Which of the following side effects is a common, harmless occurrence associated with Rifampin that patients should be counseled about?
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Correct answer: Orange-red discoloration of urine, sweat, and tears
Rifampin is itself an orange-red compound and is excreted in urine, sweat, saliva, and tears. The resulting discoloration is harmless, but patients should be warned in advance because it can be alarming and can permanently stain soft contact lenses.
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