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

亚毒性物质和抗营养因子（如抗生素B6因子、生氰糖苷等）的存在，生氰糖苷的毒性限制了亚的使用。