new warning for patients not to drink grapefruit juice while taking Prepulsid (cisapride)

You'll see a new warning for patients not to drink grapefruit juice while taking Prepulsid (cisapride).

Grapefruit juice increases the absorption of Prepulsid...by inhibiting its metabolism in the GI tract.

The problem is that high levels of Prepulsid can lead to life-threatening arrhythmias.

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