Built a tolerance? Phentermine does not feel as effective
I’ve been on phentermine for 6 months and have had great results! First time in my life I’ve been able to maintain a calorie deficit and I lost 20lbs in 4 months. I ramped up to 37.5mg quickly. It was really great not being distracted by hunger and thoughts of food, while it lasted.
My weight loss has plateaued, and I’ve lost 0 lbs in the last 2 months. I can feel my appetite increasing again. It’s been harder to maintain the deficit, and I’m often going over (still well within maintenance zone so no weight gain). I’m at the max dose so my NP says the next step would be to add in topiramate (brand name Qsymia) but I’m concerned about the side effects.
Has anyone else experienced a plateau or appetite increase while on phentermine? Does your body develop a tolerance?