I once had a chat with
@Vizzy about purchasing Nembutal.
He told me that you have to go to Tijuana.
He said he would DM me the address because he and his colleagues had purchased certain substances in Tijuana and Nembutal was available too.
He CTB before I got the address off him
I've heard that certain veterinary people in other parts of Tijuana will give you N for a wad of cash, but this is unverifiable to me.