"i need to lose 20 pounds &amp; it is not coming off with diet &amp; exercise.  doctor prescribed contrave.  i read many reviews before taking &amp; was hopeful that i would not have side effects. i have taken wellbutrin 150 xl with no problem. before taking my first tablet i had a breakfast of greek yogurt &amp; strawberries followed by 2 cups of black coffee &amp; 8 oz of water.  i took the tablet at 9 am.  by 10 am i had a strong pressure headache, felt dizzy and was unable to concentrate.  by 11 am feeling nauseous.  tried sipping water and a few crackers but by 11:30 am was vomiting violently and was unable to leave the bathroom for the next 3 hours.  fierce stomach cramps started around noon followed by diarrhea.  headache worsened. sleepless night. yikes"