Spironolactone Shortage Update: What Patients Need to Know in 2026

If your pharmacist told you they're out of spironolactone, or you've noticed it's harder to find than it used to be, you're not imagining things. The supply picture for spironolactone has changed in recent years, and understanding what's happening can help you take the right steps to stay on your medication. Here's everything patients need to know about spironolactone availability in 2026.

The Short Answer: Is Spironolactone in Shortage?

As of early 2026, the FDA has not declared a formal nationwide shortage of generic spironolactone tablets. Generic spironolactone is manufactured by multiple companies and is generally available in the United States. However, there are two important supply disruptions that patients should know about:

Pfizer discontinued brand-name Aldactone tablets (25 mg and 100 mg formulations). This is a permanent manufacturing discontinuation, not a temporary shortage.

Canada experienced a significant spironolactone shortage in 2025, which affected multiple manufacturers and formulations. While this primarily impacted the Canadian market, it signals the vulnerability of global spironolactone supply chains.

What Happened to Aldactone (Brand-Name Spironolactone)?

Pfizer, the manufacturer of Aldactone, announced the discontinuation of the 25 mg and 100 mg tablet formulations of Aldactone. This type of discontinuation typically happens when a brand-name manufacturer decides a product is no longer economically viable to produce, especially once generic competition is well-established.

What this means for patients: If your doctor prescribed 'Aldactone' by brand name, you will need to ask your pharmacy for generic spironolactone instead. Generic spironolactone contains the same active ingredient at the same dose and is equally effective. Ask your doctor to note on the prescription 'substitution permitted' or simply write 'spironolactone' generically.

Shortage History: How Did We Get Here?

Spironolactone has been used clinically since the late 1950s. For most of its history, it was available without major supply disruptions. However, a convergence of factors has created new vulnerabilities in recent years:

Telehealth boom: The rise of telehealth platforms prescribing spironolactone for hormonal acne and hair loss dramatically increased demand, particularly among younger women, starting around 2020.

Brand discontinuation: Pfizer's decision to stop making Aldactone tablets adds supply pressure by removing one manufacturer from the market entirely.

Global supply chain fragility: Much of the active pharmaceutical ingredient (API) used in generic spironolactone is manufactured in India and China. Disruptions to those supply chains ripple quickly to US pharmacies.

Low-margin generic economics: Generic spironolactone is inexpensive — good for patients, but it also means thin profit margins for manufacturers. Thin margins make it less financially attractive for new manufacturers to enter the market and easier for existing ones to exit.

Current Availability by Formulation (2026)

Generic spironolactone 25 mg tablets: Generally available. Multiple generic manufacturers. Occasional localized stock-outs.

Generic spironolactone 50 mg tablets: Generally available. Well-stocked at most major pharmacies.

Generic spironolactone 100 mg tablets: More variable availability. More affected by the Aldactone discontinuation as pharmacies adjust their generic sourcing.

Aldactone brand tablets (25 mg, 100 mg): Discontinued by Pfizer. No longer being manufactured.

CaroSpir oral suspension (25 mg/5 mL): Available but expensive and not routinely stocked by most pharmacies. May require special order.

What Patients Should Do Right Now

Don't panic. Generic spironolactone is still available in the US from multiple manufacturers. Most patients will be able to fill their prescriptions — it may just require visiting a different pharmacy.

Ask your pharmacy specifically for generic spironolactone (not Aldactone). Make sure they're not turning you away because Aldactone is gone when generic is available.

Use medfinder to find a pharmacy that has your dose in stock. We call pharmacies near you and text you which ones can fill your prescription.

Refill early. Start looking for your refill at least 7-10 days before you run out.

Contact your prescriber if you're having trouble. They can work with you on dose adjustments or an alternative medication if truly necessary.

Is the Shortage Likely to Improve?

The US generic supply of spironolactone is expected to remain relatively stable as long as existing generic manufacturers maintain production. The brand-name Aldactone discontinuation is permanent, but generic alternatives remain available. For more detail on the supply picture, see our companion piece for providers and prescribers.