"i am a female  with hypothyroidism, post menopause and over 50.  i was at the heaviest in my life gaining over 60 lbs after being diagnosed with my thyroid disorder. i finally found a dr. who would put me on phentermine. i have been on it for a week short of 90 days and i&#039;ve lost 32 lbs. there&#039;s nothing that in my 7 yrs fighting this hypothyroidism that allowed me to lose even 10 lbs. not even cutting my daily caloric intake to less than 1200 calories a day. which my dr. wasn&#039;t at all happy about since she says 1400-1600 is the very least someone should eat.  i am so very happy with the results. i wish of course i could have lost the entire 60lbs i gained when i got the slow thyroid issue. but i am nevertheless very pleased."