Saint John's Wort

Suggested Use

Shake well before use. Adults take up to 30 drops (1 mL; one full squeeze of the dropper bulb) in 3-4 fl. oz. of juice or water up to 4 times a day.

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 (115)

  Vitamin & supplements store

  3831 Edwards Rd Ste 500, Cincinnati, OH 45209

  Directions(513) 351-1376

• Mother Earth Vitamins and More

  4.8 (46)

  Alternative medicine practitioner

  5158 Pleasant Ave, Fairfield, OH 45014

  Directions(513) 894-1131

• Spring Street Vitamins

  4.8 (31)

  Vitamin & supplements store

  3316 Princeton Rd, Fairfield, OH 45011

  Directions(513) 737-4053

• G & Shirleys Vitamin & Herb Shop Inc

  4.5 (11)

  Vitamin & supplements store

  5844 Hamilton Ave, Cincinnati, OH 45224

  Directions(513) 648-0600

• The Vitamin Shoppe

  4.4 (156)

  Vitamin & supplements store

  5 E Kemper Rd, Cincinnati, OH 45246

  Directions(513) 671-0021

• GNC

  4.8 (85)

  Vitamin & supplements store

  9850 Colerain Ave, Cincinnati, OH 45251

  Directions(513) 741-9200

• The Vitamin Shoppe

  4.4 (102)

  Vitamin & supplements store

  9950 Waterstone Blvd, Cincinnati, OH 45249

  Directions(513) 583-0148

• Assaying the variation in secondary metabolites of St. John's wort for its better use as an antibiotic

  GS Nikolic, SZ Zlatkovic - J Med Plants Res, 2010 - academicjournals.org

  … St. John’s wort is a medicinal herb widely spread in Europe, Asia and North Africa. In the … John’s wort, an antidepressant herbal remedy, may pharmacodynamically interact with specific …

  201020 citations

• St John's Wort induces intestinal P‐glycoprotein/MDR1 and intestinal and hepatic CYP3A4

  D Dürr, B Stieger, GA Kullak‐Ublick… - Clinical …, 2000 - Wiley Online Library

  … This study provides the first direct in vivo evidence that St John’s Wort, a naturally growing herb that is sold as a food supplement in the United States and as over-thecounter medicine …

  2000847 citations

• Herbs and Healers from the Ancient Mediterranean through the Medieval West: Essays in Honor of John M. Riddle

  A Touwaide - 2012 - books.google.com

  … The study of Saint John’s Wort leads us to the fourth stage in our journey with John Riddle … Riddle’s journey into medieval pharmaceutical literature—which was almost a terra incognita …

  20122 citations

• Protective role of St. John's wort and its components hyperforin and hypericin against diabetes through inhibition of inflammatory signaling: Evidence from in …

  M Novelli, P Masiello, P Beffy, M Menegazzi - International journal of …, 2020 - mdpi.com

  … (St. John’s wort, SJW) and its main active ingredients firstly in representative pathological situations on inflammatory basis and then in pancreatic β cells and in obese or diabetic animal …

  202074 citations

• Herb-drug interactions: focus on metabolic enzymes and transporters

  YH Choi, YW Chin, YG Kim - Archives of pharmacal research, 2011 - Springer

  … palmetto, garlic milk thistle, ginseng and St. John’s wort) on metabolic enzymes and transporters affecting absorption and disposition of herbal products are summarized. The source of …

  2011110 citations

• Standardised herbal extracts: are they always necessary? A herbalist's perspective

  M Tierra - Australian Journal of Medical Herbalism, 1999 - search.informit.org

  … Today St John's wort standardised … herb for the pharmaceutical, only using St John's wort may not fully address the patient's issues and fails to reflect the high standards ofclinical herbal …

  19992 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-08-22. DSLD Label ID: 325355. 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.