First order offer · Free shipping included

Claim 50% off your first bottle.

★★★★★ 4.75 from 140+ verified customers

KSM-66® ashwagandha, 600mg of pure root extract, two capsules a day. First bottle $24.99 with Subscribe and Save, free shipping included.

Claim 50% off

Choose how you start

1 / 13
View Supplement Facts

Third Party
Tested

90 Vegan
Capsules

45 Day
Supply

KSM-66®
Root Only
Trusted wellness support

KSM-66® Ashwagandha 600mg, 90 Capsules, Optibio

Premium Root Extract Capsules

Support calm, sleep, focus, recovery, and balanced cortisol levels with clinically studied KSM-66® ashwagandha root extract.

Third Party Lab Tested, every batch verified for purity & potency

Key Benefits

  • Supports stress resilience and calm*
  • Supports sleep and recovery*
  • Supports focus and clarity*
  • Supports balanced cortisol levels*
600mg

Per serving

90

Capsules

45

Day supply

KSM-66®

Root extract

Choose Your Purchase Option

New here? Your first bottle is 50% off, and you can cancel anytime. No reason to wait.

90 Day
Money Back Guarantee

Third Party
Tested

Secure
Checkout

Why OptiBio? +
Single ingredient, full 600mg clinical serving of KSM-66® root extract, third party tested for purity and potency, with a 90 day money back guarantee.
Benefits +
Supports stress resilience and calm, healthy sleep, focus and clarity, and balanced cortisol levels.*
How to Use +
Take 2 capsules daily with food, or as directed by your healthcare professional. Give it 4 to 6 weeks of consistent use.
Ingredients +
KSM-66® Ashwagandha root extract 600mg (standardized to 5% withanolides). Vegan capsule. Free of gluten, soy, and dairy.
Supplement Facts +
Supplement facts panel
Science & Clinical Ingredient +
KSM-66® is the branded ashwagandha root extract studied in numerous published human clinical studies. See the science.
FAQs +
Common questions about dosing, timing, and what to expect. Read the FAQ.

Tested, then shown to you

Every batch is third party tested for identity, potency, heavy metals, and microbes. Made in a GMP certified US facility.

600mg
KSM-66® root extract
5%
withanolides
Root
only, no leaf
Every
batch tested

Before you claim it

Is the 50% off real?+

Yes. Your first Subscribe and Save bottle is $24.99 instead of $49.99, applied automatically, no code. After that it is $36.99 every 45 days. Cancel anytime.

What if it is not for me?+

90 day money back guarantee. No questions asked, full refund, keep the bottle.

How fast will I feel it?+

Ashwagandha builds over weeks, not hours. Most people judge it over 6 to 8 weeks of daily use. That is why the guarantee is 90 days.

How do I take it?+

Two small capsules a day with food, together or split morning and evening. One bottle is 45 days.