Phentermine is temporarily used in people who are overweight or obese and who are actively trying to lose weight through diet and exercise. It is temporary because its effectiveness decreases after three to six weeks. Although phentermine is not “addictive”, it produces tolerance over time. Tolerance can be good or bad and occurs due to the body's attempt to create homeostasis (or a predictable balance).
In the case of phentermine, reducing thirst and insomnia may be beneficial; however, loss of appetite, energy suppression is less desired. If phentermine stopped working, tell your doctor. Some people may feel like they want to increase the dose. However, this should never be done without a doctor's instructions.
In reality, you can only use it for 2 or 3 months, at which point you need to give your body a rest. If you expect phentermine to shed those extra pounds like a magic trick, you should abandon phentermine treatment or change the way you think about weight loss. Now that we've looked at possible ways to make phentermine work again, it's worth quickly looking at some of the best practices to get significant long-term results from your phentermine weight loss program. Some researchers believe that drug tolerance through phentermine is due to the fact that there is a limited amount of norepinephrine in the human system and that those limited reserves are depleted with repeated administration of phentermine.
If you're taking phentermine and you've noticed that your appetite suppression and energy increase are lower than they used to be, this report could help you use phentermine to effectively return to losing weight.