While less common, the most serious side effects of spironolactone are described below, along with what to do if they happen. Severe Allergic Reactions.Spironolactone may causeallergic reactions, which can be serious. Stop using spironolactone and get help right away if you have any of the follow...
Enter your medication into the WebMD interaction checker Check Interactions Overdose/Missed Dose What should I do if I accidentally use too much spironolactone? If you or someone else has used too much spironolactone, get medical help right away, call 911, or contact a Poison Control center...