This is my second time taking duromine, first was in 2011 and i had good results, constant weight loss for 2 to 3 months lost about 15 kg... Managed to climb back up to 135 got prescribed 30mg for a month which is great, about 4 days in and i was down to 130!! BUT.... I jumped on the scales tonight and im 131??? Whats happening? Is this normal? How could i have gained weight? This didnt happen to me last time.. Am i now immune to duromine?