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.

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

What brought you here?

Every door opens to the same bottle of KSM-66®, matched to the reason you came.

A calmer baseline

For everyday stress

For the tension that follows you to bed, wakes you at 3 a.m., and sits on your chest before a big meeting.†

Shop for stress relief →
Faster sleep onset

For sleep

For racing thoughts at midnight and the 3 a.m. wake up. Supports sleep onset and quality so you actually rest.†

Shop for better sleep →
Sharper attention

For calm focus

For the brain with 40 open tabs. Supports steady concentration and clarity, without stimulants or a crash.†

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Improved well being

For mood

For low, flat days and a short fuse. Supports emotional balance and a steadier baseline through stress.†

Shop for mood support →
Strength and recovery

For energy and performance

For workouts that used to feel easy. Supports strength, endurance, and recovery across a hard block.†

Shop for performance →
Daily adaptogen

For daily resilience

For busy seasons, travel, and high pressure weeks. A daily adaptogen that helps you hold a steadier line.†

Shop for resilience →
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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.

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
3 Skip, pause, or cancel with one click
4 First access to every new formula