Amygdalin is hydrolysed by two enzymes (amygdalin hydrolase and prunasin hydrolase) most properly in crushed, moistened kernels, causing the formation of HCN and glucoseAn antidotal combination of inhaled amyl nitrate and intravenous sodium nitrite and sodium thiosulfate will often be indicated. The IPCS/CEC (1993) critique of antidotes for cyanide