"i am a 57 year old female and about 30 pounds over weight. at first it was great.  side effects were being tired and in a fog.  that got better over 5 or 6 days.  i had to use extream caution driving because i had trouble concentrating.  i lost 5 pounds in 10 days. on day 10 i broke out in hives and had a fever.  i stopped taking the medication.  i also have been taking blood pressure meds and primerin for hot flashes for over a year.  i stopped all meds and took benadryl for 5 days.  i have been in contact with my doctor and am hoping it was not due to qsymia because it was working.  just not sure if it&#039;s safe for me."