Reactions known as 'MSG symptom complex' are not allergic reactions, even though they can include headache, flushing, body tingling, nausea, muscle aches, chest pain or heaviness, and heart palpitations.
Notes on verification
Confirmed by Mayo Clinic, FDA, and peer-reviewed sources describing MSG symptom complex as a non-allergic reaction distinct from true food allergies. [tier=gold indep_score=1.0 clusters=3 claim_tier=notable]
Sources
- Monosodium glutamate, also called MSG: Is it harmful? (seed:food_and_diet)
- https://www.fda.gov/food/food-additives-petitions/questions-and-answers-monosodium-glutamate-msg (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S0091674997800085 (corroboration)
- https://quality.healthfinder.fl.gov/health-encyclopedia/HIE/1/001126 (corroboration)