Amygdalin is hydrolysed by two enzymes (amygdalin hydrolase and prunasin hydrolase) most successfully in crushed, moistened kernels, leading to the formation of HCN and glucose An antidotal mix of inhaled amyl nitrate and intravenous sodium nitrite and sodium thiosulfate tend to be indicated. The IPCS/CEC (1993) assessment of antidotes for https://cyanolab.net/potassium-cyanide/