-alendronate
-antacids
-cefdinir
-cefditoren
-etidronate
-fluoroquinolone antibiotics (examples: ciprofloxacin, gatifloxacin, levofloxacin)
-ibandronate
-levodopa
-risedronate
-tetracycline antibiotics (examples: doxycycline, minocycline, tetracycline)
-thyroid hormones
-warfarin

They need to know if you have any of these conditions:

-bleeding or clotting disorder
-history of anemia of any type
-other chronic health condition
-an unusual or allergic reaction to vitamins, minerals, other medicines, foods, dyes, or preservatives

See your health care professional for regular checks on your progress. Remember that vitamin and mineral supplements do not replace the need for good nutrition from a balanced diet.
Stools commonly change color when vitamins and minerals are taken. Notify your health care professional if this change is alarming or accompanied by other symptoms, like abdominal pain.

Keep out of the reach of children.
Most vitamins and minerals should be stored at controlled room temperature. Check your specific product directions. Protect from heat and moisture. Throw away any unused medicine after the expiration date.