Torasemide
Torasemide is a loop diuretic. It blocks sodium, potassium and chloride reabsorption in the ascending limb of the loop of Henle, producing a stronger and more predictable fluid loss than thiazides. It is used for oedema, for congestion in heart failure, and for high blood pressure.
It can be taken with or without food and is normally a morning medicine, since the urge to pass urine follows within hours. Potassium and magnesium go out with the water, so potassium and sodium are monitored, along with creatinine, which reflects how the kidneys are coping with the reduced fluid volume, and uric acid, which tends to rise on diuretics. Drinking enough matters even though the drug removes fluid, and daily weight is a practical measure of how much has actually been lost.
Cramps, pronounced weakness, palpitations, dizziness on standing or confusion can mean potassium or sodium has fallen too far and are reasons to see a doctor. Rapid weight loss or gain, much reduced urine output, or hearing changes such as ringing in the ears also warrant medical review.
Reference information, not medical advice. Discuss any change with your doctor.