Get emergency medical help if you have signs of an allergic reaction to spironolactone: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
a light-headed feeling, like you might pass out;
little or no urination;
high potassium level - nausea, weakness, tingly feeling, chest pain, irregular heartbeats, loss of movement; o
signs of other electrolyte imbalances - increased thirst or urination, confusion, vomiting, muscle pain, slurred speech, severe weakness, numbness, loss of coordination, feeling unsteady.
Common spironolactone side effects may include:
breast swelling or tenderness.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Spironolactone side effects (more detail)
