"i am 31 and have been on meridia since april 29, 2009. i have to date lost 28lbs. i have not experienced any major side effects besides dry mouth, which usually goes away with water. the pills are expensive since they are not covered by my insurance. therefore i don&#039;t plan on being on them for more then 5-6 months. i work out a few times a week and really watch what i eat. if you don&#039;t change your eating habits you will definitely gain all the weight back. i wish you all success."