NAPLEX (North American Pharmacist Licensure Examination) Practice Exam 2025 - Free NAPLEX Practice Questions and Study Guide

Question: 1 / 1820

Which drug discolors the skin to a red-orange color?

Entacapone

Methyldopa

Rifampin

Phenazopyridine

Phenazopyridine is the correct answer because it is known to discolor the skin to a red-orange color. This drug is commonly used to relieve the pain and discomfort associated with urinary tract infections. Phenazopyridine can cause a harmless, but noticeable, side effect of urine and skin discoloration to a red-orange color, which is a result of the drug's metabolites being excreted.

The other options are not correct because they do not typically cause skin discoloration to a red-orange color. Entacapone is used in the treatment of Parkinson's disease, Methyldopa is an antihypertensive medication, and Rifampin is an antibiotic commonly used to treat tuberculosis and other bacterial infections.

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