Everyone learns this one in medical school. I think there was a time when grapefruit was pretty popular, but perhaps not so much anymore.[1]<p>There are only a few other food-drug interactions, most of which are of little relevance:<p>Licorice and cheese with MAO inhibitors (older antidepressants) - hypertensive crisis.<p>Large amounts of leafy greens and warfarin (anticoagulant) - impaired anticoagulant effect.<p>Alcohol and metronidazole (antibiotic) - unpleasant hangover like reaction, flushing, headaches.<p>Ice during oxaliplatin infusion (chemotherapy drug for bowel cancer) - a VERY unpleasant but temporary syndrome of weird sensations in the throat and larynx.<p>[1] <a href="https://www.washingtonpost.com/news/wonk/wp/2015/09/14/the-incredible-fall-of-one-of-americas-favorite-fruits/" rel="nofollow">https://www.washingtonpost.com/news/wonk/wp/2015/09/14/the-i...</a>