"hey everyone....i posted around day 5 of taking....it is down below (which gives you my background with pcos &amp; my journey). i started phentermine 37.5 at 197lbs on dec. 3rd. i did weigh myself on day 12 and i was down to 189 lbs. i think that pretty much says it all. i am not really experiencing the main side effects (dry mouth, jitters, insomnia). i can drink coffee, and i do my best to keep to 1,200 calories a day. i do not exercise. i sit at a desk all day, then nanny for 4 hours in the afternoon. the only side effect that is a little annoying, is constipation. this is troublesome because i normally have stomach trouble. i am trying prune juice as of today."