Common side effects of Quinidex include diarrhea, nausea, vomiting, loss of appetite, stomach pain or cramps, a burning feeling in throat or chest (e.g., heartburn), depression, muscle or joint pain, headache, dizziness, skin rash, skin dryness/peeling/flaking, or flushing (warmth, redness, or tingly feeling).
What are the side effects of quinidine?
Quinidine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- diarrhea.
- nausea.
- vomiting.
- heartburm.
- fever.
- dizziness.
- lightheadedness.
- headache.
What does quinidine do to the heart?
Quinidine is a Class 1a antiarrhythmic. It works in the heart to slow down the electrical impulses that make the heart muscle contract and pump blood. During an arrhythmia, heart muscle contractions are irregular. Slowing down the electrical impulses can regulate the heartbeat and stop the arrhythmia.
