"day 1 on contrave, i feel dizzy, nauseous, and tired. my heart is beating rapidly, and i am wishing i hadn&#039;t started this today. i don&#039;t think i can push through theses side effects that are supposed to subside. i had been taking phentermine for the last few months, with great success. my doctor said i can&#039;t stay on the phentermine long term, so we switched to contrave. not sure what to do from here about the side effects being so severe."