fosinopril sodium, Monopril (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

DRUG INTERACTIONS: Combining fosinopril with potassium supplements, potassium containing salt substitutes, or potassium-conserving diuretics such as amiloride (Moduretic), spironolactone (Aldactone), and triamterene (Dyazide, Maxzide), can lead to dangerously high blood levels of potassium (hyperkalemia) since fosinopril has a tendency to reduce the excretion of potassium. Fosinopril should not be taken at the same time as aluminum or magnesium-based antacids, such as simethicone (Mylanta, Gas-X, etc.) or Maalox since these antacids bind fosinopril and decrease the amount of fosinopril that is absorbed from the intestine. Patients should take antacids and fosinopril at least two hours apart.

Fosinopril can cause an increase in the amount of lithium (Eskalith, Lithobid) in the body in patients taking lithium, sometimes causing lithium-associated side effects.

Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin, Medipren, Nuprin, PediaCare Fever, etc.), indomethacin (Indocin, Indocin-SR), and naproxen (Anaprox, Naprelan, Naprosyn, Aleve) may reduce the effects of ACE inhibitors on blood pressure. Combining fosinopril or other ACE inhibitors with nonsteroidal anti-inflammatory drugs (NSAIDs) in patients who are elderly, volume-depleted (including those on diuretic therapy), or with poor kidney function may result in reduced kidney function, including kidney failure. These effects usually are reversible. Nitritoid reactions (symptoms include facial flushing, nausea, vomiting, and hypotension) may occur when injectable gold sodium aurothiomalate (Myochrysine), used in the treatment of rheumatoid arthritis, is combined with ACE inhibitors, including fosinopril.

Medically Reviewed by a Doctor on 5/15/2015


Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Pill Finder Tool

Need help identifying pills and medications?
Use the pill identifier tool on RxList.


Back to Medications Index