{
  "url": "https://openlegislation.uk/tryptophan-in-food-regulations-1990/regulation-2",
  "json_url": "https://openlegislation.uk/tryptophan-in-food-regulations-1990/regulation-2.json",
  "legislation": "uksi/1990/1728",
  "legislation_title": "The Tryptophan in Food Regulations 1990",
  "legislation_url": "https://openlegislation.uk/tryptophan-in-food-regulations-1990",
  "path": "regulation/2",
  "kind": "regulation",
  "number": "2",
  "heading": "Prohibition on sale, etc of food containing tryptophan",
  "text": "(1) Subject to paragraph (4) of this regulation, the addition of tryptophan to food intended for sale for human consumption is prohibited.\n(2) Subject to paragraph (4) of this regulation, the sale or offer for sale of food containing tryptophan is prohibited.\n(3) The exposure for sale of food containing tryptophan is prohibited.\n(4) Food containing tryptophan may be sold or offered for sale by a pharmacist or 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\n(a) any person may add tryptophan to food intended for sale in those circumstances for human consumption; and\n(b) any person may sell, or offer for sale, food containing tryptophan for the purposes of its being sold in those circumstances.\n(5) Subject to paragraph (6) of this regulation, a person who contravenes or fails to comply with paragraph (1), (2) or (3) of this regulation commits an offence and shall be liable, on summary conviction, to a fine not exceeding level 5 on the standard scale.\n(6) A pharmacist or a person acting in the course of the activities of a hospital who contravenes or fails to comply with paragraph (2) of this regulation by reason only that a document purporting to be the appropriate medical certificate is not genuine does not commit an offence if, having exercised all due diligence, he has reasonable cause to believe that the document was an appropriate medical certificate.\n(7) In this regulation —\n“appropriate medical certificate” means a certificate in writing given by a registered medical practitioner that a person requires food to which tryptophan has been added to treat a condition from which a registered medical practitioner has diagnosed him to be suffering;\n“food containing tryptophan” means food intended for human consumption which does not comply with paragraph (1) of this regulation in that tryptophan has been added to it otherwise than in accordance with paragraph (4)(a) of this regulation;\n“hospital” includes a clinic, nursing home, or similar institution; and\n“pharmacist” means a person lawfully conducting a retail pharmacy business within the meaning of section 69 of the Medicines Act 1968.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "1968 c. 67."
    }
  ],
  "outstanding_effects": [
    {
      "type": "words substituted",
      "affecting": "uksi/2003/3207",
      "affecting_title": "The Processed Cereal-based Foods and Baby Foods for Infants and Young Children (England) Regulations 2003"
    },
    {
      "type": "words substituted",
      "affecting": "wsi/2004/314",
      "affecting_title": "The Processed Cereal-based Foods and Baby Foods for Infants and Young Children (Wales) Regulations 2004"
    },
    {
      "type": "words substituted",
      "affecting": "uksi/2002/1817",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (England) Regulations 2002 (revoked)"
    },
    {
      "type": "words inserted",
      "affecting": "uksi/2002/1817",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (England) Regulations 2002 (revoked)"
    },
    {
      "type": "inserted",
      "affecting": "uksi/2002/1817",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (England) Regulations 2002 (revoked)"
    },
    {
      "type": "words inserted",
      "affecting": "uksi/2002/1817",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (England) Regulations 2002 (revoked)"
    },
    {
      "type": "words inserted",
      "affecting": "uksi/2002/1817",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (England) Regulations 2002 (revoked)"
    },
    {
      "type": "words substituted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    },
    {
      "type": "words inserted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    },
    {
      "type": "inserted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    },
    {
      "type": "words inserted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    },
    {
      "type": "word omitted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    },
    {
      "type": "words inserted",
      "affecting": "wsi/2002/2939",
      "affecting_title": "The Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) (Wales) Regulations 2002"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1990/1728/regulation/2",
    "retrieved_at": "2026-10-29T15:08:02.514589+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}