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El Codex acuerda nuevas orientaciones para aclarar las menciones de alérgenos «puede contener»
El organismo internacional de normas alimentarias afirma que las advertencias de precaución deben basarse en la ciencia y usarse después de aplicar buenas medidas de gestión de alérgenos.
The phrase “may contain” is familiar on food packaging, but its meaning has not been consistent across products and countries. On 7 July 2026, the Codex Alimentarius Commission agreed to adopt new international guidance intended to make precautionary allergen labelling more science-based and consistent.
Codex is the food standards body established by the Food and Agriculture Organization of the United Nations and the World Health Organization. Its texts are voluntary international benchmarks, so this announcement is not, by itself, a new rule for every shopper or food business. It is a common framework that governments can use when developing or updating national requirements.
What the guidance changes in principle
Precautionary allergen labelling, or PAL, is meant to warn about an unintended allergen that could remain in a food even when it is not an ingredient. The FAO says the new guidance should be used only when the residual risk has been scientifically assessed and cannot be adequately controlled through good allergen-management practices.
That puts the warning after the preventive work, not in place of it. Shared equipment, storage, transport and handling can all create opportunities for unintended transfer. Codex’s approach is designed to help food businesses and regulators distinguish a meaningful residual risk from a generic statement added without a documented assessment.
What it means when you read a label
For home cooks, the immediate habit stays simple: read the full ingredient and allergen information every time, and do not treat a “may contain” statement as interchangeable with an ingredient list. The new Codex text aims to make those precautionary statements more useful over time, but it does not replace the rules or official advice that apply in the country where a food is sold.
The guidance was agreed as an annex to Codex’s General Standard for the Labelling of Pre-packaged Foods. The decision was part of the Commission’s 49th session in Geneva, held from 6 to 10 July 2026.
Sources
Organización de las Naciones Unidas para la Alimentación y la Agricultura, «El Codex acuerda nuevas orientaciones para aclarar las menciones de alérgenos “puede contener”» (publicado el 7 de julio de 2026):
https://www.fao.org/newsroom/detail/global-food-safety-standards-body-codex-adopts-new-guidance-on--may-contain--allergen-labels/en