Silectone 25

Tablet · Johnlee Pharma
PRESCRIPTION MEDICINE

Silectone 25 is a tablet made by Johnlee Pharma that contains Spironolactone 25 mg. Spironolactone is a diuretic (potassium-sparing): removes extra fluid in heart failure and liver disease; also used for some hormone conditions.

Ingredient (salt)Amount
Spironolactone25 mg

What it is used for

Removes extra fluid in heart failure and liver disease; also used for some hormone conditions.

How it works

A potassium-sparing diuretic that blocks the hormone aldosterone; used for heart failure, liver fluid, resistant high blood pressure, acne and excess hair in women.

How to take it

Usually 25 to 100 mg once a day with food. Blood potassium is checked.

Common side effects

  • Breast swelling or tenderness (men too)
  • Irregular periods
  • Dizziness
  • High potassium

Get medical help straight away if

Muscle weakness, slow or irregular heartbeat (high potassium)

Be careful

Can raise potassium; avoid potassium supplements unless advised.

Other medicines and interactions

Do not take potassium supplements or salt substitutes unless told. Risk of high potassium with ACE inhibitors, ARBs, trimethoprim and NSAIDs.

Pregnancy and breastfeeding

Avoid in pregnancy; considered acceptable while breastfeeding.

Same composition, other brands (2)

Aldactone 25Aldobloc 25

Ask your doctor or pharmacist before switching brands.

Same ingredients, different strength or form

Aldactone 50Aldactone 100

Common questions

What is Silectone 25?

Silectone 25 is a tablet by Johnlee Pharma containing Spironolactone 25 mg.

What is Silectone 25 used for?

Removes extra fluid in heart failure and liver disease; also used for some hormone conditions.

How should I take Silectone 25?

Usually 25 to 100 mg once a day with food. Blood potassium is checked. Always follow the dose your doctor or the pack gives.

What are the side effects of Silectone 25?

Common side effects include: Breast swelling or tenderness (men too), irregular periods, dizziness, high potassium. Get medical help straight away for: Muscle weakness, slow or irregular heartbeat (high potassium).

Does Silectone 25 need a prescription?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Can I take Silectone 25 in pregnancy or while breastfeeding?

Avoid in pregnancy; considered acceptable while breastfeeding.

What are the substitutes for Silectone 25?

Brands with the same composition: Aldactone 25, Aldobloc 25. Ask your doctor or pharmacist before switching.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.