In a patient with G6PD deficiency, which medications or substances should be avoided to prevent hemolysis?

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Multiple Choice

In a patient with G6PD deficiency, which medications or substances should be avoided to prevent hemolysis?

Red blood cells in G6PD deficiency can’t generate enough NADPH to keep glutathione in its reduced form, so they are vulnerable to oxidative stress. Medications that increase oxidative burden can trigger hemolysis in these patients. Sulfonamides, including trimethoprim-sulfamethoxazole, are classic oxidative agents and are well known to precipitate acute hemolytic anemia in G6PD deficiency, so they should be avoided. By contrast, at therapeutic doses acetaminophen, amoxicillin, and ibuprofen do not pose the same oxidative threat and are generally considered safe options when needed, since they do not induce the oxidative stress that precipitates hemolysis in G6PD deficiency. If an antimicrobial is required, choose agents with lower oxidative potential.

Red blood cells in G6PD deficiency can’t generate enough NADPH to keep glutathione in its reduced form, so they are vulnerable to oxidative stress. Medications that increase oxidative burden can trigger hemolysis in these patients. Sulfonamides, including trimethoprim-sulfamethoxazole, are classic oxidative agents and are well known to precipitate acute hemolytic anemia in G6PD deficiency, so they should be avoided. By contrast, at therapeutic doses acetaminophen, amoxicillin, and ibuprofen do not pose the same oxidative threat and are generally considered safe options when needed, since they do not induce the oxidative stress that precipitates hemolysis in G6PD deficiency. If an antimicrobial is required, choose agents with lower oxidative potential.

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