I'm not quite so harsh as AAP. Yes it's a stimulant, but it's not speed by a LONG shot. It's schedule IV, lower schedule than gear actually. I've used it before, it's a great diet aid, but like any other diet aid, it won't work if you don't actually DIET and exercise. I find it's best on carb cravings, I like to cycle it two weeks on/two off with my regular ECA stack. You can b/c tolerant to it, but severe addiction is unlikely. Then again, I've never had a problem with addiction so it could be worse for some others. If your wife is already exercising and on a good diet, and is in decent shape, just needs a little boost, phentermine can be a good addition. If she's going to use it in place of hard work or diet, forget about it.