Clinical Trial for Valuation of the Effectiveness of Lactoferrine in the Prevention of Sepsis in New Premature Born. Bimonitorization of the Antinflammatory Mechanisms, Antioxidants and the Intestinal Microbiote.

The pharmacy service of the hospital will provide the established dose of lactoferrin, according to the regimen of administration of 150 mg / kg / day (maximum 300 mg / day), as well as that of placebo. Both treatments will be administered in liquid form, in the least amount possible. Both the administration of lactoferrin and placebo will be carried out enterally, orally or by nasogastric tube. The intervention will be done in the first 72 hours of life, once a day, and for 4 weeks, extending to 6 weeks in the newborns with EG ≤ 28 weeks and / or birth weight ≤ 1000 gr, or until discharge if this happens before.

Enteral administration of placebo with similar visual and gustatory characteristics in the first 72 hours of life, and for 4 weeks (6 weeks in the RN ≤ 1000 gr and / or EG ≤ 28 weeks).