Wellbutrin Side Effects: Yes, I developed a severe sore throat when I started the Welbutri http://www.medications.com/effect/view/6683 Yes, I developed a severe sore throat when I started the Welbutrin. I failed to mention the other side effects that I noticed while I was on Welbutrin XL 300mg. Dizziness, nausea, HEADACHES EVERY DAY!, sore throat, neck pain, back pain, very sore muscles, I can relate to that.. Wellbutrin is a no more than legal ampheta Mon, 30 Jun 2008 20:55:21 -0400 http://www.medications.com/effect/view/6683?item=9671 I can relate to that.. Wellbutrin is a no more than legal amphetamine. Bupropion belongs to the chemical class of aminoketones and is similar in structure to the stimulant cathinone, to the anorectic diethylpropion, and to phenethylamines in general.CATHI http://www.medications.com/effect/view/6683?item=9671