"i need to lose 30 lbs. i tried every thing, even the hcg diet. i was so hungry on that diet, it made me gain more weight. i tried phentermine 37.5 mg 7 days ago, and i am down 5 lbs. the first day i took it, i didn&#039;t eat all day long. it was weird and scary at the same time. i just wasn&#039;t hungry at all. my energy level was at the highest i ever felt. i had to keep moving. the next day, my body started getting use to the pill. i don&#039;t night snack any more. my last meal is around 7pm. if i start exercising i will probably lose more weight faster. side effects: thirsty all the time, but that helps me to get my 8 glasses of water intake. sometimes i feel kind of emotional. that&#039;s about it."