because of renewed formular? I'm no pharmacist nor chemist, but my impression with drugs is that the popular names and actual composition are two different thin

because of renewed formular? I'm no pharmacist nor chemist, but my impression with drugs is that the popular names and actual composition are two different things. All they need is approval and if it helps relieve or avoid addiction I'm sure a minor change in, I don't know, isomery or adding a tiny functional extra tail to a big molecule doesn't preclude approval.