Rifampin therapy commonly causes discoloration of which substances?

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Multiple Choice

Rifampin therapy commonly causes discoloration of which substances?

Explanation:
Rifampin has a vivid orange pigment that is excreted in bodily fluids, so it commonly colors several secretions. This makes urine, saliva, tears, and sputum appear orange or reddish-brown. The effect can also color sweat and even stain contact lenses. It’s a harmless effect and doesn’t indicate toxicity. Other fluids such as blood or cerebrospinal fluid aren’t typically discolored by rifampin, and stools aren’t a usual site of this pigment, which is why those options aren’t the typical pattern.

Rifampin has a vivid orange pigment that is excreted in bodily fluids, so it commonly colors several secretions. This makes urine, saliva, tears, and sputum appear orange or reddish-brown. The effect can also color sweat and even stain contact lenses. It’s a harmless effect and doesn’t indicate toxicity. Other fluids such as blood or cerebrospinal fluid aren’t typically discolored by rifampin, and stools aren’t a usual site of this pigment, which is why those options aren’t the typical pattern.

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