"i was 312 pounds when i started taking phentermine 37.5 mg 11/2016. i took it for two months and only lost 12 pounds. i missed my appointment in february because my mom passed away. i went back to the doctor and and weighed in at 306 pounds on april 6, 2017. today is may 7,2017 and i am 300. i lost down to 299 but have gained a pound because i haven&#039;t been drinking water and i haven&#039;t been active. overall i have lost 6 pounds in a month. that isn&#039;t bad for not exercising. the medicine is wonderful but i am experiencing extreme dizziness to the point i am nearly fainting. i believe i need to drink more water. i have taken this medicine before and never had this problem but i believe it&#039;s because i am dehydrated. drink water!!!!!!"