Sports Research
Organic Ashwagandha KSM-66EDE Score
89/100
Verdict
Buy
CPED
$0.30 / effective day/day
Best value
Form
capsule
Ashwagandha comparison
Best Ashwagandha Supplements Compared (2026): EDE Scored Reviews
Ashwagandha (Withania somnifera) is the most-studied adaptogen for cortisol reduction, sleep quality, and stress resilience. Two patented standardizations dominate the premium tier: KSM-66 (Ixoreal Biomed, 5 percent withanolides, root-only extract) and Sensoril (Natreon, 10 percent withanolides, root + leaf extract). The clinical effective dose is 300-600 mg/day for KSM-66; 250-500 mg/day for Sensoril.
Both products in our catalog use KSM-66, the form with the broadest evidence base for testosterone support and cortisol modulation in men 40+.
Editor's Pick
Sports Research
Organic Ashwagandha KSM-66
EDE Score
89/100Verdict
Buy
CPED
$0.30 / effective day/day
Sports Research Organic Ashwagandha uses 600mg KSM-66 (5% withanolides HPLC standardized) at the top of the clinical range, USDA Organic certified, single-ingredient formulation. We score it 89/100. CPED $0.30/day. Strong BUY runner-up to NSF Certified for Sport alternatives.
Full comparison
Sorted by EDE Score (highest first). Tap a product name to read the full review.
EDE Score
88/100
Verdict
Buy
CPED
$0.42 / effective day/day
Form
capsule
| Product | Verdict | EDE | Form / Dose | CPED | Cert |
|---|---|---|---|---|---|
| Buy | 89/100 | capsule1 capsule | $0.30 / effective day/day Best value | Standard |
| Buy | 88/100 | capsule1 capsule | $0.42 / effective day/day | NSF Sport |
Frequently asked questions
- KSM-66 or Sensoril ashwagandha?
- KSM-66 is preferred for testosterone support and exercise performance (root-only, lower withanolide percentage, more forgiving on the digestive tract). Sensoril is preferred for stress and sleep endpoints (root + leaf, higher withanolide concentration, more sedating). Most men 40+ studies use KSM-66.
- How does ashwagandha affect testosterone?
- KSM-66 at 600 mg/day for 8 weeks increased serum testosterone 10-22 percent in men with infertility (Ambiye 2013) and stressed men (Lopresti 2019). Effects are mediated through cortisol reduction (chronic high cortisol suppresses testosterone) rather than direct androgenic action.
- Should I take ashwagandha at night or morning?
- Either, but evening dosing typically supports sleep onset and HPA-axis recovery better. Morning dosing supports daytime stress resilience without sedation. Some users split: 300 mg morning + 300 mg evening. Take with food to minimise mild GI effects in the first week.
- Are there safety concerns?
- Generally well-tolerated. Avoid in autoimmune thyroid disease (ashwagandha modulates thyroid function), pregnancy, and concurrent benzodiazepine use. Rare hepatotoxicity case reports exist but are dose-related; stay within 600 mg/day for KSM-66 and discontinue if liver enzymes rise.