I am new to SparkPeople, coming from Weight Watchers. I have an appointment on Thursday at a Womens Weight Loss Clinic where they set you up on a weight loss plan and also prescribe Phentermine if you meed the guidelines. I guess I am nervous about the whole thing. Anyone who is on Phentermine that can offer some information on what it's like, the side effects, any hellpful tips while on it, please advise. Thanks ! PS I am currently on Topomax for migraines and when I first started taking that about 10 years ago, did experience weight loss.