"i started taking phentermine 37.5mg in july 2015. my weight loss was very slow in the first month only about 5 lbs or so despite a daily workout routine. after about six weeks the weight just started falling off. i am in my third month and have gone from starting at 247lbs to 220lbs a total of 27 pounds...i have not exercised the past month due to back problems yet i still have no appetite...side effects are dry mouth, constipation and unpleasant taste in my mouth.  insomnia is bad however even though i don&#039;t get much sleep i am never tired either.  i say the benefits outweigh the side effects! my mood is much improved and i have no taste to drink alcohol or smoke! it&#039;s definitely worth a try"