This is a three-arm, double-blind, placebo-controlled study to investigate the safety of Lactobacillus salivarius AP-32 and Bifidobacterium animalis subsp. lactis CP-9 used individually in healthy infants.~Infants will be given the content of one capsule (mixed in infant formula or breast milk) twice daily (morning and evening) for 15 weeks. Follow-up visits will take place at study days 14±3, 42±3, 70±4 and 105±4.~Caregivers will keep a diary of the volume of formula intake/minutes of breastfeeding, stool frequency and consistency (hard, formed, soft/paste or loose/watery), symptoms of digestive tolerance (regurgitation and flatulence), sleeping time, crying/fussing time and episodes for 3 days before each visit. At each visit, the research team will review the diary and conduct physical examination, including anthropometric measurements (weight, recumbent length, and head circumference).~Fecal samples will be collected prior to the first administration of the assigned study product and at the end of study for microbiota analysis.~Adverse events (AEs) will be assessed based on inquires to the caregivers. AEs will be classified as related or unrelated based on a relationship to study product intake according to the investigator.
This is a three-arm, double-blind, placebo-controlled study to investigate the safety of Lactobacillus salivarius AP-32 and Bifidobacterium animalis subsp. lactis CP-9 used individually in healthy infants.~Infants will be given the content of one capsule (mixed in infant formula or breast milk) twice daily (morning and evening) for 15 weeks.