I stumbled across this list of drugs that deplete certain nutrients and thought it might be worthwhile to post. http://www.healthdesk.com/blog/825633 Nutrient Depleting Drugs The damage takes place slowly, over time, and it can be addressed, but only if you know about it. Here is a partial list of medications that can deplete your body of essential nutrients: ACE inhibitors deplete zinc. Acid reducers deplete B12 and calcium. Antibiotics deplete Lactobacillus acidophilus, Bifidobacteria bifidum, and other good bacteria; vitamins B1, B2, B3, B6, B12, and K; biotin; and inositol. Aspirin depletes folic acid, iron, potassium, and vitamin C. Benzodiazepines deplete vitamin B12 and CoQ10. Beta-blockers deplete CoQ10. Corticosteroids deplete calcium, folic acid, magnesium, potassium, selenium, vitamin C, vitamin D, and zinc. Estrogens deplete magnesium, omega-3 fatty acids, vitamin B1, and zinc. Famotidine and other H2-blocking drugs deplete calcium, folic acid, iron, vitamin B12, vitamin D, and zinc. Glucophage depletes vitamin B12. NSAIDS deplete folic acid. Oral contraceptives deplete vitamin C, vitamin B2, folic acid, magnesium, vitamin B6, vitamin B12, and zinc. Like they say, this is only a partial list. I'm wondering if anyone has access to the book mentioned in the article...?