What are the most common side effects of Cymbalta?
The most common side effect of Cymbalta was nausea. Other common side effects included dry mouth, sleepiness, fatigue, constipation, dizziness, decreased appetite, and increased sweating. This is not a complete list of side effects. You are encouraged to report negative side effects of Prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.