Tyramine L-tyramine
Tyramine is a major component of what triggers a headache in the body. When combined with nitric oxide it creates a chemical called CGRP. CGRP is the chemical that causes the blood vessels of the trigeminal-vascular system to swell and put pressure on the nerve endings which results in the pain felt as a migraine headache. Protein-rich foods which have been fermented contain high levels of tyramine as do others including cheeses, fruit, processed foods, meat and fish, soy nuts and chocolate. Keep in mind that not everyone is affected by any one trigger. For a list of foods containing tyramine see