Best scientific suicide method?
Knock yourself unconscious with chloroform? a powerful anesthetic or tranquilizer? and only then set a timed poison pill to release the poison inside the body? or perhaps a smart gun would be easier for americans?

I was thinking of more cliche things like nembutal, cyanide, argon, helium/laughing gas and hoping those alone would be enough to knock me unconscious on their own. Nembutal I kinda found it but I need to order 120 boxes with pills in them, they're not in liquid form.
Cyanide I don't know where to buy or how to produce
And for the inert gases I heard they add air to save on costs.