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
What people take Optibio ashwagandha capsules for
01
Stress & Calm
Supports a calmer response to everyday stress.†
02Sleep & Recovery
Supports healthy sleep and an easier wind down.†
03Focus & Clarity
Supports steady focus through the afternoon.†
04Mood
Supports emotional balance and a steadier baseline.†
05Energy & Performance
Supports strength, endurance and recovery.†
06Daily Resilience
One daily adaptogen for busy weeks and travel.†
We made a daily routine ridiculously simple.
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Two capsules
Once a day with water. No powders, no timing windows, nothing to learn.
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One active ingredient
A full 600 mg of KSM-66® ashwagandha root extract. Nothing else to decode on the label.
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It shows up for you
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 labelNot all ashwagandha is the same.
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 |
KSM-66® Ashwagandha 600mg
90 vegan capsules, a 45 day supply. Two capsules a day with food. Supports a calmer stress response, healthy sleep, and steady focus.†
- Full 600mg serving, no proprietary blend
- Root only KSM-66®, standardized to 5% withanolides
- Third party tested, made in a GMP certified facility
Choose your plan
90 day guaranteeThird party testedSecure checkout
Scroll to discover
Inside every Optibio capsule.
KSM-66®
Clinically studied ashwagandha root extract.
Root only
Made using the root, not leaves.
600 mg
Per 2 capsule serving.
5% withanolides
Standardized for consistency.
Keep scrolling
4.75 out of 5 across 148 reviews
Some reviewers received a free sample. Reviews are their own words and were not edited.
I started two weeks ago and am already started feeling different.
Mary, July 2026, collected from another provider
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
One root, remarkable range
One active ingredient. One daily routine.
KSM-66® supports your body's natural stress response.†
Supports a calm stress response
Supports restful sleep
Supports steady focus
Supports a steady mood
Steadier baseline
Supports a calm stress response
Supports restful sleep
Supports steady focus
Supports a steady mood
Steadier baseline
Supports daily energy
Less mental fog
Supports stress resilience
Eased everyday tension
Supports a steady stress response
Supports daily energy
Less mental fog
Supports stress resilience
Eased everyday tension
Supports a steady stress response
Supports recovery
Supports a calm baseline
Quieter mind at night
Clearer thinking
Supports daily balance
Supports recovery
Supports a calm baseline
Quieter mind at night
Clearer thinking
Supports daily balance
How to take it
Two capsules. Once a day. That's it.
No complicated protocols. No timing windows. Just 2 capsules with water after breakfast or dinner, and make it part of your daily routine.
1
Take 2 capsules
With a full glass of water
2
Once daily
After breakfast or dinner, your choice
3
Stay consistent
Individual experiences vary. This is not a promise of results.
4
Notice how you feel
Individual experiences vary
2
capsules
once daily
once daily
Premium Ingredients
KSM-66® sourced from certified, ethical partners with full traceability.
Third Party Tested
Independently third party tested for purity, potency, and contaminants.
Made in a cGMP Facility
Manufactured in a USA cGMP certified facility under strict quality standards.
Ingredients listed on the label
No artificial colors, flavors, binders, or unnecessary additives.
Sustainable
Ethical sourcing, solvent free extraction, and responsible manufacturing.
Common questions
Questions before you start?
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.
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