Best Ashwagandha Supplements (2025): KSM-66 vs Sensoril
Ashwagandha is the most popular adaptogen for stress and cortisol. Here’s which form to buy.
For all supplement guides, see: Best Greens Powder.
Quick Comparison
| Extract | Focus | Typical Dose |
|---|---|---|
| KSM-66 | Energy, stress, testosterone | 300-600mg/day |
| Sensoril | Relaxation, sleep, cortisol | 125-250mg/day |
KSM-66
Root-only extract with most research behind it.
- Extract type: Root only
- Withanolide content: 5%
- Research: Most studied form
- Effects: Stress reduction, energy, testosterone support
Pros
- Most clinical research
- Good for daytime use
- Supports testosterone (men)
- Consistent quality
Cons
- More expensive than generic
- May be too stimulating for some
Sensoril
Root and leaf extract with higher withanolide content.
- Extract type: Root + leaf
- Withanolide content: 10%+
- Effects: More calming, better for sleep
Pros
- More calming effects
- Better for sleep support
- Lower dose needed
Cons
- Less research than KSM-66
- May cause drowsiness
When to Use Each
| Goal | Best Choice |
|---|---|
| Stress + energy | KSM-66 |
| Sleep support | Sensoril |
| Testosterone support | KSM-66 |
| Anxiety (calming) | Sensoril |
| Workout recovery | KSM-66 |
Best Products
Best KSM-66
- Nootropics Depot KSM-66: $20-25, pure extract
- Jarrow Formulas KSM-66: $15-20, accessible
- NOW Foods Ashwagandha: $15, uses KSM-66
Best Sensoril
- Nootropics Depot Sensoril: $15-20
- Doctor’s Best Ashwagandha: $15, uses Sensoril
Avoid Generic Ashwagandha
Non-branded ashwagandha has inconsistent withanolide content. Stick with KSM-66 or Sensoril for verified potency.
Dosing
| Extract | Dose | Timing |
|---|---|---|
| KSM-66 | 300-600mg/day | Morning or with meals |
| Sensoril | 125-250mg/day | Evening or before bed |
Side Effects
Generally safe, but possible issues:
- Thyroid stimulation (avoid with hyperthyroidism)
- GI upset in some people
- Drowsiness (especially Sensoril)
- Possible interactions with sedatives
Verdict
For stress + energy: KSM-66 (300-600mg/day)
For relaxation + sleep: Sensoril (125-250mg/day)
Both are legitimate adaptogen extracts. Choice depends on your goals.
For more cognitive enhancement, see: Best Nootropics for Beginners.