Ashwagandha, matched to what you need.

One premium root extract at the full 600mg dose, made for stress, sleep, focus, mood, and performance routines. Pick your reason, pick your supply.

600mg
Per daily serving
5%
Withanolides
90
Capsules per bottle
◆ KSM-66® Root Extract · 90 caps

KSM-66® Ashwagandha 600mg, 90 Capsules

Premium Root Extract Capsules

Support calm, sleep, focus, recovery, and your body's natural stress response with KSM-66® ashwagandha root extract, root only at a full 600 mg serving.*

Third Party Lab Tested for purity & potency

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90 day refund. Keep the bottle. Cancel in one click.

First bottle $24.99 (50% off). Then $36.99 every 45 days. Free shipping on subscription. Cancel anytime. One-time is $49.99 + $5.99 shipping. Refund policy

One bottle is 45 days. On subscription the next bottle ships every 45 days. 90 day money back guarantee, keep the bottle.

  • 90 day refund, keep bottle
  • Third party tested
  • Made in New York
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Key Benefits

  • Supports stress resilience and calm*
  • Supports sleep and recovery*
  • Supports focus and clarity*
  • Supports the body's natural stress response*
600mg

Per serving

90

Capsules

45

Day supply

KSM-66®

Root extract

Why OptiBio? +
Single active ingredient, full 600 mg 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 the body's natural stress response.*
How to Use +
Take 2 capsules daily with food, or as directed by your healthcare professional. Give it consistent daily use.
Ingredients +
KSM-66® Ashwagandha root extract 600mg (standardized to 5% withanolides). Vegetarian 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.

Reach for Optibio if you...

KSM-66® is an adaptogen. It supports the systems that manage your stress response rather than masking symptoms.

Feel wired but tired. Stressed during the day, restless at night.

Carry tension into sleep and wake before the alarm.

Want calmer focus without the jitter of more caffeine.

Notice a shorter fuse during high pressure weeks.

Train hard and want better recovery and endurance.

Prefer one clean ingredient over a 12 item "stress blend."

26% off, every order.

Choose your cadence. Skip, swap, or cancel anytime. Free shipping on every shipment.

Start a subscription
1 26% off every order, automatically
2 Free shipping on every shipment
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4 First access to every new formula