Consuming grapefruit can cause a fatal overdose if eaten while taking certain prescription medications, because it contains compounds called furanocoumarins that block an essential digestive enzyme.

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Consuming grapefruit can cause a fatal overdose if eaten while taking certain prescription medications, because it contains compounds called furanocoumarins that block an essential digestive enzyme. Normally, this enzyme breaks down a portion of the medication in your gut before it reaches your bloodstream, ensuring you only absorb the correct therapeutic dose. When grapefruit shuts this enzyme down, the entire dosage floods your system at once, transforming a normal blood pressure pill into a lethal chemical weapon. It is incredibly alarming that a slightly bitter citrus fruit popular at boring hotel breakfasts possesses the power to completely override modern pharmaceuticals and casually orchestrate your untimely demise