
Jarrow Formulas Ashwagandha Capsules, 300 mg Supplement Supports Normalized Resistance to Mental and Physical Stress, 120 Veggie Capsules, 60 Day Supply
$0.30/serving
Price verified Apr 22, 2026
Not evaluated by the FDA · Individual results may vary · Consult a healthcare provider before use
Our verdict
300mg (5% withanolides), 2 caps = 600mg of KSM-66 Ashwagandha Root Extract per veggie capsule from Jarrow Formulas. Best for stress and cortisol reduction.
Why we recommend this
Uses the gold-standard KSM-66 extract at the full clinical dose of 600mg. Jarrow Formulas is a trusted brand with over 45 years in the supplement industry.
Check for interactions
Already taking other supplements or prescription medications? Add them below to check for documented interactions, severity, and clinical guidance.
Our database currently documents 137+ supplement and drug-category interaction pairs. Combinations not flagged here may still interact — always consult your healthcare provider before combining supplements, especially with prescription medications.
What to watch out for
Higher price point than generic root powder extracts.
Dose & form
- Serving
- 300mg (5% withanolides), 2 caps = 600mg
- Form
- Veggie Capsule
- Clinical range
- 300-600mg standardized root extract daily
- Dose adequacy
- Therapeutic
- Supply
- 60 servings · $0.30/serving
- UPC
- 790011220145
Who it's best for
Stress and cortisol reduction
Who should skip it
Those wanting a single-capsule full dose.
Pros
- Gold-standard KSM-66 extract
- Full clinical dose (600mg from 2 caps)
- 45+ year trusted brand
- 5% withanolide standardization
Cons
- Requires 2 capsules for full dose
- Higher price than generic powders
What customers say
4.5★ across 1,933 Amazon reviews. The most common questions from shoppers: jarrow formulas ashwagandha safe to take daily, i take jarrow ashwagandha with other medications, and jarrow formulas ashwagandha safe during pregnancy. Full answers in the FAQ below.
Frequently Asked Questions
What is the clinical dose for KSM-66 Ashwagandha Root Extract?
What is the clinical dose for KSM-66 Ashwagandha Root Extract?
Clinical trials typically use 300-600mg standardized root extract daily. Jarrow Formulas Ashwagandha 300mg delivers 300mg (5% withanolides), 2 caps = 600mg, which we classify as Therapeutic relative to that range.
How does Jarrow Formulas Ashwagandha 300mg compare to similar Veggie Capsule?
How does Jarrow Formulas Ashwagandha 300mg compare to similar Veggie Capsule?
See the "Also consider" section below for two alternatives. Choose based on form preference (Veggie Capsule vs alternatives), dose adequacy, and third-party testing.
Is Jarrow Formulas Ashwagandha 300mg third-party tested?
Is Jarrow Formulas Ashwagandha 300mg third-party tested?
Yes — Third-Party Tested. Third-party testing verifies ingredient identity and label accuracy.
Does this work with Amazon Subscribe & Save?
Does this work with Amazon Subscribe & Save?
Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.
Is Jarrow Formulas Ashwagandha safe to take daily?
Is Jarrow Formulas Ashwagandha safe to take daily?
Jarrow Formulas Ashwagandha using KSM-66 extract has been studied in clinical trials lasting up to 12 weeks with daily use. It is generally well-tolerated, though mild GI upset or drowsiness may occur in some individuals. Consult your doctor if you have autoimmune conditions or are pregnant.
Can I take Jarrow Ashwagandha with other medications?
Can I take Jarrow Ashwagandha with other medications?
Ashwagandha may interact with thyroid medications, immunosuppressants, and sedatives. If you are taking prescription medications, consult your healthcare provider before adding this supplement. KSM-66 has been studied alongside standard therapies in some trials without adverse interactions.
Is Jarrow Formulas Ashwagandha safe during pregnancy?
Is Jarrow Formulas Ashwagandha safe during pregnancy?
Ashwagandha is not recommended during pregnancy as it may have uterine-stimulating properties. Jarrow Formulas recommends consulting a healthcare professional before use during pregnancy or nursing. There are no clinical trials evaluating ashwagandha safety in pregnant women.
Are there side effects from Jarrow Formulas Ashwagandha?
Are there side effects from Jarrow Formulas Ashwagandha?
The most commonly reported side effects are mild drowsiness, stomach upset, and diarrhea. These typically resolve within a few days of consistent use. KSM-66 extract has a strong safety profile in published clinical trials at the recommended 600mg daily dose.
Does Jarrow Ashwagandha contain heavy metals?
Does Jarrow Ashwagandha contain heavy metals?
Jarrow Formulas conducts third-party testing on their products including heavy metal screening. Ashwagandha is a root crop that can accumulate heavy metals from soil, making third-party testing especially important. Check Jarrow Formulas website for current certificates of analysis.
How many Jarrow Ashwagandha capsules should I take per day?
How many Jarrow Ashwagandha capsules should I take per day?
The recommended dose is 1-2 capsules daily, providing 300-600mg of KSM-66 extract. Most clinical trials used 600mg daily (2 capsules). Start with 1 capsule and increase to 2 if well-tolerated after one week.
Also consider
Part of this guide
Best Ashwagandha Supplements→

