Standardized St. John's Wort 300 mg Herbal Extractnone

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1–2 Capsule(s) · 1 per day

Not Present

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  Swanson Vitamins St. John's Wort Extract

  iHerb4.7(282)

  $11.79
• 

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

  Puritan's Pride4.8(115)

  $10.91
• 

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

  Vitacost.com4.6(194)

  $11.88
• 

  Nature's Truth St. John's Wort

  Walmart4.8(41)

  $8.48
• 

  Spring Valley St. John's Herbal Supplement Capsules

  Walmart4.6(119)

  $11.82
• 

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

  GNC4.4(36)

  $29.99
• 

  Nature's Way St John's Wort Standardized

  Professional Supplement Center4.4(122)

  $18.99
• 

  St John's Wort 300mg

  Walmart - Carlyle Nutritionals, LLC5.0(1)

  $9.99

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• Medical attributes of St. John's wort (Hypericum perforatum)

  KM Klemow, E Bilbow, D Grasso, K Jones… - Oxidative Stress and …, 2004 - taylorfrancis.com

  … monographs recommend 900 mg of standardized extract per day (7, … The main antibacterial principle was determined to be … taken as dietary supplements may lead to other interactions. …

  2004234 citations

• Effectiveness of St John's wort in major depression: a randomized controlled trial

  RC Shelton, MB Keller, A Gelenberg, DL Dunner… - Jama, 2001 - jamanetwork.com

  … Alternative health care approaches such as herbs are used … tolerability of a standardized extract of St John's wort for the … by random coefficient analyses (treatment main effect: F 1,98 = …

  2001677 citations

• The extent of induction of CYP3A by St. John's wort varies among products and is linked to hyperforin dose

  SC Mueller, J Majcher-Peszynska, B Uehleke… - European journal of …, 2006 - Springer

  … Since SJW products vary in the amount of HYF and other main … as over-the-counter drugs or dietary supplements. Like other … used for standardization purposes, the active principle of St. …

  2006164 citations

• 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

  … were standardized to 0.3% HP content, as claimed on the labels. One brand contained extra-strength SJW herb extract … Simple procedures for methanol extraction of solid products or …

  200240 citations

• St John's wort (Hypericum perforatum L.): a review of its chemistry, pharmacology and clinical properties

  J Barnes, LA Anderson… - Journal of pharmacy and …, 2001 - Wiley Online Library

  … subjects who received vitamin E with St John’s wort, compared with … of the main reasons for consumers’ use of St John’s wort rather … St John’s wort products are usually standardised on …

  20011,226 citations

• Lessons learned from herbal medicinal products: the example of St. John's wort

  A Nahrstedt, V Butterweck - Journal of Natural Products, 2010 - ACS Publications

  … on the market as botanical dietary supplements. More than 50 … to the main components mentioned above, some plant acids … the mechanisms of action of a standardized H. perforatum …

  2010222 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-05-22. DSLD Label ID: 250354. 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.