Poison is against the rules on most marketplaces. Also, why Cyanide? There are much easier, less risky ways of killing people. If it's for suicide, still, why Cyanide?
[6 Points] SoCoGrowBro:
Apple seeds.
[3 Points] heywhatsu:
i've found that extracting cyanide from cyanide to make more cyanide is good.
Poison is against the rules on most marketplaces. Also, why Cyanide? There are much easier, less risky ways of killing people. If it's for suicide, still, why Cyanide?