If you are taking the bile acid sequestrant colesevelam some drugs may not be as effective. You may need to adjust their dose or take the colesevelam four hours before or after you take these medicines:

  • Cyclosporine
  • Levothyroxine
  • Olmesartan
  • Some oral contraceptives
  • Some drugs for type 2 diabetes
  • Phenytoin
  • Warfarin

If you are taking the bile acid sequestrant colestipol, it can affect the way these drugs work. Taking colestipol four or more hours before or afterward may help:

  • Propranolol
  • Chlorothiazide and hydrochlorothiazide
  • Tetracycline
  • Furosemide
  • Penicillin G
  • Gemfibrozil
  • Digoxin and digitoxin

If you are taking the bile acid sequestrant cholestyramine with ezetimibe or fluvastatin, separate the doses by four or more hours.

Stay safe – tell your doctor what you take!