St. John's Wort Extract

product on market Capsule Swanson Superior Herbs 🟢 Safety: 100/100
Brand: Swanson Superior Herbs
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • Limited research evidence available for ingredients
B Label Compliance Grade

Product Label

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Label Data

1 Capsule(s) Serving Size
Botanical Product Type
0% Evidence Coverage

Supplement Facts — Evidence Check

300 mg
📊 Market median: 300.0mg (240 products) 📚 11 studies — no high-quality reviews
This product: 300mg

Other Ingredients

Microcrystalline Cellulose Gelatin Calcium Palmitate

Label Claims — Verification

❓ All Other
All Other (99% of products) Structure/Function (78% of products) Nutrient (2% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested Use: As a dietary supplement, take one capsule one to three times per day with water or as recommended by your healthcare provider.

⚠️ Warnings & Precautions

Do not use if seal is broken.

Keep out of reach of children.

Warning: Not recommended for pregnant or lactating women. If you are taking a prescription medication, including birth control pills, consult a healthcare professional before taking this product.

This product may cause the skin and eyes to become photosensitive. Avoid lengthy exposure to natural sunlight or tanning salon lights. Discontinue use if reddening or inflammation of the skin develops.

Additional Information

Guaranteed purity & potency

Store in a cool, dry place.

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

SWH278 Rev 0 04 11 17

Product Details

UPC / SKU 0 87614 14278 4
DSLD Entry Date 2018-04-25
Product Type Botanical
Form Capsule
Brand Swanson Superior Herbs
DSLD ID 175733
Data Updated 2026-04-11

Research Evidence

43 Research Sources
48 Avg Quality Score
16 Meta Analysis
14 Systematic Review
7 Rct
4 Regulatory Source
1 Clinical Trial
1 Openfda Safety
B St John's wort for major depression
Systematic Review The Cochrane database of systematic reviews 2008
PubMed DOI
B Clinical use of Hypericum perforatum (St John's wort) in depression: A meta-analysis
Meta Analysis Journal of affective disorders 2017
PubMed DOI
B A systematic review of St. John's wort for major depressive disorder
Meta Analysis Systematic reviews 2016
PubMed DOI
B St John's wort for depression
Systematic Review The Cochrane database of systematic reviews 2000
PubMed
B Efficacy of Pharmacological Interventions in Milder Depression: A Systematic Review and Meta-Analysis
Meta Analysis Neuropsychopharmacology reports 2025
PubMed DOI
B St John's wort for depression
Meta Analysis The Cochrane database of systematic reviews 2005
PubMed
C St John's wort for depression: meta-analysis of randomised controlled trials
Meta Analysis The British journal of psychiatry : the journal of mental science 2005
PubMed
C The effect of Hypericum perforatum on postmenopausal symptoms and depression: A randomized controlled trial
Rct Complementary therapies in medicine 2019
PubMed DOI
C Hypericum extract versus imipramine or placebo in patients with moderate depression: randomised multicentre study of treatment for eight weeks
Rct BMJ (Clinical research ed.) 1999
PubMed
C Hypericum perforatum as a cognitive enhancer in rodents: A meta-analysis
Meta Analysis Scientific reports 2016
PubMed DOI
View all evidence for St Johns Wort →

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