"i am only on my 3rd day with wellbutrin sr (150mg once a day for now) but i really feel good about this medicine already! i&#039;m brand new to antidepressants but had been on lexapro for 2 weeks prior to getting the wellbutrin prescription and i really did not like the lexapro. with it i had been having a headache everyday, tense muscles, felt emotionally numb, was tired all the time, couldn&#039;t focus, and absolutely could not reach orgasm even having sex everyday (which was extremely frustrating). since switching 3 days ago, i have had more energy, more ability to focus, i feel happier about life as a whole, and i have been really productive with school work (i&#039;m a college student). i also have noticed that i&#039;m not feeling as hungry. good feels."