#14 in Herbal Supplements Third-Party Tested

Swanson Ashwagandha KSM-66 600mg (60 Veggie Capsules)

Name: Swanson Ashwagandha KSM-66 600mg (60 Veggie Capsules)
Brand: Swanson
Rating: 4.5 (6800 reviews)

by Swanson

"Patented KSM-66 ashwagandha at the best price — 600mg full-spectrum root extract"

Amazon Rating

4.5/5

Reviews

6,800+

Price Range

$12-16

Servings

60 servings

GMP Certified

Our Editorial Rating

8.5

Very Good

FormVeggie Capsule

CategoryHerbal Supplements

SubcategoryAshwagandha KSM-66 (Stress, Performance)

View on Amazon

Overview

Swanson Ashwagandha KSM-66 provides 600mg of the patented KSM-66 full-spectrum root extract per capsule. KSM-66 is the most clinically studied ashwagandha extract, with 24+ gold-standard clinical trials demonstrating benefits for stress reduction, cortisol management, athletic performance, and cognitive function. Swanson's version offers the best price-to-quality ratio for KSM-66, providing a 2-month supply for under $16.

Key Ingredients

Ingredient	Amount
KSM-66 Ashwagandha Root Extract	600 mg

Pros & Cons

What We Like

Patented KSM-66 — most studied extract
600mg clinical dose
60 capsules = 2-month supply
Under $16 — best value KSM-66
24+ clinical trials backing

What Could Be Better

Swanson less premium than Thorne/PE
Single ingredient only
May cause drowsiness in some
Not NSF certified

Who Is This For?

Best For

Budget KSM-66 supplementation
Stress and cortisol management
Athletic performance support
Those wanting clinically studied ashwagandha

Not Ideal For

Those wanting premium brand
Those needing NSF certification
Thyroid condition patients (consult MD)

Our Verdict

8.5/10 — Very Good

The best value KSM-66 ashwagandha available. Swanson delivers the same patented extract used in clinical trials at roughly half the price of premium brands.