The combination of furosemide and spironolactone should be based on the blood potassium level to decide whether potassium supplementation is needed.
Furosemide is a strong diuretic, and diuresis is often accompanied by hypokalemia. Spironolactone has a slightly weaker diuretic effect, but the diuretic effect does not increase the loss of potassium ions at the same time, and the risk of hypokalemia will be reduced when the two are used together.
However, due to the stronger diuretic effect of furosemide, blood potassium should be rechecked regularly when the two are used together, and potassium ions should be supplemented appropriately if the blood potassium level appears to decrease.
Adverse reactions of furosemide include tinnitus, fatigue, nausea, vomiting, muscle cramps, electrolyte disorders, etc. It is contraindicated in patients who are allergic to the components of the drug. Adverse reactions to spironolactone include fatigue, male breast development, female breast swelling, increased hairiness, etc. It is contraindicated in patients who are allergic to the components of the drug and hyperkalemia.
Patients should take furosemide and spironolactone under the supervision of a physician, as well as pay attention to the adverse effects of the drug.