Cyanide Pills for emergency CTB

[Wayfaerer]

I'm interested in creating a cyanide pill to keep in my mouth in case I am ever involuntarily committed. I'd imagine that cyanide could be sourced from the dark web and the capsules (preferably glass) could be fabricated somehow. Do you think this could be possible?

EDIT: Meant to post this on the main board so do not reply please.