Randomized, Blinded, Placebo-Controlled Evaluation of BioAmicus Complete

Inclusion Criteria

• •The child's parents/guardians speak Russian, have been informed about the study's purpose, understand its essence, are aware of their rights, and have signed the informed consent form.
• •Diarrhea or constipation accompanied by colic and/or regurgitation (gastroesophageal reflux, GER).
• •Cutaneous manifestations of food allergy.
• •The child was born at term or preterm, but not before the 7th month of gestation.
• •Age at the time of parental informed consent: from 1 month to 4 months and 28 days.
• •The child is on breastfeeding, formula feeding, or mixed feeding.
• •The child has no other health conditions that would require a specialized diet.
• •The parents/guardians are able and willing to regularly complete the proposed observation diary form.