Nootropics Depot KSM-66 Ashwagandha Capsules review

Nootropics Depot ranks first because it pairs a full 300mg dose of KSM-66 with the lowest daily cost among the KSM-66 products we compared. Each capsule holds 300mg of KSM-66 root extract, and one capsule is the listed serving, so the 90 count bottle at $19.99 lasts three months at about $0.22 a day. The product page says the extract is root-only and full-spectrum and that the maker uses only water and ethanol in extraction. The page also lists Certificates of Analysis by lot number, so buyers can check the results for their own bottle, and it says the product is third-party lab tested. Larger 180 and 365 count bottles are sold for people who take it every day. The trade-offs are small: free shipping only starts at $50, and the page notes the product cannot ship to Japan. Anyone who prefers a gummy or an organic certified caplet should look further down this list.

Who it is for

daily users who want KSM-66 at a low cost per capsule

Price

$19.99 for 90 capsules (one 300mg capsule per serving); 180 and 365 count bottles also sold.

Now: $19.99
Quoted from the vendor pricing page on November 13, 2026.

Key features

• 300mg of KSM-66 ashwagandha root extract in one capsule
• Root-only, full-spectrum extract made with water and ethanol
• Lot-by-lot Certificates of Analysis posted on the product page
• 90, 180 and 365 count bottles
• Free same-day shipping on US orders over $50 placed by the cutoff

Strengths and weaknesses

• Strength: $19.99 for 90 one-capsule servings is about $0.22 a day
• Strength: You can match the lot number on your bottle to a posted COA
• Strength: One capsule a day, with or without food
• Weakness: The product page notes it cannot ship to Japan
• Weakness: Free shipping starts at $50, well above the price of one bottle
• Weakness: KSM-66 here is root-only, so it suits people who want root extract rather than a root and leaf blend

Key facts

• Extract: KSM-66 ashwagandha root
• Per serving: 300mg (one capsule)
• Sizes: 90, 180 and 365 capsules
• Testing: Third-party lab tested, COA per lot

Where it ranks

Nootropics Depot KSM-66 Ashwagandha Capsules is No. 1 in our Best Ashwagandha Supplements verdict.