With every drug comes some sort of side effect, no matter what a manufacturer may claim. However, some companies see things differently and whether or not they ring true is something you have to decide for yourself. One such company says that there are no side effects of phentermine's generic counterpart and even give some information on their website to reassure customers that this diet pill is safer.
Whether it's true or not, I can't say because I don't take diet pills. I find them to be bad for my body and mind. However, if you're a big believer in using a diet pills to lost weight, always do your research and check out the information on the product before you buy it. It's always better to be safe, than sorry.