The most important thing to remember: it's not a weight loss drug, it's a type 2 diabetes treatment that has a side effect of weight loss. You take it as an injection once a week, and it's based on semaglutide, a molecule that affects appetite by mimicking a natural hormone. So yeah, you eat less, but that's not the initial goal - it's just what happens.
The difference from other diets or even old appetite suppressants is that it really changes your relationship with food. You have less desire to eat, and even when you do eat, you feel full faster. Other weight-loss stuff is more like vitamins, supplements, or pretty aggressive chemical appetite suppressants. Ozempic acts directly on the brain mechanisms that control hunger. But heads up: the moment you stop, your appetite goes back to normal, so it's not a permanent miracle solution.
On availability, it's gotten complicated in France because tons of people asked for it without having diabetes, just to lose weight. That created shortages, and pharmacies sometimes have trouble keeping it in stock regularly. If your doctor prescribes it for you, they know why and have medical reasons - trust their diagnosis rather than the miracle stories you hear everywhere.