Prohibition of administration to animals of beta-agonists or hormonal substances
5. (1) Subject to paragraph (2) below, no person shall administer or knowingly cause or permit to be administered to an animal any—
(a)beta-agonist or hormonal substance; or
(b)product which contains a beta-agonist or hormonal substance.
(2) The prohibition in paragraph (1) above shall not apply to the administration of a product which is, or which contains, a beta-agonist or a hormonal substance if that product complies with the requirements of regulation 25 and is administered in accordance with regulation 26, 27 or 28, as appropriate.