Aldactone Tablet
Description
Aldactone 25 tablet is a diuretic medication, also known as a "water pill," with spironolactone as its active ingredient. It is primarily used to treat fluid retention (oedema) that can result from conditions such as congestive heart failure, liver cirrhosis, and certain kidney disorders. The medication also addresses low potassium levels (hypokalaemia). Its action is to prevent the body from absorbing and retaining excessive salt and water, thereby reducing swelling. It is important to note that this medication helps remove excess water and electrolytes without causing a significant loss of potassium.
This medicine is a prescription medicine and should be taken exactly as advised by a doctor. A healthy diet and exercise, as well as a salt-restricted diet, may also be recommended by the doctor to enhance its effects, especially when treating high blood pressure. It is crucial to avoid consuming potassium-rich foods or supplements while taking this medication, as this can lead to high blood potassium levels, which can be harmful.
Aldactone should not be stopped suddenly without consulting a healthcare professional, as abrupt discontinuation can lead to fluid retention or a sudden increase in blood pressure. The doctor will gradually decrease the dose or switch to an alternative if necessary. It is contraindicated in individuals who are allergic to spironolactone, are unable to pass urine, have a high potassium level, have Addison's disease, or are taking other potassium-sparing diuretics or potassium supplements.
Common side effects of Aldactone include dizziness, nausea, vomiting, muscle spasms, and tiredness, although not everyone experiences them. These side effects often improve as the body adjusts to the medication. Due to potential side effects like dizziness and confusion, it is advisable to avoid driving after taking this medication. Patients who are pregnant, breastfeeding, or have a history of heart, liver, or kidney problems should consult their doctor before starting this medication.
Cglactone 25mg Tablet and Onoctone 25 tablet also contains spironolactone as its main ingredient.
Product Summary
Offer Price | ₹28.67 |
You Save | ₹8.56 (23% on MRP) |
Contains | Spironolactone(25.0 Mg) |
Uses | Fluid retention, high blood pressure, low potassium, heart failure |
Side effects | Nausea, vomiting, dizziness |
Therapy | ANTI-HYPERTENSIVE |
Uses
Contraindications
- If you are allergic to spironolactone or other ingredients of Aldactone 25 mg tablet.
- If you are unable to pass urine or have any kidney disease.
- If you have a high level of potassium in the body.
- If you have Addison’s disease (symptoms include weakness, weight loss and low blood pressure).
- If you are taking potassium-sparing diuretics (water pills) or potassium supplements.
- If you are taking a medicine - eplerenone or other potassium-sparing diuretics.
Side effects
- Dizziness
- Nausea
- Vomiting
- Increase in potassium level
- Muscle spasm
- Tiredness
- Skin rashes
Precautions and Warnings
Pregnancy
Breast Feeding
Driving
Alcohol
Other General Warnings
- You are pregnant or breastfeeding.
- You develop an allergic reaction after taking Aldactone 25 tablet.
- You have problems with the heart, liver or kidneys.
- You develop a high level of potassium in the blood.
- You suffer while urinating.
- You are taking potassium supplements or consuming foods rich in potassium.
Directions for Use
Storage and disposal
- Store at room temperature, protected from sunlight, heat or moisture.
- Keep it away from children and pets.
Quick Tips
- Aldactone (spironolactone) tablets are a prescription medication used to manage conditions such as high blood pressure, heart failure, and oedema associated with various ailments.
- Always take Aldactone precisely as prescribed by your doctor. Do not take more or less than the recommended dose.
- It is typically taken once daily, preferably in the morning with food or immediately after a meal.
- Swallow the tablet whole with a glass of water. Do not crush, chew, or break the tablet unless directed by your doctor.
- If you forget to take a dose, do so as soon as you remember. However, if it's close to your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to compensate for a missed one. ...
- Avoid consuming excessive amounts of potassium-rich foods or using potassium supplements while on Aldactone, as this may lead to dangerously high potassium levels.
- Be cautious with salt substitutes that contain potassium, as they can also increase potassium levels in the blood.
- Aldactone may cause dizziness or drowsiness in some individuals. Avoid activities that require mental alertness until you understand how the medication affects you.
- Inform your doctor of any other medications you are taking, including over-the-counter drugs, supplements, and herbal products, as some medications can interact with Aldactone.
- Aldactone is not suitable for everyone, particularly those with kidney problems, liver disease, or Addison's disease. Be sure to inform your doctor about your medical history before starting the medication. ...
- It may take several weeks for Aldactone to demonstrate its full effects. Do not discontinue the medication abruptly without consulting your doctor.
- Contact your doctor immediately if you experience symptoms such as excessive thirst, confusion, irregular heartbeat, or muscle weakness, as these may indicate elevated potassium levels.
Dosage
Overdose
Missed a Dose
Mode of Action
How Does It Work?
Interactions
Interactions with other medicines
- Some medicines affect the way Aldactone 25 mg tablet works or Aldactone itself reduces the effectiveness of other medicines taken at the same time.
- Inform the physician about the medicines, supplements or herbals you take or might take to avoid possible interaction.
- Taking other water pills, pain-relieving medicines, blood thinners, potassium supplements, medicines that cause hyperkalaemia (raised blood potassium levels), medicines to treat heart problems, fits, infections, high cholesterol levels....
Interactions with food items
Content Details

Dr. Abhishek B L
MBBS, MD (Pharmacology)

Dr. Ritu Budania
MBBS, MD (Pharmacology)
Frequently Asked Questions (FAQs)
Q: What instructions should I follow before taking Aldactone 25 mg tablet?
Q: Can I take Aldactone 25 medicine along with potassium supplements?
Q: Which foods must be avoided while taking Aldactone 25 mg medicine?
Q: Does the medicine cause weight gain?
Q: What time of day should I take Aldactone?
Q: Can I stop Aldactone suddenly?
Q: What are the side effects of Aldactone?
Q: What is the action of Aldactone?
Q: What is the composition of Aldactone?
References
- Aldactone 25 mg Film-Coated Tablets - Summary of Product Characteristics (SmPC) - (emc) [Internet]. Medicines.org.uk. 2021 [cited 1 December 2021]
- Aldactone 25 mg Film-Coated Tablets - Patient Information Leaflet (PIL) - (emc) [Internet]. Medicines.org.uk. 2021 [cited 1 December 2021]
- Spironolactone [Internet]. Ncbi.nlm.nih.gov. 2021 [cited 1 December 2021]
- CDSCO [Internet]. Cdscoonline.gov.in. 2021 [cited 1 December 2021]
- Patibandla S, Heaton J, Kyaw H. Spironolactone. [Updated 2023 Jul 4]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. [Accessed 24 Jan 2025].
- Spironolactone. DrugBank [Internet]. [Accessed 24 Jan 2025].
- National Center for Biotechnology Information (2025). PubChem Compound Summary for CID 5833, Spironolactone. Retrieved January 24, 2025
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