Side effects of Wellbutrin SR include agitation, constipation, dizziness, dry mouth, insomnia, nausea, rash, sweating, and/or weight loss
. Side effects
of Wellbutrin XL
may include abdominal pain, agitation, anxiety, constipation, diarrhea, dizziness, dry mouth, heart palpitations, increased urination, insomnia, muscle soreness, nausea, rash, ringing in the ears, sore throat, and/or sweating.