There are some toxic substances and antinutritional factors in flaxseed, such as antivitamin B6 factors and cyanogenetic glycoside, Which limit the application of flaxseed.

亚中毒性物质和抗营养因子（如抗素B6因子、氰糖苷等）的存在，尤氰糖苷的毒性限制了亚的使用。