Hi, I was on it (10mg) for a total of 3 weeks and lost 5lb, I've lost 2 lb since that time but I had to suspend using Meridia until February. I have surgery (not related to weight loss) in January.
My weight gain started after the birth of my first born, I lost all the weight but slowly started gaining again and I didn't know why. For years I struggled with my weight and had another child, until I found a great doctor that finally diagnosed me with Hypothyroidism. However, since I was over 225lb (at that time) I needed a boost so I asked to be put on Meridia 10mg.
You still have to watch what type of foods you eat and exercise but I always told myself that if I could just get below 200lb I would be excited and encouraged to continue. Well, I'm not there yet, although seeing fewer than 225lb was encouraging.
Keep me posted on how you're doing.
Hepeful