Several vaccines contain Monosodium Glutamate (MSG).
MSG is used as a food additive but is also used as a stabilizer to help vaccines remain unchanged when exposed to heat, light, acidity or humidity, according to the CDC.
MSG is known to be an “excitotoxin,” which is a term used to describe a class of chemicals (usually amino acids) that over-stimulate neuron receptors in the brain, causing them to die.
MSG consumption through foods is notorious for causing headaches in some people and can also cause fatigue, disorientation and heart palpitation, per the Mayo Clinic.