Steady energy, no crash.
One active ingredient, clearly labeled. KSM-66® ashwagandha, 600mg, studied to support strength, endurance, and daily vitality. Not a stimulant. Results vary.
Choose how you start
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.*
Key Benefits
- Supports stress resilience and calm*
- Supports sleep and recovery*
- Supports focus and clarity*
- Supports the body's natural stress response*
Per serving
Capsules
Day supply
Root extract
Why OptiBio? +
Benefits +
How to Use +
Ingredients +
Supplement Facts +
Science & Clinical Ingredient +
FAQs +
One active ingredient, clearly labeled
No kitchen sink blends
Just KSM-66® ashwagandha at 600mg, the dose actually studied.
Pop it, done
Two small capsules a day. No pre workout jitters.
Daily, not a stimulant
Studied to support endurance and steady energy without the jitters. Results vary.
Tested, then shown to you
Every batch is third party tested for identity, potency, heavy metals, and microbes. Made in a GMP certified US facility.
Why one active ingredient wins
| Optibio | Typical ashwagandha | |
|---|---|---|
| Ingredients | One: KSM-66® root only | Proprietary blends |
| Dose | 600mg, the studied dose | Often underdosed |
| Standardized | 5% withanolides | Often not |
| Testing | Third party tested, every batch | Rarely public |
| Additives | No dyes, no added sugar | Dyes, sweeteners common |
Any last questions?
How fast will I feel it?+
Ashwagandha builds up over time. Give it a full 30 days of daily use. Results vary.
Is this like a pre workout?+
No. It is not a stimulant. It is studied to support endurance and steady daily energy, without the crash. Results vary.
What is actually in it?+
KSM-66® is a root only ashwagandha extract standardized to 5% withanolides. We keep our claims modest: with consistent daily use it supports steady daily energy and endurance, without stimulants. Results vary.
Is it safe to take every day?+
Ashwagandha is made for a daily habit. If you are pregnant, nursing, on medication, or have a thyroid condition, talk to your doctor first.
What is your guarantee?+
90 days, money back. If it is not for you, we refund you, no drama.
Your free energy plan + 50% off.
Tell us where to send your goal matched routine and 50% off your first bottle. No code needed, it applies automatically when you subscribe.
More in the tank starts here.
The full 600 mg dose of KSM-66® Ashwagandha. Subscribe and your first bottle is 50% off. Skip or cancel anytime.
Ashwagandha for energy, answered.
Does ashwagandha help athletic performance?
When should athletes take ashwagandha?
Is KSM-66® ashwagandha banned in sport?
Keep learning
Evidence-based guides on KSM-66® ashwagandha. Educational information, not medical advice.
- How to read ashwagandha dosage →
- The research behind KSM-66® →
- Morning or night: when to take it →
- Is it safe to take ashwagandha every day? →