Urine discoloration is a side effect of which antiseizure medication?

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Study for the Galen Pharmacology Exam 1 Test. Use flashcards and multiple choice questions with hints and explanations. Achieve exam success!

Multiple Choice

Urine discoloration is a side effect of which antiseizure medication?

Explanation:
Some antiseizure medications can cause harmless changes in urine color. Phenytoin is a classic example because its metabolites are excreted in the urine and can give it a pink to reddish-brown tint. This color change isn’t a sign of toxicity or kidney trouble; it’s a benign side effect of the drug. The other medications listed don’t typically cause urine discoloration—valproic acid is more linked to liver-related effects, gabapentin to dizziness or edema, and phenobarbital to sedation and cognitive effects. So the medication most commonly associated with this side effect is phenytoin.

Some antiseizure medications can cause harmless changes in urine color. Phenytoin is a classic example because its metabolites are excreted in the urine and can give it a pink to reddish-brown tint. This color change isn’t a sign of toxicity or kidney trouble; it’s a benign side effect of the drug. The other medications listed don’t typically cause urine discoloration—valproic acid is more linked to liver-related effects, gabapentin to dizziness or edema, and phenobarbital to sedation and cognitive effects. So the medication most commonly associated with this side effect is phenytoin.

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