Coffee Joins List of Things that Interfere with Thyroid Meds

THE LIST (these items all proven to decrease GI uptake of oral thyroid hormone medications)
coffee-->decreases absorption by about 1/3-->vicious cycle
antacids containing aluminum hydroxide (this is also in the anthrax vaccine)
ferrous sulfate
calcium carbonate
soy protein shakes
raloxifene/evista (pharm for osteoporosis)
chromium picolinate (supp for diabetics)

http://www.denvernaturopathic.com/thyroidinterference.htm
( references pulled from DenverNaturopathic link above )