Ingredient face-off
Best Ashwagandha Supplements Compared: KSM-66 vs Sensoril vs Full-Spectrum
Ashwagandha is the most-studied adaptogen for stress and sleep, but the extract standardization (KSM-66 vs Sensoril vs generic full-spectrum), withanolide content, and dose adequacy vary dramatically across products. Most RCT evidence uses either KSM-66 (Chandrasekhar 2012 sleep, Lopresti 2019 stress) or Sensoril (Auddy 2008), not generic 'ashwagandha'. This head-to-head ranks the top-scoring ashwagandha products in the Vyvata catalog on those criteria. Read the rubric →
Head-to-head summary
| # | Product | Score | Tier | Strongest on |
|---|---|---|---|---|
| 1 | NM Ashwagandha Cp 60 | 72 | Verified | Evidence + Manufacturing |
| 2 | Nature's Lab KSM-66® Ashwagandha Extract - 120 Capsules — Nature's Lab | 68 | Standard | Evidence + Formulation |
| 3 | Organic Ashwagandha Adaptogen 60 Capsules — Healthspan Holistic | 66 | Standard | Evidence + Manufacturing |
| 4 | Ashwagandha + Black Pepper Complex — The Menopause Shoppe | 65 | Standard | Evidence + Formulation |
| 5 | Nature's Lab Gold Magnesium + Ashwagandha with L-Theanine - 60 Capsules — Nature's Lab | 63 | Standard | Safety + Evidence |
| 6 | SENSORIL® ASHWAGANDHA — BLACKLABEL Supplements | 62 | Standard | Evidence + Formulation |
Top score: NM Ashwagandha Cp 60 at 72/100 — see the deep-dive for the reasoning.
Per-product deep dive
#1 NM Ashwagandha Cp 6072/100 · Verified
Nature Made ashwagandha using Sensoril standardized extract (10% withanolides), the strain used in RCTs like Auddy 2008 and Salve 2019 showing reduced cortisol and perceived stress at 125-600 mg/day. Nature Made is USP Verified across most SKUs. Solid evidence-backed formulation and reputable USP manufacturing lift this well into Verified.
#2 Nature's Lab KSM-66® Ashwagandha Extract - 120 Capsules68/100 · Standard
Patented KSM-66 ashwagandha, 600 mg standardized to 5% withanolides + 700 mg root powder per 2-cap serving. KSM-66 has multiple placebo-controlled RCTs for stress/cortisol (Chandrasegaran 2012; Salve 2019) at 600 mg/day — this hits it. Standard, close to Verified.
See the full Nature's Lab KSM-66® Ashwagandha Extract - 120 Capsules page →
#3 Organic Ashwagandha Adaptogen 60 Capsules66/100 · Standard
1,300 mg organic ashwagandha per serving with black pepper for absorption; USA GMP+NSF facility. Chandrasegaran 2012 and Salve 2019 RCTs demonstrate stress/cortisol effects at 250–600 mg standardized extract — non-standardized 1,300 mg powder is likely equivalent or slightly weaker. Standard.
See the full Organic Ashwagandha Adaptogen 60 Capsules page →
#4 Ashwagandha + Black Pepper Complex65/100 · Standard
1000 mg organic ashwagandha root per serving + black pepper for bioavailability. Ashwagandha at 300-600 mg extract/day reduces perceived stress and cortisol (Chandrasekhar 2012 RCT; Salve 2019). Note this is root powder, not KSM-66/Sensoril standardized extract, which are the clinically studied forms. Trust Center COAs cited.
#5 Nature's Lab Gold Magnesium + Ashwagandha with L-Theanine - 60 Capsules63/100 · Standard
150mg magnesium glycinate + 60mg Shoden ashwagandha (standardized 35% glycowithanolides) + 200mg L-theanine. Shoden ashwagandha has RCT support for stress and sleep (Langade et al. 2021), and 200mg L-theanine matches the dose used in Kimura et al. 2007 for calm alertness. Best-formulated product in the Nature's Lab line.
See the full Nature's Lab Gold Magnesium + Ashwagandha with L-Theanine - 60 Capsules page →
#6 SENSORIL® ASHWAGANDHA62/100 · Standard
Sensoril is a branded ashwagandha extract standardized to withanolides + withaferin, backed by RCTs at 125-250mg for stress and cognition (Auddy 2008; Pingali 2014). Piperine addition aids absorption of some botanicals, though ashwagandha itself doesn't require it. Withanolide % and dose per capsule not disclosed on listing. Well-chosen branded ingredient in an unremarkable label.
How the scoring works
Every product is scored on six dimensions — evidence (RCT quality supporting the active ingredients at the label dose), formulation (dose adequacy, bioavailability form, redundancy), manufacturing (third-party testing, GMP, facility audits), safety (adverse-event profile, interactions, dose ceiling), transparency (dose disclosure vs proprietary blends, honest marketing), and sustainability (sourcing, packaging, corporate practice). Tier thresholds: Elite 85+, Verified 70–84, Standard 50–69, Rejected 0–49. Rejected products stay listed with reasons. Full rubric →