How can you tell that six pounds was purely water weight? Currently midway through my second dose and down five pounds myself. Is that water too? What's the real tell that it's genuine fat loss?
There's research out there showing some regain happens, but statistically most people still come out ahead overall. Of course, skip the lifestyle changes and the weight creeps back, landing you in that smaller group that ends up regaining everything.
Speaking personally, I've held at a maintenance amount ever since reaching goal weight. No plans to quit, just staying steady at this point. Two years in now.