"i have been on phentermine 37.5 for a week. i am sticking to a 1200 cal diet, walking every night. i haven&#039;t had any bad side effects except dry mouth, but i count that as an advantage. when i started the pill i weighed 407lb and today i weigh 395lbs. i know it isn&#039;t a fix all, but i seriously needed help curbing my appeite, i don&#039;t think about food, and even have to force myslef to eat (i do make my self eat some, i want to learn to eat properly not starve myself)"