The Lab
Specimen No. 0066
AvoidDerivedfood additive

MSG (Monosodium Glutamate)

monosodium glutamate · msg · e621

Flavor enhancer that amplifies umami taste. While the FDA classifies it as GRAS, some research and a subset of individuals report sensitivity symptoms. Context and quantity matter.

high confidence
Researched April 18, 2026

Concerns

  • "MSG symptom complex" — headache, flushing, sweating reported by some individuals (though double-blind studies have not consistently reproduced this)
  • May contribute to excess food intake by enhancing palatability
  • Free glutamate may have different effects than protein-bound glutamate [inference]
  • Research on neurological effects of excess free glutamate is ongoing [inference]

Commonly found in

Fast foodChipsRamenRestaurant foodSoy sauceProcessed meats

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

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LabelCleared verdict badge: MSG (Monosodium Glutamate) — Avoid
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