Clinical efficacy of the LUX ACTIVE diet in dogs with epiphora
Epiphora is recognized as excessive lacrimation following damage to the nasolacrimal canal. It generally occurs from 2-3 months and is bilateral. Although there are some predisposing factors, clinical and in vitro research have shown that this lacrimation, like any expulsive mechanism, can also be a consequence of a chronic intake of food contaminated with pharmacological residues such as oxytetracycline, legally and widely used in intensive farming of chickens and turkeys. It has also been observed that this antibiotic is able to induce pro-inflammatory, toxic and geno-toxic effects in a relatively rapid time (24-48h).
http://www.jarvm.com/articles/Vol15Iss2/Vol15%20Iss2Centenaro.pdf