Pretty sure that as of recent years, meth is often mixed with fentanyl without being disclosed to a user or probably even a dealer.

But it also funny to see how people say that this should be done yet they somehow forget that (allegedly) it is not government that sells drugs but drug cartels that do. I bet they wouldn’t mix birth control into drugs at all. Why would they? That in best case for them does nothing for a higher price of production, and in worst case it will deter customers. Shit’s never going to happen.