St. John's Wort

St. John’s Wort powder

UNII
UFH8805FKA
Products
19
NIH LiverTox — hepatotoxicity
Category D · Possible cause
About LiverTox →

LiverTox Category D. Few case reports of hepatitis; causality uncertain. Major drug-interaction concern (CYP3A4 induction) — can reduce levels of warfarin, oral contraceptives, immunosuppressants, HIV antivirals.

LiverTox record (NIH NCBI Bookshelf) →
Label dose distribution · 18 labeled products
Min
15 mg
Typical
282.778 mg
Max
1 g
Other forms of St. John's Wort

25 sibling forms

Distinct chemical forms sharing the same parent nutrient. Different UNIIs, different bioavailability, different effects — never collapsed.

Top brands carrying St. John’s Wort powder

15 brands rolled up

Products containing St. John’s Wort powder

19 in catalog