Tell your doctor immediately if any of these unlikely but serious side effects occur: vision changes, eye pain, muscle pain, unusual sweating or shakiness (signs of low blood sugar).
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.
How does quinine affect the body?
Quinine may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.
