Aldactone Dosage: What You Need to Know

If you’ve been prescribed Aldactone (spironolactone), the first question on your mind is probably “how much should I take?” The answer depends on why you’re using it – whether for high blood pressure, fluid retention, acne, or another condition. Below you’ll find the most common dosing ranges, how doctors decide on the right amount, and practical tips to keep you safe.

Typical Doses for Common Uses

For most adults, doctors start with a low dose and adjust based on response. Here’s a quick snapshot:

• High blood pressure: 25 mg to 100 mg once daily. Some people split the dose into two smaller pills to reduce stomach upset.
• Edema (fluid buildup): 25 mg to 200 mg daily, often taken with a morning and evening dose.
• Acne (especially hormonal acne in women): 50 mg to 100 mg once daily. The lower end works for many; higher doses might be needed for stubborn breakouts.
• Heart failure: 25 mg to 100 mg daily, usually added to other heart meds. Doctors watch kidney function closely in this group.

These numbers are guidelines, not rules. Your doctor will consider your weight, kidney health, and other meds before picking a starting point.

Adjusting Your Dose Safely

Spironolactone acts as a potassium‑sparing diuretic, so the biggest safety concern is high potassium levels. After you start, your doctor will likely order blood tests within a week or two to check potassium and kidney function.

If the labs look good, the dose may be increased by 25 mg increments every few weeks until you reach the desired effect. If you feel dizzy, notice muscle weakness, or get irregular heartbeats, call your doctor right away – those can be signs of too much potassium.

Special groups need extra care:

• Kidney disease: Start at 12.5 mg to 25 mg and increase very slowly, because kidneys clear the drug.
• Elderly patients: Lower starting doses (12.5 mg) reduce the risk of low blood pressure and electrolyte swings.
• Pregnant or breastfeeding women: Aldactone is usually avoided unless the benefit outweighs the risk. Talk to your OB‑GYN.

Never add over‑the‑counter potassium supplements or salty foods without checking with your doctor. Even a banana can push potassium up if you’re already on a high dose.

When you miss a dose, just take it as soon as you remember unless it’s almost time for the next one. Doubling up isn’t worth the risk of side effects.

Common side effects include mild nausea, breast tenderness (especially in men), and increased urination. These usually fade after a week or two. If you get severe rash, yellowing eyes, or sudden weight gain, seek medical help ASAP.

Bottom line: start low, follow your doctor’s lab schedule, watch for potassium warnings, and adjust only under medical supervision. With the right dose, Aldactone can control blood pressure, reduce swelling, and even clear up acne without major hassles.