What might be the side effects if taking Cymbalta and vyvance mix?

Mixing Cymbalta (duloxetine), an antidepressant, with Vyvanse (lisdexamfetamine), a stimulant for ADHD, can lead to several side effects. Potential risks include increased heart rate, elevated blood pressure, and heightened anxiety or agitation. Additionally, there may be an increased risk of serotonin syndrome, a potentially life-threatening condition characterized by symptoms such as confusion, rapid heart rate, and excessive sweating. Always consult a healthcare professional before mixing medications.