amber
E621
Reported migraine and MCAS trigger in sensitive individuals.
Niaz et al. EXCLI J 2018 (review); Yang et al. Nutrients 1997
Low Tox Gear · Scanner
Chang's Oyster Sauce 280mL
Is Chang's Oyster Sauce 280mL low tox? Our scanner flagged 3 ingredients (3 in the caution tier) on its published label, screened against our 237 source-cited chemical rules.
3 caution
3 ingredients flagged
What we flagged
amber
E627
MSG-family flavour enhancer. Always paired with MSG; same trigger profile.
amber
E631
MSG-family flavour enhancer. Always paired with MSG; same trigger profile.
Full ingredients (from label)
WaterOyster Extract 36%SugarSaltThickener (1422)Naturally Brewed Soy Sauce (SoyBean, Water, Salt, Wheat Extract)Flavour Enhancer (621)Food Acid (330)Flavour Enhancers (627,631).
How this analysis is generated
Each ingredient on this product's published label is matched against our 237 source-cited chemical rules, each documenting a concern from peer-reviewed research and regulatory sources. Severity tiers:
- Avoid (red) — banned or restricted in the EU, UK or Canada but still legal in the US, IARC-listed, or strong contact-allergen evidence.
- Caution (amber) — regulatory caution, contamination risk, or condition-specific irritant.
- Mild (green) — low concern but commonly avoided in low-tox formulations.
Each flag links to its primary chemical-level source, and each condition pill links to a PubMed-indexed paper that discusses the chemical class in the context of that condition. Every citation is a real peer-reviewed paper — we don't link to Wikipedia or PubMed search pages. Some pairs use a topically-broad paper (e.g. a fragrance-allergen patch-test review) rather than a single-pair study where the literature is thin. The full evidence chain (chemical → mechanism → condition → paper) is one click away.
This is automated analysis of a published label, not medical advice — always verify the label yourself before changing products. Methodology and source list at scan.lowtoxgear.com.