St. John's Wort
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| St. John's Wort extract | 300 mg |
Certifications & Testing
Other Ingredients
Hypromellose, Stearic Acid, Silicon Dioxide
Recommended Use
Suggested Usage: Take 1 capsule 3 times daily, preferably with food.
Warnings
Caution: For adults only. Do not exceed 3 capsules daily, unless directed by a healthcare professional. Larger amounts may contribute to photosensitizing reactions (skin reddening) in the presence of strong sunlight or tanning beds. St. John's Wort is known to interact with antidepressants, oral contraceptives, immunosuppressants, anticoagulants, anti-seizure, chemotherapeutic agents, and other pr
Frequently Asked Questions
What is NOW Foods St. John's Wort's Formulate score?
NOW Foods St. John's Wort scores 89 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NOW Foods St. John's Wort worth it?
NOW Foods St. John's Wort scores 89/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in NOW Foods St. John's Wort?
Each serving contains St. John's Wort extract (300 mg). Serving size: 1 Veg Capsule(s). 100 servings per container.
How do I take st. john's wort?
Suggested Usage: Take 1 capsule 3 times daily, preferably with food.
Who makes St. John's Wort?
St. John's Wort is made by NOW Foods. See Formulate's full grade and product lineup for NOW Foods on its brand page.
Is NOW Foods St. John's Wort third-party tested?
NOW Foods lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.