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A full 600 mg daily serving of root only KSM-66® Ashwagandha, standardized to 5% withanolides.
Supports a calmer response to everyday stress.†
→ 02Supports healthy sleep and an easier wind down.†
→ 03Supports steady focus through the afternoon.†
→ 04Supports emotional balance and a steadier baseline.†
→ 05Supports strength, endurance and recovery.†
→ 06One daily adaptogen for busy weeks and travel.†
→
Once a day with water. No powders, no timing windows, nothing to learn.
A full 600 mg of KSM-66® ashwagandha root extract. Nothing else to decode on the label.
Subscribe and it arrives every 45 days, with free shipping. Pause or cancel anytime.
WHAT IS IN EVERY BOTTLE
600 mg per serving
5% withanolides
90 vegan capsules
1 active ingredient
One active ingredient, clearly labeled. Third party tested for purity and potency.
See the label
The ingredient name is only the start. What matters is the extract, the dose, the testing, and the standard behind every bottle.
| Feature | Optibio KSM-66® | Unbranded ashwagandha powder |
|---|---|---|
| Extract pedigree | Branded KSM-66®, root only | No named extract |
| Extract source | Root only | Plant part not stated |
| Active standard | 5% withanolides | Withanolide content not stated |
| Extraction method | Patented, solvent free | Extraction method not stated |
| Quality testing | Third party tested | Test results not published |
| Manufacturing | USA, GMP certified | Facility not stated |
★★★★★ 4.75 out of 5 from 148 reviews
90 vegan capsules, a 45 day supply. Two capsules a day with food. Supports a calmer stress response, healthy sleep, and steady focus.†
Choose your plan
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.
Clinically studied ashwagandha root extract.
Made using the root, not leaves.
Per 2 capsule serving.
Standardized for consistency.
Some reviewers received a free sample. Reviews are their own words and were not edited.
I have been using it for about a month. I did not notice much during the first week, but with regular use it has become a product I plan to keep in my routine.
Marcus, July 2026, collected from another provider
That’s why you get 90 days. Full refund, keep the bottle.
I have been taking this consistently for a few weeks. I like that the capsules are easy to swallow and it has been simple to add to my evening routine.
Jessica, July 2026, collected from another provider
I started two weeks ago and am already started feeling different.
Mary, July 2026, collected from another provider
The bottle arrived well sealed and the capsules do not have a strong smell or aftertaste. It is still early, but so far I am happy with the product.
Daniel, July 2026, collected from another provider
I have tried a few ashwagandha supplements and this one is easier on my stomach than some others. The serving size is convenient and the packaging feels high quality.
Nicole, July 2026, collected from another provider
The capsules are clean, easy to take, and the label clearly explains what is included. Shipping was quick and everything arrived in good condition.
Amanda, July 2026, collected from another provider
KSM-66® supports your body's natural stress response.†
No complicated protocols. No timing windows. Just 2 capsules with water after breakfast or dinner, and make it part of your daily routine.
KSM-66® sourced from certified, ethical partners with full traceability.
Independently third party tested for purity, potency, and contaminants.
Manufactured in a USA cGMP certified facility under strict quality standards.
No artificial colors, flavors, binders, or unnecessary additives.
Ethical sourcing, solvent free extraction, and responsible manufacturing.
Everything you need to know about KSM-66®, Optibio, and what to expect.
KSM-66® is a root only ashwagandha extract, made exclusively from the root (not the leaf), using a patented, solvent free extraction process that preserves the full spectrum of active withanolides. Ashwagandha products vary widely in extract type, plant part and standardization. KSM-66® is a named, traceable extract standardized to 5% withanolides, rather than an unnamed powder with no stated withanolide content.
Ashwagandha is an adaptogen, a class of herbs traditionally used to help the body adapt to everyday stress. KSM-66® supports a healthy stress response so you can wind down naturally.† It is not a sedative and not a stimulant, and it doesn't mask how you feel.
Yes. KSM-66® at a 600mg daily serving is well tolerated and is commonly taken daily over long periods. The most common side effect in a small number of people is mild gastrointestinal sensitivity, taking it with food resolves this in almost all cases. If you are pregnant, nursing, or taking prescription medication (particularly immunosuppressants or thyroid medication), consult your physician before starting.
Ashwagandha products vary widely in extract type, serving size, plant part and standardization. Three things define Optibio. First, we use KSM-66®, a patented root only ashwagandha extract, rather than an unnamed powder. Second, we use a full 600mg daily serving. Third, it is third party tested for purity and potency, and manufactured in a USA GMP certified facility. We don't cut corners on the ingredient, the dose, or the manufacturing standard. See how specific named brands compare in our buyer's guide.
Ashwagandha is an adaptogen that works gradually with consistent daily use rather than like a stimulant. This is why we recommend starting with a subscription, it gives you enough time to experience the full benefit and make a fair assessment. The 90 day money back guarantee exists precisely because we know results take time and we want you to have the full window to judge. Read the full timeline guide.
You get a full refund, no questions, no forms, no hassle. Email us at support@optibiosupplements.com within 90 days of your purchase and we will refund your entire order. We take on the risk so you don't have to. We're confident in the science behind KSM-66® and in our product, but we also know that no supplement works identically for every person, and we believe you should be able to try it without financial risk.
A full 600 mg daily serving of KSM-66® root extract, in one simple daily routine.
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