"am in uk.... phentermine is not a national health prescription drug,  so i have had to get mine through a slimming and diet clinic.   started at 24 st 9 lbs....  my doctor weighs and takes my blood pressure every 2 weeks..  after 2 weeks,  lost 19 lbs,  after 4 weeks lost another 7lbs, after 6 weeks lost another 9lbs.   lost 2.5 stone so far and feeling great apart from constipation.   i am taking favored.   i also get prescribed a water tablet and a multi vitamin.   i pay &pound;84 every 4 weeks which may seem a bit steep but i feel it&#039;s worth it...."