American ginseng and St. John's wort might DECREASE warfarin's anticoagulant effects

New research suggests that American ginseng and St. John's wort might DECREASE warfarin's anticoagulant effects.

Ginseng and many other herbs have antiplatelet effects and therefore were thought to prolong bleeding.

But American ginseng (Panax quinquefolius) and St. John's wort (Hypericum perforatum) seem to REDUCE warfarin's efficacy...possibly by increasing warfarin metabolism.

Get concise advice on drug therapy, plus unlimited access to CE

Pharmacist's Letter includes:

  • 12 issues every year, with brief articles about new meds and hot topics
  • 300+ CE courses, including the popular CE-in-the-Letter
  • Quick reference drug comparison charts
  • Access to the entire archive

Already a subscriber? Log in

Volume pricing available. Get a quote