"always been 80 lbs since high school. no appetite, always ate in small portions. taken this medication before but the 1st time i took in 2011 i gained weigh but also gained esophagus spasms from all the gorging i did so it&#039;s now permanently a side effect, yay. i started taking it again feb 22, 2017 weighed in at 80.6 lbs, as of today, march 23, 2017, i&#039;m weighing in at 100.4. i haven&#039;t taken it in 3 days to see if i can keep the appetite and use when needed. it&#039;s a great weight gain but there are side effects. mine include no period, no sex drive, severe cold night sweats, hot flashes, the esophagus spasms, &amp; swelling of arms &amp; legs when active. these are the pros that some may consider cons- constantly hyper."