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Spironolactone Side Effects

The most commonly reported side effects of spironolactone include dyspnoea, fatigue, and acute kidney injury, based on 144,661 FDA adverse event reports from 2004 to 2025. 3.4% of reports found the drug to be ineffective.

Spironolactone side effects

Percentages show how often each reaction appears relative to total reports for spironolactone.

1
Dyspnoea6.6%9,487
2
Fatigue5.4%7,790
3
Acute Kidney Injury4.9%7,102
4
Nausea4.9%7,039
5
Diarrhoea4.8%6,949
6
Off Label Use4.0%5,780
7
Dizziness3.9%5,607
8
Headache3.8%5,526
9
Hypotension3.6%5,162
10
Drug Ineffective3.4%4,913
11
Death3.3%4,763
12
Fall3.2%4,612
13
Vomiting2.9%4,257
14
Asthenia2.9%4,233
15
Cardiac Failure2.8%4,060

These are voluntary reports and do not establish that spironolactone caused these reactions.

Report severity

79.2%Serious114,506 reports
48.1%Hospitalizations69,634 reports
13.4%Fatal19,396 reports

Seriousness is determined by the reporter, not by OpenClaim.

Spironolactone drug interactions

Other drugs that appear in adverse event reports alongside spironolactone. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Furosemide6.4%9,321
2
Treprostinil4.8%6,888
3
Valsartan4.5%6,462
4
Sacubitril3.6%5,223
5
Apixaban2.6%3,718
6
Ambrisentan2.5%3,552
7
Lenalidomide2.4%3,450
8
Omeprazole2.3%3,273
9
Bisoprolol-fumarate2.1%2,985
10
Rivaroxaban2.0%2,951
11
Metformin2.0%2,849
12
Aspirin1.9%2,739
13
Pantoprazole-sodium1.9%2,735
14
Macitentan1.9%2,698
15
Adalimumab1.8%2,676

Taken alongside

1
Furosemide35.6%51,545
2
Aspirin17.6%25,397
3
Acetaminophen13.7%19,802
4
Atorvastatin-calcium13.3%19,248
5
Levothyroxine-sodium13.1%18,920
6
Omeprazole12.0%17,316
7
Metoprolol11.8%17,011
8
Ergocalciferol11.2%16,259
9
Pantoprazole-sodium10.4%15,019
10
Albuterol10.2%14,825
11
Carvedilol10.2%14,707
12
Metformin9.7%14,020
13
Amlodipine8.7%12,607
14
Potassium-chloride8.6%12,427
15
Insulin8.3%11,964

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports spironolactone side effects

54.8% of spironolactone adverse event reports involve female patients and 38.6% involve male patients. The largest age group is elderly at 56%. These figures reflect who reports side effects, not underlying risk.

Sex

Female54.8%
Male38.6%
Unknown6.6%

Age group

< 21.1%
2–110.8%
12–170.8%
18–6441.6%
65+55.7%

What is spironolactone used for

Conditions and purposes for which patients were taking spironolactone when the adverse event was reported.

11-beta-hydroxylase DeficiencyAbdominal Cavity DrainageAbdominal DiscomfortAbdominal DistensionAbdominal HerniaAbdominal PainAbdominal Pain LowerAccelerated HypertensionAccidental Exposure To ProductAcid Base BalanceAcneAcne CysticAcute Coronary SyndromeAcute Hepatic FailureAcute Kidney Injury

Showing 15 of 1,428 indications

Spironolactone brand names and reporting trend

Spironolactone is sold under the brand name Aldactazide.

Brand names

Aldactazide119,010

Quarterly reports (20042025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking spironolactone with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.