Did you know grapefruit juice can cause massive, accidental overdoses if consumed with medication?
This question-formatted PSA brought to you by my tendency to read the BBC news:
For the TL;DR crowd:
Apparently, recent studies show huge jumps in the uptake of certain drugs when there's grapefruit juice in the digestive tract at the same time. Unless you like to eat fugu prepared by amateur, unlicensed sushi chefs, it's probably wise to avoid consuming it with, or short before and after, taking your medications.