"Multiple clinical trials show us that Duromine (Phentermine) can affect the central nervous system, gastrointestinal tract and cardiovascular system. However, there has been established no connection between the use of Duromine and change in the liver functions."
Don't think liver support will be necessary as long as you have healthy liver . Best to get your liver enzymes checked nce you're done with your course and see how it affected you , and then from there you can decide to use liver support or not .
Life's a journey of living and learning , inspiring , helping and most if all discovering yourself