How can we help?

Search a keyword, or browse by topic below. If it isn't here, email support@optibiosupplements.com. There's always a human at the other end.

Product

3 questions
What is Optibio?

Optibio is a single active ingredient ashwagandha supplement. Each capsule contains 300 mg of KSM-66® Ashwagandha. The full daily dose is 600 mg, taken as two capsules a day (both together, or one in the morning and one in the evening). A bottle of 90 capsules is a 45 day supply.

Why only one product?

Most supplement companies grow by adding SKUs. We chose the opposite: make one product and make it the best version of itself. Less inventory means more attention on sourcing, dosing, and testing.

What does it taste like?

Nothing. It's an opaque vegetable capsule. The contents have a faintly earthy aroma if you open one. Ashwagandha root is bitter and grassy, but the capsule keeps that to itself.

Ingredients

4 questions
What's inside the capsule?

KSM-66® Ashwagandha root extract (300 mg per capsule, standardized to 5% withanolides) in a vegetable HPMC capsule with magnesium stearate, as listed on the label.

What is KSM-66® specifically?

KSM-66® is a proprietary, full spectrum ashwagandha extract made by Ixoreal Biomed. It's root only (no leaf), produced through a 14 day green chemistry extraction without alcohol or synthetic solvents, and standardized to 5% withanolides. It is a root only extract, standardized to 5% withanolides.

How is KSM-66® different from regular ashwagandha?

KSM-66® is a root only ashwagandha extract, standardized to 5% withanolides. Generic ashwagandha often uses whole plant or leaf material at lower amounts, frequently 300 mg or less. Optibio uses KSM-66® at the full 600 mg daily serving.

Is it vegan? Gluten free? Non GMO?

Yes to all three. No animal derived ingredients, no gluten, non GMO. Free of soy, dairy, eggs, peanuts, and tree nuts.

Any fillers or flow agents?

The full ingredient list is on the label: KSM-66® ashwagandha root extract, a vegetable HPMC capsule, and magnesium stearate. No synthetic dyes, no added sugar, no proprietary blends.

Use and dosing

4 questions
How and when should I take it?

Two capsules a day. Take them together, or split one with breakfast and one with dinner. Take it with food when you can. Adaptogens are better absorbed alongside a meal.

How much KSM-66® ashwagandha should I take per day?

The full serving is 600 mg of KSM-66® per day, taken as two capsules a day (both together or split morning and evening). Optibio provides exactly that dose. Effects build gradually, so give it at least 30 days of daily use.

When will I feel a difference?

Adaptogens work gradually with consistent daily use. Individual experiences vary. This is not a promise of results.

Can I take it with coffee?

Yes. KSM-66® is non stimulating and won't cancel your caffeine. Many people take their morning dose with coffee and report calmer focus, not less energy.

Can I take more than 600 mg a day?

We don't recommend it. 600 mg is the full daily serving. More isn't better. It's just more.

Shipping

3 questions
How fast do you ship?

Most orders ship within 24 hours from our New York facility. Standard U.S. shipping takes 3 to 5 business days. Shipping is free on every Subscribe and Save order, and $5.99 flat on one-time orders.

Do you ship internationally?

We currently ship to the United States, including Alaska, Hawaii, and Puerto Rico. International shipping is coming in 2026.

Can I track my order?

Yes. You'll get a tracking email when your order leaves our facility, and another when it's out for delivery. Order status is also available in your account.

Subscribe and Save

3 questions
How does Subscribe and Save work?

Your first order is 50% off, then every delivery is discounted with free shipping included. Deliveries are matched to your supply, about every 45 days. Manage everything from your account, and skip, pause, or cancel anytime.

Can I cancel anytime?

Anytime. No phone calls, no retention scripts, no "are you sure?" loops. One click in your account and it's done.

Will my price ever change?

Your first order is 50% off at $24.99. After that, each delivery renews at the standard subscriber price of $36.99, with free shipping. That price stays the same for as long as you stay subscribed. If we ever need to change it, we will email you first so you can skip or cancel before your next order.

Returns and guarantee

3 questions
What's the 90 day guarantee?

Try Optibio for ninety days. If you don't feel a meaningful difference in stress, sleep, or focus, email us and we'll refund the full purchase price. No need to ship the bottle back. No retention scripts.

How do I request a refund?

Email support@optibiosupplements.com with your order number. Refunds are processed within 3 business days.

Can I return an unopened bottle?

Yes, within 60 days of delivery, for any reason. We cover return shipping.

Safety

4 questions
Are there side effects?

KSM-66® has a strong safety record at our full 600 mg daily dose. The most commonly reported effects are mild and short lived, usually drowsiness or stomach upset when taken without food. If you experience anything persistent, stop and check with your clinician.

Can I take Optibio if I'm pregnant or nursing?

We don't recommend ashwagandha during pregnancy or while nursing. Please consult your clinician.

Can I take it with prescription medication?

Ashwagandha can interact with sedatives, thyroid medication, immunosuppressants, and some blood pressure medications. If you take prescription medication, talk to your prescriber before starting.

Is it third party tested?

Every batch. We test for identity, potency, heavy metals, pesticides, residual solvents, and microbial contaminants. Certificates of analysis are available for every lot. Ask us and we'll send yours.

No matches for that one.

Try a different keyword, or just ask us directly.

Contact support

Talk to a person.

Email us, call us, or hit the chat. There's always a human at the other end. No scripts, no loops.

Questions answered? Start here

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

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

Choose Your Purchase Option

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). 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.