Aldactone
Spironolactone 25mg and 100mg film-coated tablets, used in the management of hypertension, oedema, heart failure and hyperaldosteronism. An aldosterone antagonist.
- Category
- Heart & Blood Pressure
- Active ingredient
- Spironolactone
- Route
- Oral use
- Form
- Film-coated tablet
- Strengths
- 25 · 100mg
You will receive a quality generic equivalent, depending on stock.
No prescription needed: we place your order for Aldactone on your behalf.
- Conditions
- Hypertension · Oedema · Heart Failure · Hyperaldosteronism
- Therapeutic class
- Diuretic
- Pharmacological class
- Aldosterone Antagonist
- Known off-label uses
- hirsutism
- Contraindications
- hypersensitivity to spironolactone; Addison's disease; hyperkalaemia; anuria
- Minor side effects
- headache; gastrointestinal disturbances; drowsiness
- Moderate side effects
- gynaecomastia; menstrual irregularities; hyponatraemia
- Dosage forms
- Film-coated tablet
- Administration route
- Oral use
- Originator
- Pfizer
- Onset time
- 2–4 days
- Duration
- 2–3 days
- Storage instructions
- Store below 25°C, protected from light.
- Drug interactions
- potassium-sparing diuretics; ACE inhibitors
- Age restrictions
- Use with caution in elderly patients.
Precautions and warnings
regular blood monitoring of potassium levels required; avoid excessive salt intake; may affect urination frequency
Serious side effects
severe hyperkalaemia, requires immediate medical attention; arrhythmia, requires immediate medical attention
Patient summary
Spironolactone 25mg and 100mg film-coated tablets, used in the management of hypertension, oedema, heart failure and hyperaldosteronism. An aldosterone antagonist.
Mechanism of action
It serves as a competitive antagonist of aldosterone. By blocking the effects of aldosterone in the distal renal tubules, it increases sodium and water excretion while retaining potassium, which helps reduce excess fluid and pressure.
Pregnancy and breastfeeding
Pregnancy: Use only if benefit outweighs risk. Breastfeeding: Confirm breastfeeding suitability with a qualified clinician or pharmacist before use.
Aldactone is the primary brand name for spironolactone, a well-established medication used in the management of hypertension, oedema and heart failure. Supplied as a tablet by Pfizer, options include strengths of 25mg and 100mg. Many patients requiring this type of therapy view the drug as a foundational component of their ongoing treatment.
Buying Aldactone online
While the original brand remains a preferred choice for many, generic versions containing spironolactone are often produced in India to provide a significantly more affordable option. This makes the treatment accessible for expats and those living in regions where local medicine supply may be restricted.
Is Aldactone the original brand?
Yes, Aldactone is the originator brand name, made by Pfizer. Yasabai uses it to identify the medicine; what you receive is a generic with the same active ingredient (spironolactone) at the same dose, mostly a recognised Indian branded generic. The exact brand depends on stock.
What is the price of Aldactone?
It depends on the strength and pack. Aldactone comes in 25 and 100mg strengths, in packs of 30 to 360 tablets, and the price per tablet for every option is shown above, in US dollars or the currency you choose. Larger packs cost less per tablet. Paying with Bitcoin or Ethereum gives you an extra 10% off.
What is Aldactone used for?
Aldactone contains spironolactone, used for hypertension, oedema, heart failure and hyperaldosteronism. Spironolactone serves as a competitive antagonist of aldosterone.
How long does Aldactone take to work?
Spironolactone usually starts to work within 2 to 4 days. The exact timing differs between people.
What side effects can Aldactone cause?
The common side effects of spironolactone are headache, gastrointestinal disturbances and drowsiness. Less common ones include gynaecomastia, menstrual irregularities and hyponatraemia. Serious but less common side effects include severe hyperkalaemia and arrhythmia, which need urgent medical attention.
Which medicines interact with Aldactone?
Spironolactone can interact with potassium-sparing diuretics and ACE inhibitors. Tell your doctor or pharmacist about every medicine you take before you start Aldactone.
Do I need a prescription to buy Aldactone in Thailand?
No. In Thailand spironolactone is sold by pharmacists without a prescription, and Yasabai does not ask for one either. We are an online store, not a dispensing pharmacy; we arrange your order and delivery on your behalf.
Ordering without a prescription →Do you deliver Aldactone to Thailand?
Yes. Our pharmacy partners ship from India to Thailand and across Asia in discreet packaging. Standard Airmail takes up to 3 weeks; Express Tracked Courier takes up to 1 week.
How ordering works →What you will receive
Aldactone is the originator brand name, made by Pfizer. We use it here to identify the medicine only; we are not affiliated with Pfizer and do not ship the original Aldactone.
- You receive a generic equivalent: the same active ingredient (Spironolactone) at the same dose, mostly recognised Indian branded generics from vetted manufacturers.
- The exact brand supplied depends on what is in stock at the dispatching warehouse.
- A regulated generic matches the original ingredient for ingredient by legal standard.