Article Plan⁚ Exelon Side Effects and Interactions Common Side Effects of Exelon Common side effects of Exelon include nausea, vomiting, upset stomach, loss of appetite, weight loss, diarrhea, weakness, dizziness, swelling in your hands or feet, joint pain, cough, runny or stuffy nose, increased sweating, drowsiness, sleep problems (insomnia), headache, and shakiness (tremors).​ Serious Side…