appropriate medical certificatemeans 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;
food containing tryptophanmeans food intended for human consumption which does not comply with paragraph (1) of regulation 3 in that tryptophan has been added to it otherwise than in accordance with paragraph (4)(a) of that regulation;
hospitalincludes a clinic, nursing home, or similar institution;
pharmacistmeans a person lawfully conducting a retail pharmacy business within the meaning of section 69 of the Medicines Act 1968;
the Actmeans the Food and Drugs (Scotland) Act 1956;
tryptophanmeans dextrorotatory tryptophan, laevorotatory tryptophan, or racemic tryptophan, or any salt or peptide prepared from any of those forms, and references to adding tryptophan to food–