In many cases, herbs are a safe and effective alternative to pharmaceuticals. But that doesn't necessarily mean they are harmless. They can interfere with prescription drugs as well as with other herbs. More isn't always better, and not every herb is for every person. The key is to make sure your supplements are helping—not hurting.

The following books offer more information about herb depletions and drug interactions.

  • A-Z Guide to Drug-Herb-Vitamin Interactions (Prima Publishing, 1999), by Schuyler W. Lininger Jr., et al.
  • Drug-Induced Nutrient Depletion Handbook (Lexi-Comp Inc., 1999), by Ross Pelton, et al.
  • Herb Contraindications and Drug Interactions (Eclectic Medical Publications, 1997), by Francis Brinker, et al.
  • The Natural Pharmacist: Drug-Herb-Vitamin Interactions Bible (Prima Publishing, 2001), by Steven Bratman, M.D.