some combinations of foods and drugs will cause the drugs to lose come of their potency others will simply interfere temporarily with the body's absorption of a single vitamin. some of the combinations can be dangerous; for example, monoamine oxidase (MOA) inhibitors, prescribed for depression and high blood pressure, can cause trouble when combined with tyramine, a chemical found is aged foods. when the two mix, bloodpressure soars and the patient can suffer brain damage and even death