That is good to know about it taking large amounts. I had read about it earlier and the compounds in grapefruit responsible for this effect are apparently called furanocoumarins and flavonoids, which are in fact present in some other types of citrus (including lime so disregard my mention of it in an earlier post), as well as some other plants such as celery and parsley. When the wärñiñg about ìñt€ràçti0ñ$ is mentioned with m€d$ it seems like grapefruit is typically the only one mentioned so maybe lower amounts in the other stuff.