# The Tryptophan in Food (England) Regulations 2005, Regulation 5: Exceptions from prohibitions


(1) Food containing tryptophan may be sold or offered for sale —
(a) by a pharmacist; or
(b) in the course of the activities of a hospital,
to a person in respect of whom there is an appropriate medical certificate or to someone acting on that person’s behalf, and —
(i) any person may add tryptophan to food intended for sale in those circumstances; and
(ii) any person may sell, or offer for sale, food containing tryptophan for the purposes of its being sold in those circumstances.
(2) Regulation 4 shall not apply in respect of —
(a) laevorotatory tryptophan added to any infant formula or follow–on formula;
(b) laevorotatory tryptophan added to any processed cereal–based food or baby food; or
(c) laevorotatory tryptophan, its sodium, potassium, calcium or magnesium salts or its hydrochloride, added in compliance with Directive 2001/15/EC to any food for a particular nutritional use referred to in the Annex to that Directive,
if that added substance complies with the purity criteria specified for that substance in the European Pharmacopoeia.
(3) Regulation 4 shall not apply in respect of laevorotatory tryptophan added to any food supplement if —
(a) the laevorotatory tryptophan complies with the purity criteria specified for that substance in the European Pharmacopoeia; and
(b) the recommended daily dose for that food supplement does not exceed 220 mg.

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Source: https://www.legislation.gov.uk/uksi/2005/2630/regulation/5 (the official version)
Page: https://openlegislation.uk/tryptophan-in-food-england-regulations-2005/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.