Inspra Side Effects

Generic name: eplerenone

Medically reviewed by Drugs.com. Last updated on Mar 11, 2025.

Note: This document provides detailed information about Inspra.

Applies to eplerenone: oral tablet Side Effects associated with eplerenone. Some dosage forms listed on this page may not apply specifically to the brand name Inspra.

Applies to eplerenone: oral tablet.

Precautions

It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and to decide if you should continue to take it. Blood tests may be needed to check for unwanted effects.

Do not take the following medicines if you are using eplerenone (the active ingredient contained in Inspra)

• Amiloride (e.g., Midamor®) or
• Clarithromycin (e.g., Biaxin®) or
• Itraconazole (e.g., Sporanox®) or
• Ketoconazole (e.g., Nizoral®) or
• Nefazodone (e.g., Serzone®) or
• Nelfinavir (e.g., Viracept®) or
• Ritonavir (e.g., Norvir®) or
• Spironolactone (e.g., Aldactone®) or
• Triamterene (e.g., Dyrenium®) or
• Troleandomycin (e.g., Tao®).

Do not take other medicines unless they have been discussed with your doctor. This especially includes potassium supplements or salt substitutes containing potassium.

This medicine may increase the amount of potassium in your blood. Check with your doctor right away if you are having abdominal or stomach pain; confusion; difficulty with breathing; irregular heartbeats; nausea or vomiting; nervousness; numbness or tingling in the hands, feet, or lips; shortness of breath; or weakness or heaviness of the legs.

Serious side effects of Inspra

Along with its needed effects, eplerenone may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking eplerenone:

Other side effects of Inspra

Some side effects of eplerenone may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

For healthcare professionals

Applies to eplerenone: oral tablet.

General adverse events

Adverse reactions that occurred more frequently in patients treated with this drug compared to placebo were hyperkalemia and increased creatinine.^[Ref]

Metabolic

• Very common (10% or more): Potassium greater than 5.5 mEq/L (up to 15.6%)
• Common (1% to 10%): Potassium less than 3.5 mEq/L, potassium 6 mEq/L or greater^[Ref]

Renal

• Common (1% to 10%): Creatinine increased
• Frequency not reported: Renal function abnormal^[Ref]

Cardiovascular

• Frequency not reported: Myocardial infarction, angina pectoris^[Ref]

Nervous system

• Frequency not reported: Headache, dizziness^[Ref]

Endocrine

• Frequency not reported: Gynecomastia^[Ref]

Hepatic

• Frequency not reported: Gamma-glutamyltransferase increased^[Ref]

Dermatologic

• Postmarketing reports: Angioneurotic edema, rash^[Ref]

Genitourinary

• Frequency not reported: Abnormal vaginal bleeding^[Ref]

See also:

Further information

Inspra side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer