Spironolactone (Aldactone) Medicare Coverage

Chemical name: Spironolactone

Brand name: Aldactone

Typical dosage: 25mg

Typical type: Tablet1

Spironolactone is a medication used to treat fluid retention, heart failure high blood pressure and high aldosterone levels. It’s available as a generic drug or as a name brand.

Spironolactone is a medication used to treat fluid retention, heart failure, high blood pressure and high aldosterone levels. Your dose of spironolactone depends on what you are treating and how well you tolerate it.

The brand name equivalent of Spironolactone is called Aldactone. Spironolactone depletes sodium and water from the body to help lower blood pressure and get rid of excess fluid.

Common side effects include diarrhea, drowsiness, dizziness, headache, upset stomach and hair loss.

Does Medicare cover Spironolactone or Aldactone?

Yes! 100% of Medicare Advantage plans and Medicare Part D plans cover Spironolactone.1

  • Medicare Advantage plans that offer prescription drug coverage are called Medicare Advantage Prescription Drug Plans (MA-PD). Most Medicare Advantage beneficiaries (88 percent) are enrolled in MA-PDs.2

  • Medicare prescription drugs plans each have their own formulary, or drug list, that details what prescription drugs are covered by the plan and how they are covered.

Drug coverage may vary based on plan availability. You may be able to find Medicare Advantage plan options in your area that cover Spironolactone.

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Average costs for Spironolactone with Medicare drug coverage1

Your copay and deductible costs for any prescription drug can vary depending on what coverage stage you’re in.

Deductible stage Typical copay stage
Your deductible is the amount of money you must spend on covered drugs before your Medicare drug coverage starts paying its share of costs.

In the deductible stage, you’re responsible for the full cost of your prescription drugs.

Some Medicare prescription drug plans have a $0 deductible. Medicare drug plans cannot have a deductible more than $415 in 2019.
After you meet your Part D deductible, you enter the initial coverage period.

During this phase (the typical copay stage), you pay a copayment (flat fee) or coinsurance (percentage) for your covered medications.
Free – $13 Free – $13

Additional information

You can take Spironolactone with or without food, but keep it consistent each time you take it.

Keep taking Spironolactone, even if you can’t feel it working.

Potassium can be elevated in the blood by Spironolactone. This can be deadly if left untreated. The risk is higher in people with diabetes, kidney disease, chronic illness and older adults.

Your doctor will monitor you closely.

Other electrolyte problems can also occur. Watch for fluid and electrolyte problems including mood changes, confusion, muscle pain, abnormal heartbeat, dizziness, passing out, seizures, fatigue or stomach upset.

Spironolactone can increase the chance of kidney problems. Signs of kidney problems include inability to pass urine, change in how much urine is passed, blood in the urine or a noticeable weight gain.



This article is for informational purposes only. It is not healthcare advice, treatment, or diagnosis. It is not an endorsement of or recommendation for this medication. Speak to your doctor or healthcare provider about your specific healthcare needs, including your prescription medications. Only take medication as directed by your doctor.

Coverage and costs of prescription medications will vary by Medicare plan. Not all plans are available in all areas.


Written by Hayden Gharibyar, Pharm.D.

Copyright © 2019 TZ Insurance Solutions LLC. All rights reserved.

1 GoodRx. Spironolactone. Retrieved Sep. 2019, from www.goodrx.com/spironolactone.

2 Jacobson, Gretchen; et al. A Dozen Facts About Medicare Advantage. (Nov. 13, 2018). Kaiser Family Foundation. Retrieved from www.kff.org/medicare/issue-brief/a-dozen-facts-about-medicare-advantage.

MedicareAdvantage.com is a website owned and operated by TZ Insurance Solutions LLC. TZ Insurance Solutions LLC and TruBridge, Inc. represent Medicare Advantage Organizations and Prescription Drug Plans having Medicare contracts; enrollment in any plan depends upon contract renewal.

Plan availability varies by region and state. For a complete list of available plans, please contact 1-800-MEDICARE (TTY users should call 1-877-486-2048), 24 hours a day/7 days a week or consult www.medicare.gov.

Medicare has neither reviewed nor endorsed this information.