Klaire Labs/SFI Health

Ashwagandha Extract, 60 Capsules

Klaire Labs' Ashwagandha Extract delivers a standardized root extract of Withania somnifera, a botanical adaptogen used in Ayurvedic practice to support the body's response to stress, promote balanced energy levels, and support healthy cortisol metabolism.

4.5 across 8 sources

May be a fit for

  • Adults seeking ashwagandha extract to support a calm stress response
  • Individuals using ashwagandha to help maintain healthy cortisol balance
  • Practitioners protocols requiring a pure, well-tolerated ashwagandha extract form
$20.99

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CapsulesFormat
60 CapsulesPack size
The essentials

A closer look.

Klaire Labs' Ashwagandha Extract delivers a standardized root extract of Withania somnifera, a botanical adaptogen used in Ayurvedic practice to support the body's response to stress, promote balanced energy levels, and support healthy cortisol metabolism. Formulated by Klaire Labs, a practitioner-trusted brand with a long-standing focus on purity and hypoallergenic standards, this product is suited for adults seeking adaptogenic support without unnecessary excipients.

Why It's Worth Considering: Klaire Labs' commitment to clean formulation, minimal fillers, rigorous quality standards, makes this a reliable option for clinicians and health-conscious individuals who prioritize ingredient integrity in their supplement regimen.

The Apotheca perspective

50+ signals. A clearer standard.

Our curation and trust scoring bring together manufacturing, testing, research, practitioner insight and reviews from across the web.

91OUT OF 100
Manufacturing9797
Lab verification7070
Transparency7070

Our score is an editorial assessment, not a product certification or a guarantee of results.

Inside the formula

Product details

Who it may suit

May be a fit for

  • Adults seeking ashwagandha extract to support a calm stress response
  • Individuals using ashwagandha to help maintain healthy cortisol balance
  • Practitioners protocols requiring a pure, well-tolerated ashwagandha extract form
  • Those supporting sustained mental focus and physical stamina with ashwagandha

Considerations

  • Autoimmune conditions (may stimulate immune activity)
  • Hyperthyroidism (ashwagandha may increase thyroid hormones)
  • Pregnancy and breastfeeding
  • Taking sedatives or thyroid medications (additive effects)
Compatibility & interactions

Works Well With

Magnesium
Both support relaxation and stress
CoQ10
Both support cardiovascular health
Turmeric
Complementary anti-inflammatory pathways
Vitamin D3
Both fat-soluble, support immunity

Take Separately From

No significant interactions identified. Always consult your healthcare provider.

What to expect over time
Week 1–2

Stress Response

Reduced cortisol reactivity to daily stressors

Week 2–4

Sleep & Calm

Improved sleep quality and baseline anxiety reduction

Week 4–8

Performance

Measurable strength and endurance gains

Week 8–12

Full Adaptation

Sustained cortisol reduction of 20-30%

Based on clinical trials using KSM-66 and Sensoril ashwagandha extracts at 300-600mg/day.

Compare the options

Compare Ashwagandha Extracts

KSM-66 vs Sensoril vs Generic

FeatureKSM-66 (root)Sensoril (root+leaf)Generic Extract
Withanolide %5% standardized10% standardized1.5-2.5% (varies)
Best ForPerformance, testosterone, cortisolAnxiety, sleep, relaxationBudget option
Research22+ clinical trials11+ clinical trialsLimited
Quality ControlPatented, GMP certifiedPatented, standardizedVaries widely
Explore complementary products
From across the web

Real reviews. A wider perspective.

Customer reviews, social conversations and expert insights, with every source in view.

4.5/5Aggregate source rating
Marketplaces & brand websites
Amazon, iHerb and direct brand reviews
Social & community
Reddit, X, Instagram and TikTok
Video & creators
YouTube and creator perspectives

Coverage varies by product and brand.

52013 product and brand ratings and mentions across 8 sources.

Explore the source sentiment summary

Ashwagandha shows credible stress and sleep benefits backed by RCTs, but significant side effect warnings and contraindications temper enthusiasm.

This summary includes broader brand discussion. Individual experiences are not evidence of product effectiveness.

Good to know

A few useful answers.

Research & further reading

More category questions

How long does ashwagandha take to work?

Most people notice reduced stress reactivity within 1-2 weeks. Sleep improvements by week 2-3. Full cortisol-lowering and performance benefits take 8-12 weeks of consistent daily use. It's an adaptogen — benefits compound over time, not a one-dose effect.

What is the difference between KSM-66 and Sensoril?

KSM-66 uses only the root and is standardized to 5% withanolides. It's better studied for performance, testosterone, and general stress. Sensoril uses root and leaf, standardized to 10% withanolides, and is more potent for anxiety and sleep. Both are clinically validated — KSM-66 for daytime, Sensoril for evening use.

Can ashwagandha increase testosterone?

Yes, in men with suboptimal levels. Clinical trials show KSM-66 at 600mg/day increased testosterone by 15-17% and improved sperm quality in infertile men. In men with already-normal testosterone, the effect is modest. It works primarily by reducing cortisol (which suppresses testosterone production).

Should I cycle ashwagandha?

There's no clinical evidence requiring cycling, but many practitioners recommend 8-12 weeks on, 2-4 weeks off to maintain sensitivity. If you notice the effects plateauing, a 2-week break can restore responsiveness. Some people take it continuously for years without issue.

Can I take ashwagandha with coffee?

Yes — they work through different mechanisms. Ashwagandha calms the stress response while caffeine increases alertness. Many people find the combination produces focused energy without jitteriness. Take ashwagandha with breakfast alongside your coffee.

Is ashwagandha safe for women?

Yes — ashwagandha is safe and beneficial for women. It reduces cortisol, improves thyroid function, supports fertility, and enhances sleep. It may mildly increase testosterone, which in women supports libido and energy without masculinizing effects. Avoid during pregnancy and breastfeeding.

Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.

Klaire Labs/SFI Health - Ashwagandha Extract, 60 Capsules Klaire Labs/SFI Health

Apotheca quality score

91/100

The overall score combines several sources of information. The individual dimensions below show where those signals are stronger or more limited; they are not a simple average of the overall score.

Manufacturing9797
Lab verification7070
Review consensus97.597.5
Practitioner signals45.045.0
Community signals5757
Transparency7070
See available brand signals
✓
Third-party lab tested (heavy metals, contaminants)Pass
✓
GMP-certified manufacturing by Klaire Labs/SFI HealthCertified
✓
Premium ingredient sourcing with bioavailable formsHigh
✓
Clean FDA regulatory recordNo issues
✓
Authorized distribution channel verifiedDirect

Our score is an editorial assessment, not a product certification or a guarantee of results.

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