Hydrochlorothiazide is a thiazide diuretic (water pill) widely used to treat hypertension (high blood pressure) and oedema (fluid retention). By helping the kidneys remove excess water and salt from the body, it effectively lowers blood pressure and reduces swelling.

Furosemide is a potent loop diuretic (water pill) used to treat fluid retention (oedema) and swelling caused by heart failure, liver disease, or kidney disease.