"i took phentermine 30mg for 60 days and lost about 30lbs. i stopped on 3/12, which is about 1 month and 1 week ago. i have since lost 46.4lbs total. so i lost an additional 16.4lbs since being off the medicines. it did help me lose a lot of weight in the beginning but i never had extra energy and never felt like i wasn&#039;t hungry. so when i didn&#039;t feel any effects i was going to stop for 10 days and then go back on. i stopped and filled my script for the next 30 days but saw that i still lost 3lbs in that first week off. i then decided not to take the medicines at all. i stick to a strict calorie diet of 1500cals each day and i exercise 30mins a day, everyday. i also lift weights every other day. you must change your diet and exercise."