My pcp said the Phentermine might help kickstart my sluggish metabolism. Indeed that is what happened it seems. I have been off the led for 1 month and have continued to loose another couple of pounds. PCP thinks periodic times of med will help obtain and maintain. I hope so. My cancer was hormone positive so all most all of the new wonder drugs are hormonal an NOT for me. Phentermine is not hormonal nor is Contrave. Good luck to you! I weigh less now than I did in my 50s.