"hello! i started phentermine on 6/15/15. i am 28 years old, 5&#039;5 and 200lbs. i have been taking it around 9-10 am. first two nights i did not sleep very good at all. today is 6/18 and will be day 4, and i&#039;ve lost 4 pounds. i slept better last night with help of a sleep aid. i have not noticed many side affects. i don&#039;t feel an increase in energy (not sure if it takes awhile), have not had any headaches or the shakes. i&#039;m not counting my calories, but i am watching my portions, not eating a big meal before bed (even if it&#039;s technically our dinner), and cut out a lot of junk. i have already cut out fast food, soda pop, and starbucks "