Lasix Drug Handout

Lasix is a diuretic (water pill). It helps the body get rid of water by increasing the kidneys production of urine.

Uses/Indications

Please contact CVCA should any of these symptoms be noted

Increased thirst and urination (please contact us if this is not manageable)
Can cause dehydration in patients not drinking well, or with other diseases that cause fluid loss (kidney disease, vomiting/diarrhea)
May decrease levels of calcium, sodium, potassium, or magnesium, particularly In patients that are not eating well.
Low risk to increase blood sugar levels, altering the insulin need in diabetics
May cause low blood pressure and weakness in patients with pericardial effusion

Can be given with or without food
Almost never used alone in the treatment of congestive heart disease
Can be given in pill form, liquid or made into chewable treats
Do not stop or lower the dose without the approval of a veterinarian
Monitor kidney values and electrolytes through blood work after starting or increasing the dose, and at least every 6 months thereafter
Often used in combination with an ACE inhibitor and/or spironolactone, decreasing the risk for low potassium

May lower blood pressure when combined with drugs that result in vasodilation (ACEi, amlodipine, diltiazem)
May increase risk for hearing loss when used with gentamicin or amikacin
Increases blood levels of aspirin, theophylline

Synonyms: (Lasix, Furosemide, Salix)