Diets also don't stick when you discontinue them.

It would be an incredible advancement if we figured out a reliable and replicatable way to just eat less food, but until then I think a drug that makes you do that is pretty decent.

Is the drug at risk of being discontinued? If so, then can that risk be quantified in any way?

(For comparison: Countless scores of diets are discontinued daily.)

AIDS drugs also don't stick. So?