# The Tryptophan in Food (England) Regulations 2005, Regulation 4: Prohibitions


Subject to regulation 5, no person shall —
(a) add tryptophan to food;
(b) sell, or offer for sale, food containing tryptophan; or
(c) expose for sale food containing tryptophan.

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Source: https://www.legislation.gov.uk/uksi/2005/2630/regulation/4 (the official version)
Page: https://openlegislation.uk/tryptophan-in-food-england-regulations-2005/regulation-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.