Tag: antibiotic side effects

Trimethoprim and Potassium Levels: How This Common Antibiotic Can Raise Your Risk of Hyperkalemia

• Robin Tudge
• November 19, 2025
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Trimethoprim, found in Bactrim, can dangerously raise potassium levels, especially in older adults and those on blood pressure meds. Learn who's at risk, how to prevent life-threatening hyperkalemia, and safer alternatives.