Any medication has the potential to conflict with other medications or with food substances. Theoretically, physicians and pharmacists are responsible for bringing any conflicts to the attention of patients or caregivers, but in the real world this kind of monitoring does not always occur. It pays, then, for the caregiver to become familiar with medications and their possible incompatibility with food.
There is no substitute for a careful reading of the small print in the folders accompanying prescription drugs, or doing Internet research on possible food (and drug) conflicts. Most medications also give instructions as to whether they should be taken with food or on an empty stomach.