"i started take this medication on 4/6/10 and have so far as of today have lost 10 lbs...i love it. for the first time i did experience the heart palpitations, which scared me a little bit. the next day they were gone. i would recommend this medication to anyone. my goal is to lose 50lbs and i will agree my focus is great and i have not experienced any jitters or problems falling asleep. my doctor has me taking the medicines on a time schedule, which is at 1pm, then 4pm and last at 7pm with a b12 shot every 2 weeks. i have experienced dry mouth but i just upped my water intake since i am not a big fan of water. i do not eat any high calorie foods at all. i only eat chicken breast (deli) about 3 slices with some veges and have water."