Spironolactone Oral

In Depth

Generic Name: SPIRONOLACTONE - ORAL
Pronounced: (SPY-row-no-LACK-tone)

Spironolactone Oral Side Effects

Drowsiness, lightheadedness, stomach upset, diarrhea, nausea, vomiting, or headache may occur. To minimize lightheadedness, get up slowly when rising from a seated or lying position. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

dizziness
increased thirst
change in the amount of urine
mental/mood changes
unusual fatigue/weakness
muscle spasms
menstrual period changes
breast enlargement (gynecomastia) in men
sexual function problems

This medication may lead to high levels of potassium, especially in patients with kidney problems. If not treated, very high potassium levels can be fatal. Tell your doctor immediately if you notice any of the following unlikely but serious side effects:

slow/irregular heartbeat
muscle weakness

Tell your doctor immediately if any of these rare but very serious side effects occur:

signs of infection (e.g., fever, persistent sore throat)
severe stomach/abdominal pain
persistent nausea/vomiting
vomit that looks like coffee grounds
dark urine
yellowing of the eyes/skin

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include:

rash
itching/swelling (especially of the face/tongue/throat)
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.

In Canada, you may report side effects to Health Canada at 1-866-234-2345.

Spironolactone Oral Medical Alert

Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854- 1166 (USA) or 1-800-668-1507 (Canada).