Furosemide
Brand: Lasix
Key warning
High-alert caution: a potent loop diuretic — excessive doses cause profound diuresis with water and electrolyte depletion, so dosing is individualised and electrolytes are monitored. Note current Lasix labelling carries NO boxed warning; some older generic labels still show the legacy one.
Common side effects
- Frequent urination
- Low potassium
- Dizziness
- Dehydration
- Hearing changes at high doses
Key interactions & cautions
- NSAIDs can blunt its effect
- Adds to blood-pressure lowering of other drugs
- May raise lithium levels
- Caution with other ototoxic drugs
Counseling points
- Take earlier in the day to limit nighttime urination
- Rise slowly to reduce dizziness
- Report muscle cramps or weakness
- May need potassium-rich foods or supplement
- Report ringing in the ears
High-yield study aid for exam prep — not a substitute for the package insert or a pharmacist’s dispensing reference.