St. John's Wort Extract Extra Strength

Suggested Use

Recommendations: One tablet twice daily.

• 

  Nature's Bounty St. John's Wort 300 mg

  CVS Pharmacy4.6(192)

  $19.99
• 

  Spring Valley St. John"s Wort Capsules

  Walmart4.5(124)

  $11.82
• 

  Nature's Answer St John's Wort Young Flowering Tops

  Nature's Answer4.5(22)

  $4.99
• 

  Extra Strength St. John’s Wort 20:1 Extract, 8000 Mg Strength, 0.3%

  eBay - zazzee_naturals

  $27.97
• 

  Swanson Vitamins St. John's Wort Extract

  Swanson Health Products4.7(282)

  $7.69
• 

  Mountain Rose Herbs St John's Wort Extract Organic

  Mountain Rose Herbs4.9(8)

  $12.75
• 

  GNC Herbal Plus St. John's Wort Extract 300Mg

  GNC4.4(36)

  $29.99
• 

  Healths Harmony St. John's Wort

  Target4.7(241)

  $16.95

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.

• Planet Supplements Charlotte

  4.9 (261)

  Vitamin & supplements store

  8538 University City Blvd, Charlotte, NC 28213

  Directions(704) 548-0108

• The Vitamin Shoppe

  4.5 (198)

  Vitamin & supplements store

  243 S Kings Dr, Charlotte, NC 28204

  Directions(704) 333-2826

• NutriShop The Arboretum Charlotte NC

  4.9 (257)

  Vitamin & supplements store

  3339 Pineville-Matthews Rd, Charlotte, NC 28226

  Directions(980) 207-2929

• GNC

  3.3 (60)

  Vitamin & supplements store

  5700 University Pointe Blvd #107, Charlotte, NC 28262

  Directions(704) 594-6008

• Charlotte Vitamins and Health

  4.6 (49)

  Vitamin & supplements store

  8206 Providence Rd #1800, Charlotte, NC 28277

  Directions(704) 542-1444

• Charlotte Supplements

  4.8 (267)

  Vitamin & supplements store

  4128 South Blvd, Charlotte, NC 28209

  Directions(704) 525-6311

• GNC

  3.1 (65)

  Vitamin & supplements store

  2728 W Mallard Creek Church Rd B, Charlotte, NC 28262

  Directions(704) 510-2300

• GNC

  3.3 (36)

  Vitamin & supplements store

  8111 Concord Mills Boulevard #403, Concord, NC 28027

  Directions(704) 979-6704

• Complementary/integrative therapies that work: a review of the evidence

  B Kligler, R Teets, M Quick - American Family Physician, 2016 - aafp.org

  … brands of herbal medicines and nutritional supplements known to be of high … Medical acupuncture courses offer family physicians training in this … John's wort by Enzymatic Therapy. …

  201670 citations

• Role of herbal extracts in modulating drug metabolism: implications for pharmacokinetics, enzyme regulation, and therapeutic outcome

  A Khan, G Abdulaziz Al-Hamoud, M Amina… - Drug Metabolism …, 2026 - Taylor & Francis

  … preventive healthcare, these medicinal plants are often used as … John's Wort may have an inductive effect on CYP2C9 by … (PDF) Effects of Hypericum perforatum (St John’s wort) on the …

  20264 citations

• Molecular and biochemical characterization of an enzyme responsible for the formation of hypericin in St. John's wort (Hypericum perforatum L.)

  HP Bais, R Vepachedu, CB Lawrence… - Journal of Biological …, 2003 - jbc.org

  … , the antidepressant compound in St. John's wort, may be of medical importance in the treatment of depression, and in … Mn 2 + supplementation resulted in substantial induction of the …

  2003183 citations

• St. John's wort (Hypericum perforatum): a review of the current pharmacological, toxicological, and clinical literature

  JM Greeson, B Sanford, DA Monti - Psychopharmacology, 2001 - Springer

  … reported that Hypericum induced hepatic enzyme activity. This effect could … extract significantly induces CYP3A4 isozyme activity in healthy human subjects following a 14-day treatment …

  2001578 citations

• St. John's wort and depression: efficacy, safety and tolerability-an update

  AR Bilia, S Gallori, FF Vincieri - Life sciences, 2002 - Elsevier

  … this enzyme system. So, even if its safety has been well established, physicians should be aware that St. John's wort administration might significantly affect other prescribed medicines. …

  2002308 citations

• Effect of St John's wort dose and preparations on the pharmacokinetics of digoxin

  SC Mueller, B Uehleke, H Woehling… - Clinical …, 2004 - Wiley Online Library

  … or dietary supplements, mostly in the form of tablets, extracts, or … determined to be healthy on the basis of medical history, … determined with a microparticle enzyme immunoassay (IMx …

  2004220 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2013-09-25. DSLD Label ID: 25424. 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.