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Only some antibiotics can increase potassium in your body. Sulfamethoxazole/Trimethoprim (Septra or Bactrim) and pentamidine have been known to increase potassium levels. If you are not taking either of those, your antibiotics should no effect on your potassium. If you are taking one of these drugs and your potassium levels are already high, you should contact your doctor and see if he or she wants to change your antibiotic to a different one.

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15y ago

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