St. John's Wort 0.3% Standardized Extract

Suggested Use

Recommendations: Take 2 capsules 1 to 2 times daily; or as directed by your healthcare professional.

• 

  Vital Nutrients Hypericum Extract 0.3% 300mg 90 Capsules

  Pine Street Clinic5.0(1)

  $21.90
• 

  St. John's Wort 0.3% Standardized Extract

  Pure Prescriptions5.0(1)

  $22.99
• 

  Swanson Vitamins St. John's Wort Extract

  Swanson Health Products4.7(282)

  $7.69Lowest
• 

  Puritan's Pride St. John's Wort Standardized Extract mg

  Puritan's Pride5.0(25)

  $10.91
• 

  St. John's Wort

  Curated Wellness5.0(1)

  $22.99
• 

  Nature's Way St John's Wort

  Swanson Health Products4.4(119)

  $18.49
• 

  St John's Wort

  Toniiq4.6(33)

  $19.97
• 

  Solaray St. John's Wort

  Target4.7(42)

  $29.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• The Vitamin Shoppe

  4.6 (180)

  Vitamin & supplements store

  7508 Mall Rd, Florence, KY 41042

  Directions(859) 746-0015

• The Vitamin Shoppe

  4.6 (115)

  Vitamin & supplements store

  3831 Edwards Rd Ste 500, Cincinnati, OH 45209

  Directions(513) 351-1376

• Determination of St. John's wort components in dietary supplements and functional foods by liquid chromatography

  CYW Ang, Y Cui, HC Chang, W Luo… - Journal of AOAC …, 2002 - academic.oup.com

  … standardized to contain about 0.3% HP content. However, HP has been reported to be phototoxic in grazing animals, resulting in dermatitis of the skin on exposure to direct sunlight (4). …

  200240 citations

• Development of reference materials for dietary supplements—analytical challenges, use, limitations, and future needs.

  SA Wise, S Hosbas Coskun, HV Hayes… - Analytical & …, 2025 - openurl.ebsco.com

  … -botanical dietary supplement Standard Reference Materials (… enactment of Dietary Supplement Health and Education Act … Iodine is an essential nutrient, and the prevalence of severe …

  20256 citations

• Antioxidant activity of selected herbal plants

  A Duda-Chodak, T Tarko, M Rus - Herba polonica, 2009 - researchgate.net

  … of extracts under study was calculated using a standard … The oak bark, St John’s-wort herb and flower of hawthorn … It seems that the antioxidant activity is not the most important way of …

  200928 citations

• Current Umbrella Evidence on Nutraceuticals and Herbal Medicine for Depression in Adults: A Scoping Review

  G Tzigkounakis, J Brown… - Journal of Integrative …, 2026 - journals.sagepub.com

  … A standardized data extraction form was developed to capture systematically key … A St John’s wort-specific umbrella review would add value by consolidating overlapping meta-analyses…

  2026

• Herbal and dietary supplements for weight loss

  RG Alraei - Topics in clinical nutrition, 2010 - journals.lww.com

  … day for 12 weeks had a slight (0.3%) reduction in body weight. … Vitamin D is essential for maintaining calcium homeostasis … John's wort is known to interact with many prescription drugs …

  201031 citations

• Trace Element Uptake and Accumulation in the Medicinal Herb Hypericum perforatum L. Across Different Geolithological Settings.

  G Bonari, F Monaci, F Nannoni… - Biological Trace …, 2019 - openurl.ebsco.com

  … In this study, the concentrations of essential and non-essential … important medicinal herb Hypericum perforatum L. (… a globally important and often underestimated part of health services […

  201926 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2024-06-20. DSLD Label ID: 305164. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.