All of the following reduce T4 absorption except: (A) Metformin, (B) Iron salts, (C) Raloxifen, (D) Colsevelam
Answer is A. Refer Goodman Gilman 12/e p1136 Absorption of T4 is reduced by Antacids Bile acids binding agents Calcium carbonate Iron salts Proton pump inhibitors. Raloxifen Sucralfate