15 Unexpected Twists Your Body Takes With Diuretics
10. Hearing Problems (Ototoxicity)

Loop diuretics like furosemide (Lasix) may cause temporary or, in rare cases, permanent hearing loss—especially when given in high doses or used with other ototoxic drugs. Symptoms include ringing in the ears (tinnitus), muffled hearing, or sudden hearing changes. If any of these symptoms occur, patients should contact their doctor immediately. Regular hearing checks may be necessary for those on long-term high-dose therapy. Using the lowest effective dose and avoiding other ototoxic drugs may help reduce the risk.