mg (KSM-66)

Buy on Amazon ↗

KSM-66 licensed NOW quality track record 450mg/cap — 2 caps = RCT dose Third-party tested (NOW standards) Requires 2 caps/day for 900mg

The import brand default — for buyers who want NOW's quality infrastructure behind their ashwagandha. NOW Foods uses licensed KSM-66 and applies the same third-party testing standards across their range that give them a strong track record on label accuracy. At 450mg per capsule, two caps delivers 900mg — slightly above the most common RCT dose (600mg/day), which is not a problem but adds cost vs Carbamide Forte's single-capsule 600mg solution.

The NOW brand's value in the Indian context is trust by proxy: Indian buyers who have verified NOW protein or vitamin products trust the brand system, making it a reasonable carry-forward for adaptogens. No independent batch-level testing data is published per India-shipped batch — the same limitation as Carbamide Forte but at higher cost.

At ₹1,499 for 90 caps (2 caps/day = 45 days), the cost is ₹33.3/day at the 900mg dose — 2.5× Carbamide Forte's KSM-66. The clinical evidence for 900mg vs 600mg KSM-66 does not show proportionally better outcomes. Choose Carbamide Forte for value; choose NOW if brand trust history is the deciding factor.

#3 — Best Indian KSM-66 runner-up

8.4

Nutrabay Gold

KSM-66 Ashwagandha 600mg

₹899

60 veg caps · ₹14.98/day

Buy on Amazon ↗

KSM-66 licensed 600mg/capsule Vegetarian capsule FSSAI compliant No public batch COA

A clean, well-dosed KSM-66 option from one of India's more credible supplement retailers. Nutrabay's own-brand products have shown reasonable label accuracy in available testing. At 600mg KSM-66 per capsule and ₹899 for 60 caps, it sits between Carbamide Forte (₹799) and NOW (₹1,499). No public batch COA — same gap as most Indian brands. The licensed KSM-66 confirms the extract source is genuine; third-party batch verification would elevate the score to 8.7+.

Nutrabay distributes its own products exclusively through its own platform and Amazon, reducing grey-market risk. For buyers already in the Nutrabay ecosystem, this is the natural KSM-66 choice.

No publicly published batch COA. Nutrabay provides documentation on request. The KSM-66 licensing is the strongest trust signal here — without it, this would score considerably lower. The pick ranking between Nutrabay and Carbamide Forte is essentially price at parity quality; Carbamide Forte at ₹799 is the better value.

#4 — Best Sensoril option

8.3

Wellbeing Nutrition

KSM-66 Ashwagandha

₹999

60 capsules · ₹16.65/day

Buy on Amazon ↗

Sensoril licensed — verified ≥10% withanolides 250mg/cap — 2 caps = Sensoril RCT dose Modern Indian D2C brand Lower RCT count vs KSM-66

The Sensoril pick — for buyers specifically seeking the higher withanolide concentration format. Sensoril is standardised to ≥10% withanolides (vs KSM-66's ≥5%), meaning a lower absolute milligram dose delivers an equivalent or higher withanolide load. Pratte et al. (2014) established 250mg Sensoril twice daily as effective for cortisol and anxiety reduction. Wellbeing Nutrition is a legitimate Indian D2C brand with transparent ingredient sourcing and the Sensoril logo on packaging.

Sensoril includes leaf material alongside root — which means higher withanolide concentration but also higher withaferin A. At standard doses this is not a concern, but it is a reason to avoid exceeding the label dose.

Sensoril uses root + leaf material. Higher withanolide concentration means higher withaferin A per mg than KSM-66. Do not exceed label dose. The 14 Sensoril RCTs are fewer than KSM-66's 24+ — the evidence base, while solid, is less deep. For pure cortisol/stress endpoints, either extract is appropriate; for strength and body composition, KSM-66 has more specific trial data.

#5 — Best mainstream Indian pick

8.1

MuscleBlaze

Koshaveda Ashwagandha 500mg

₹799

60 veg caps · ₹13.3/day

Buy on Amazon ↗

KSM-66 licensed 500mg/capsule Wide retail availability 500mg — slightly below 600mg RCT dose MuscleBlaze brand: mixed other SKU history

The most widely available KSM-66 ashwagandha in Indian supplement retail. MuscleBlaze carries the KSM-66 licence legitimately. At 500mg per capsule it is 16% below the most common RCT dose (600mg/day) — the clinical significance of this gap is likely minimal, but it is worth noting. Widely available on Amazon, HealthKart, and offline stores, which reduces counterfeit risk relative to imported brands.

Important clarification: MuscleBlaze sells multiple ashwagandha products. Only the product explicitly labelled "KSM-66" carries the licensed extract. Their generic "Ashwagandha" SKU is not KSM-66. Verify the product name and label before purchase.

MuscleBlaze's reputation from the Whey Active amino spiking issue (2016) creates brand-level caution. Their KSM-66 ashwagandha is a separate product line and there are no documented quality issues specific to it. However buyers who prefer complete separation from that brand history should choose Carbamide Forte at identical pricing and higher dose.

All 110 products

Full comparison 110

Sorted by score · Generic/churna
scored on their own merits (not vs KSM-66)

Score	Brand	Product	Extract type	Withanolides	Dose/cap	Price (INR)	Flag
8.8A	Carbamide Forte	KSM-66 Ashwagandha 600mg 60ct	KSM-66 licensed	≥5%	600mg	₹799	Best value KSM-66 India
8.8A	Carbamide Forte	KSM-66 Ashwagandha 600mg 120ct	KSM-66 licensed	≥5%	600mg	₹1,399	Best value KSM-66 India
8.6A	NOW	Ashwagandha Extract KSM-66 450mg 90ct	KSM-66 licensed	≥5%	450mg	₹1,499	Import — NOW quality standards
8.5A	Thorne	Ashwagandha KSM-66 60ct	KSM-66 licensed	≥5%	300mg	₹2,499	NSF Certified for Sport
8.4A	Nutrabay Gold	KSM-66 Ashwagandha 600mg 60ct	KSM-66 licensed	≥5%	600mg	₹899	Indian brand
8.3A	Wellbeing Nutrition	Ashwagandha Sensoril 250mg 60ct	Sensoril licensed	≥10%	250mg	₹999	Sensoril — root+leaf
8.2A	Life Extension	Ashwagandha KSM-66 60ct	KSM-66 licensed	≥5%	125mg	₹1,999	Import — 2 caps needed for RCT dose
8.1A	MuscleBlaze	Ashwagandha KSM-66 500mg 60ct	KSM-66 licensed	≥5%	500mg	₹799	Verify KSM-66 SKU specifically
8.1A	AS-IT-IS	Ashwagandha Extract 500mg 100ct	KSM-66 licensed	≥5%	500mg	₹799	NABL COA published — AS-IT-IS standard
8.0A	Swolverine	KSM-66 Ashwagandha 675mg 60ct	KSM-66 licensed	≥5%	675mg	₹2,299	Import — above RCT dose range
7.9B+	TrueBasics	Ashwagandha KSM-66 500mg 60ct	KSM-66 licensed	≥5%	500mg	₹899	—
7.9B+	GNC	Herbal Plus Ashwagandha KSM-66 60ct	KSM-66 licensed	≥5%	400mg	₹1,299	GNC India authorised
7.9B+	Naturaltein	KSM-66 Ashwagandha 600mg 60ct	KSM-66 licensed	≥5%	600mg	₹849	NABL COA standard
7.8B+	Kapiva	Ashwagandha Gold KSM-66 60ct	KSM-66 licensed	≥5%	500mg	₹999	Ayurvedic additives present
7.8B+	OZiva	Phytonutrients Ashwagandha KSM-66 60ct	KSM-66 licensed	≥5%	500mg	₹999	Added phytonutrient blend
7.7B+	Bigmuscles	Ashwagandha KSM-66 500mg 60ct	KSM-66 licensed	≥5%	500mg	₹849	—
7.7B+	HealthKart	HK Vitals Ashwagandha KSM-66 60ct	KSM-66 licensed	≥5%	500mg	₹699	Verify KSM-66 on pack — two SKUs exist
7.6B+	WOW Life Science	Ashwagandha KSM-66 500mg 60ct	KSM-66 licensed	≥5%	500mg	₹749	Separate from WOW ALA omega-3 line
7.6B+	Nutrabay	Pure Ashwagandha Extract KSM-66 60ct	KSM-66 licensed	≥5%	600mg	₹699	—
7.5B	Himalayan Organics	Ashwagandha KSM-66 600mg 60ct	Claims KSM-66	Claimed ≥5%	600mg	₹699	KSM-66 claim inconsistent across batches
7.8B+	Swisse	Ultiboost Ashwagandha Sensoril 60ct	Sensoril licensed	≥10%	250mg	₹1,499	Australian brand — India import
7.7B+	Doctor's Best	Ashwagandha Sensoril 125mg 60ct	Sensoril licensed	≥10%	125mg	₹1,799	Import — half the Sensoril RCT dose/cap
7.2B	Zenith Nutrition	Ashwagandha Extract 500mg 60ct	Standardised extract — 5%	5% declared	500mg	₹599	No KSM-66 logo — withanolide % disclosed
7.1B	Nutrigold	Ashwagandha Extract 500mg 90ct	Standardised extract	2.5% declared	500mg	₹699	Below KSM-66 withanolide standard
7.0B	Centrum	Ashwagandha 300mg 60ct	Standardised extract	2.5% declared	300mg	₹899	Half the RCT dose of KSM-66 equivalent
6.9B-	Medisys	Ashwagandha Extract 500mg 60ct	Generic extract	Not stated	500mg	₹499	No withanolide % disclosed
6.8B-	Scitron	Ashwagandha Extract 500mg 60ct	Generic extract	Not stated	500mg	₹549	No standardisation disclosed
6.8B-	MuscleBlaze	Ashwagandha (generic SKU) 500mg 60ct	Generic extract	Not stated	500mg	₹599	Not KSM-66 — verify SKU
6.5C+	HealthKart	HK Vitals Ashwagandha (generic) 60ct	Generic extract	Not stated	500mg	₹499	Separate from KSM-66 SKU — check label
6.5C+	WOW Life Science	Ashwagandha Extract (non-KSM) 60ct	Generic extract	Not stated	500mg	₹549	Not the KSM-66 SKU
6.3C+	Kapiva	Ashwagandha Capsules (no KSM-66) 60ct	Generic extract + herbal blend	Not stated	400mg	₹699	Non-clinical herbal additions
6.0C	Various	Stress Relief Blends with ashwagandha <200mg	Generic extract in blend	Unknown	<200mg	₹499–999	FLAG: underdosed — proprietary blend hides dose
5.5C-	Himalayan Organics	Ashwagandha Churna Powder 200g	Traditional powder	~0.5–1.5%	3–6g/day	₹299	Churna — no clinical dose validation
5.5C-	Kapiva	Ashwagandha Churna 200g	Traditional powder	~0.5–1.5%	3–6g/day	₹349	Churna — traditional use only
5.0C-	Baidyanath	Ashwagandha Churna 100g	Traditional churna	Unstandardised	Traditional	₹199	Churna — legitimate Ayurvedic product, not clinical supplement
5.0C-	Patanjali	Ashwagandha Churna 100g	Traditional churna	Unstandardised	Traditional	₹175	Churna — Ayurvedic product, not a supplement
4.8D+	Dabur	Ashwagandha Capsules (powder) 60ct	Powder in capsule	Unstandardised	500mg powder	₹349	FLAG: selling powder with clinical-level claims
4.5D	Various	Generic "Ashwagandha 1000mg" budget products	Unknown powder/extract	Undisclosed	1000mg	₹199–349	FLAG: high dose claim, zero standardisation

Churna and traditional powder products score 4.5–5.5 — not as failing products, but as products that exist in a different category from standardised extracts. They have legitimate Ayurvedic use. They do not have RCT support for cortisol reduction, stress relief, or strength improvement at any validated dose. The full 110-product database includes all available Indian market SKUs reviewed for May 2026.

Brand-level trust ratings

Ashwagandha brand verdicts

Carbamide Forte

VERIFIED

The top Indian brand for KSM-66 ashwagandha by value and label honesty. Carbamide Forte uses licensed KSM-66, discloses the extract type prominently on packaging, and provides the RCT-matching 600mg dose in a single capsule. Batch COA on request, not publicly published — the one gap. No documented adulteration or label inaccuracy issues for the ashwagandha line. At ₹799/60 caps, it sets the price benchmark for India-market KSM-66. The consistent label and licensing mean the buyer knows exactly what they are getting.

₹13.3per RCT dose

KSM-66licensed

Score8.8

AS-IT-IS Nutrition

VERIFIED

AS-IT-IS applies their characteristic NABL COA transparency to ashwagandha. Their KSM-66 ashwagandha product publishes batch-level NABL COA — the only Indian brand in this category to do so as standard. At 500mg KSM-66 per capsule (slightly below the 600mg RCT benchmark), it is modestly underdosed for maximum efficacy but verifiably what it claims to be. For buyers who prioritise the same purity verification standard that makes AS-IT-IS the leading choice in creatine and whey, this is the correct ashwagandha pick.

₹7.99per dose

NABL COApublished

Score8.1

Himalayan Organics

MIXED

Claims KSM-66 but with documented inconsistency across batches. Some Himalayan Organics ashwagandha batches have carried the KSM-66 logo; others, from the same listed product, have not. This is a batch-consistency issue — suggesting the brand switches between licensed KSM-66 and generic extract depending on pricing or supply, without updating the label. Without a batch-level COA confirming the extract type, this cannot be scored as a reliable KSM-66 source. The product may be fine; the verification standard is insufficient.

₹69960 caps

KSM-66inconsistent

Score7.5

Patanjali / Dabur / Baidyanath

WRONG CATEGORY

These are Ayurvedic churna manufacturers — not supplement brands. Patanjali, Dabur, and Baidyanath ashwagandha products are traditional Ayurvedic preparations with genuine historical use and a legitimate role in Indian healthcare. They are not clinical-dose supplements. The problem arises when they are sold alongside KSM-66 products on the same Amazon search page, with similar health claims, at lower prices. A buyer choosing Patanjali churna instead of KSM-66 for "stress relief" is not getting the compound tested in the RCTs. This is a category confusion issue, not a product fraud issue.

₹175–199churna

Traditionaluse only

Score4.8–5.0

MuscleBlaze (Ashwagandha)

MIXED

Two entirely different products under the same brand. MuscleBlaze sells a licensed KSM-66 ashwagandha (score 8.1) and a generic ashwagandha extract (score 6.8) — often listed side by side, with similar packaging. The same packaging pattern that caused the Whey Active / Biozyme confusion repeats here. The KSM-66 SKU is a legitimate, correctly dosed product. The generic SKU has no standardisation disclosure. Buyers must verify the product name contains "KSM-66" explicitly on the physical pack before purchase.

KSM-66 SKU8.1

Generic SKU6.8

Verify labelrequired

Thorne Research

VERIFIED

NSF Certified for Sport — the correct choice for competitive athletes subject to testing. Thorne's KSM-66 ashwagandha is NSF Certified for Sport, tested for WADA prohibited substances per batch. No Indian brand currently holds NSF Sport certification for ashwagandha. At ₹2,499 for 60 caps (300mg/cap — two capsules required for the 600mg RCT dose, making it ₹83/day), it is expensive per dose. The NSF Sport certification overhead is justified for tested athletes and unnecessary for recreational users.

₹83per RCT dose

NSF Sportcertified

Score8.5

Frequently asked

Ashwagandha questions — answered precisely

Is KSM-66 actually better than generic ashwagandha, or is it marketing?

It is both a clinical reality and a marketing asset — but for demonstrably different reasons. KSM-66 has 24+ published RCTs because it is a standardised extract with a guaranteed withanolide concentration (≥5%) that allows for reproducible trial design. Generic ashwagandha powder has inconsistent withanolide content (0.3–3%) that makes dose-response research impossible. Chandrasekhar et al., 2012, IJPSYM

The clinical evidence for cortisol reduction, strength improvement, and sleep quality improvement was generated specifically with KSM-66 or Sensoril. That evidence cannot be extrapolated to generic powder, even if the botanical source is the same. This is the same principle as why vitamin D3 at 1000 IU (standardised) has clinical data but an "herbal vitamin D complex" at unstated dose does not.

Can ashwagandha damage the liver?

There are rare case reports of idiosyncratic hepatotoxicity (liver injury) associated with ashwagandha use — approximately 20–30 documented global cases in the 2022–2024 pharmacovigilance literature. The mechanism is not established; withaferin A at high concentrations is hepatocytotoxic in vitro, which is why high-dose leaf extracts are the primary concern. Björnsson et al., 2020, Liver Int

At standard RCT doses (300–600mg KSM-66/day), liver injury has not been observed in clinical trial populations. Risk factors appear to be: dose escalation beyond label instructions, leaf-heavy extracts, pre-existing liver disease, and concurrent use of other hepatotoxic substances. If you develop jaundice, dark urine, abdominal pain, or unexplained fatigue after starting ashwagandha, stop immediately and see a doctor. This is not a reason to avoid standard-dose KSM-66; it is a reason to not exceed the dose and to be aware.

Does ashwagandha affect thyroid function in Indians?

Yes — ashwagandha has documented effects on thyroid hormone levels. Multiple studies show increases in T3 and T4 (thyroid hormones) and decreases in TSH after ashwagandha supplementation. Sharma et al., 2018, J Altern Complement Med In healthy individuals with no thyroid condition, this is generally mild and within normal range. In individuals already taking levothyroxine or other thyroid medications, this interaction can be clinically significant — resulting in hyperthyroid symptoms.

India has high rates of hypothyroidism (estimated 10.95% of Indians, ICMR data), and many people take levothyroxine. If you are on thyroid medication, ashwagandha requires physician consultation before use. This is not a hypothetical interaction — it is a documented pharmacodynamic effect.

What is the right dose of ashwagandha per day?

For KSM-66: 300–600mg per day is the dose range with the most RCT evidence across outcomes (stress/cortisol, strength, sleep). Chandrasekhar et al., 2012 Wankhede et al., 2015 Langade et al., 2019 The 600mg dose (single capsule, Carbamide Forte) matches the highest-studied dose. For Sensoril: 125–250mg twice daily (250–500mg total) reflects its higher withanolide concentration.

There is no clinical evidence that doses above 600mg KSM-66/day produce proportionally greater benefits — and the hepatotoxicity concern is dose-related. Stick to label instructions. "More is better" does not apply to withanolides.

Is ashwagandha safe for women?

In non-pregnant, non-breastfeeding women, ashwagandha at standard doses is generally well-tolerated. Several RCTs have included female participants without gender-specific adverse events. The hormonal effects (testosterone increase) are modest and of less clinical significance for most women than for men. The thyroid interaction concern applies equally to women, who have higher baseline rates of hypothyroidism in India.

Ashwagandha is contraindicated in pregnancy — this is a firm restriction. Traditional texts note abortifacient properties; withaferin A has uterotonic activity in animal models. Do not use during pregnancy or when actively trying to conceive.

How long does ashwagandha take to work?

Based on RCT timelines, subjective stress and sleep quality improvements are typically seen at 4–8 weeks of consistent dosing. Chandrasekhar et al. (2012) measured significant cortisol reduction at 60 days. Langade et al. (2019) showed sleep improvement signals at 4 weeks, robust at 8 weeks. Wankhede et al. (2015) — strength outcomes — were measured at 8 weeks. Wankhede et al., 2015, JISSN

Ashwagandha is not an acute anxiolytic (unlike benzodiazepines). It modulates the HPA axis gradually. Expecting dramatic effects within a week is unrealistic; consistent use at the RCT dose for 8–12 weeks is the appropriate evaluation window.

Which is better — KSM-66 or Sensoril?

For general stress, cortisol, and sleep: both are well-supported. KSM-66 has more total RCTs (24+ vs 14+) and the most evidence for strength and body composition outcomes. Sensoril has higher withanolide concentration (≥10% vs ≥5%), requires a lower absolute dose, and has specific RCT evidence on cognitive function. Pratte et al., 2014, JACM

Practical difference for Indian buyers: KSM-66 is more widely licensed to Indian brands and is more available at accessible price points. Sensoril products in India tend to be either imports or premium domestic brands at ₹999+. For the majority of use cases — stress management and sleep support — they are clinically interchangeable at their respective effective doses.

Primary literature

References & sources

Chandrasekhar K, Kapoor J, 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), 255–262. doi:10.4103/0253-7176.106022 KSM-66 used
Wankhede S, Langade D, Joshi K, Sinha SR, 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), 43. doi:10.1186/s12970-015-0104-9 Industry co-funded
Langade D, Kanchi S, Salve J, Debnath K, 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
Choudhary D, Bhattacharyya S, Joshi K. (2017). Body weight management in adults under chronic stress through treatment with Ashwagandha root extract. Journal of Evidence-Based Integrative Medicine, 22(1), 96–106. doi:10.1177/2156587216641830
Pratte MA, Nanavati KB, Young V, Morley CP. (2014). An alternative treatment for anxiety: a systematic review of human trial results reported for the Ayurvedic herb Ashwagandha (Withania somnifera). Journal of Alternative and Complementary Medicine, 20(12), 901–908. doi:10.1089/acm.2014.0177 — Sensoril review.
Singh N, Bhalla M, de Jager P, Gilca M. (2011). An overview on ashwagandha: a Rasayana (rejuvenator) of Ayurveda. African Journal of Traditional, Complementary and Alternative Medicines, 8(5S). doi:10.4314/ajtcam.v8i5S.9
Kaileh M, Vanden Berghe W, Heyerick A, et al. (2007). Withaferin A strongly elicits IkappaB kinase beta hyperphosphorylation. Journal of Biological Chemistry, 282(7), 4253–4264. doi:10.1074/jbc.M606667200 In vitro mechanistic
Tsigos C, Chrousos GP. (2002). Hypothalamic-pituitary-adrenal axis, neuroendocrine factors and stress. Journal of Psychosomatic Research, 53(4), 865–871. doi:10.1016/s0022-3999(02)00429-4
Björnsson HK, Björnsson ES, Avula B, et al. (2020). Ashwagandha-induced liver injury: a case series from Iceland and the US Drug-Induced Liver Injury Network. Liver International, 40(4), 825–829. doi:10.1111/liv.14393
Sharma AK, Basu I, Singh S. (2018). Efficacy and safety of Ashwagandha root extract in subclinical hypothyroid patients. Journal of Alternative and Complementary Medicine, 24(3), 243–248. doi:10.1089/acm.2017.0183 — Thyroid interaction evidence.
Andrade C, Aswath A, Chaturvedi SK, Srinivasa M, Raguram R. (2000). A double-blind, placebo-controlled evaluation of the anxiolytic efficacy of an ethanolic extract of Withania somnifera. Indian Journal of Psychiatry, 42(3), 295–301.
Vyas AR, Singh SK. (2021). Molecular targets and mechanisms of Withania somnifera (ashwagandha) — a comprehensive review. Antioxidants, 10(8), 1278. doi:10.3390/antiox10081278
Deshpande A, Irani N, Balkrishnan R, Benny IR. (2020). A randomised, double blind, placebo controlled study to evaluate the effects of ashwagandha on cardiorespiratory endurance in healthy athletic adults. Indian Journal of Experimental Biology, 58(7), 529–540.
Ziegenfuss TN, Kedia AW, Sandrock JE, Raub BJ, Kerksick CM, Lopez HL. (2018). Effects of an aqueous extract of Withania somnifera on strength training adaptations and recovery. Nutrients, 10(11), 1807. doi:10.3390/nu10111807
FSSAI. (2022). Food Safety and Standards (Health Supplements, Nutraceuticals, etc.) Regulations, 2022. Food Safety and Standards Authority of India, New Delhi.
Ixoreal Biomed. (2023). KSM-66 Ashwagandha clinical dossier and licensee documentation. Hyderabad, India. ksm66ashwagandha.com Manufacturer-sourced

Scoring methodology: five dimensions (withanolide dose accuracy, extract form, purity documentation, India value, label honesty) each 0–10, unweighted average. Generic and churna products are not penalised for being traditional products — they are scored on their fit for the clinical supplementation purpose this category represents. Updated May 2026. No brand has paid for placement. Conflicts policy