Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Spironolactone is a potassium-sparing diuretic used in heart failure, fluid and hormone conditions. It belongs to the Diuretic (water tablet) group. Diuretics help the body remove excess salt and water, lowering blood pressure and reducing swelling.
Take earlier in the day to avoid night-time urination
Stay hydrated in hot weather
When to see a doctor urgently
Severe dizziness, cramps or palpitations (salt imbalance)
Very little urine or signs of dehydration
Gout flares with some diuretics
Not a prescription — no dose shown. The right dose of spironolactone depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
When should I take a water tablet?
Usually in the morning, so the extra urination does not disturb your sleep.
Do diuretics affect potassium?
Some lower potassium and others raise it, so your doctor checks your blood salts, especially when starting or changing the dose.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.