Det anføres, at doxycyclin- premixprodukter til svin med en anbefalet dosering på 10 mg/ kg en gang dagligt i 5 dage har været godkendt i EU siden 1985.
Within the EU doxycycline-based premix products for pigs at recommended dose rates of 10mg/ kg once daily for 5 days are stated as having been authorised since 1985.