This regulation determines restrictions on the use of drugs for animals. The State Veterinary Service shall monitor compliance with the present regulation. For animals of all species, from which food products of animal origin are obtained, as well as for sport animals, it is prohibited to use drugs containing estrogenic, androgenic of gestogenic substances, except in cases provided in paragraphs 13 and 15 of the present Regulation. For cows, regardless of the method of administering and the dose