"i am updating my status. i stopped taking phentermine on 5/3/17 because my prescription ran out and i didn&#039;t set my doctors appointment in time. it has been 3 days and i have been experiencing constipation, which is weird because i still drink my detox. has anyone ever experienced that issue? my appointment is 5/15 where hopefully my doctor will prescribe me another months worth in the mean time i will be drinking the detox eating right and working out 7 days a week in order to lose more weight by the time i see my doctor. currently i weigh 219 and my goal is to weigh 215 by 5/15/17."