So, I've read that Nembutal is no longer being manufactured. I truly don't know if this is true or not. But, there are many other pentobarbital drugs still being made for euthanasia sold under different brand names. They're all still controlled substances, of course. They're the same as Nembutal, *possibly* with insignificant minute changes to differentiate them. As barbiturates they all work the same way. Google searching should lead you to the names they're sold under. If you find them, how do you plan on acquiring them?