Manufacturers of infant formulas try to release the product as close as possible in composition to mother's milk. After all, it contains a full set of substances necessary for the baby. On the basis of the cow milk and breast adapts.
Best adapted: "Nan", "Nutrilon", AGR, etc. the bulk of the product are whey proteins, easily assimilated by the body of the baby. The mixture is designed for the little ones under the age of six months.
Less adapted: "Enfamil", "Similac", "impress", etc. In the composition of the mixtures, there is enough casein, which undergoes a special treatment. This product is suitable for use kids after six months.
Partially adapted from: "Baby", "baby", etc. To breast milk, these compounds only partially adapted. To feed babies up to six months. The usual mixture. Due to the high content of protein in the composition, they are recommended for children older than six months. The nutritional value of this product is consistent with the needs of the organism grown toddler.
In addition, there is a unit of the compounds according to the formulas:

- mixture # 1 for babies up to 6 months;
- mixture # 2 – children after 6 months;
- mixture # 3 – babies after 1 year;
- there are mixtures where the packaging says "from birth to 12 months".
The baby was developing well, in a nutrient mixture is added to all trace elements present in human milk. They help children to grow and develop according to age. Often, for the regulation of the gastrointestinal pediatricians recommend to add to the food of infants milk formulas. They help to normalize the metabolism and promote healthy microflora. Milk formulas are recommended for babies suffering from allergic diathesis, deficiency of body weight, disorders of the gastrointestinal tract.
Do not just acquire a large number of packages of the mix, even if it is cheaper. Each baby has its own sensitivity. Starting to feed your child, watch for the reaction. Notice the baby's stool, frequency of regurgitation, cutaneous manifestations.
If there are any deviations from the norm, and they don't pass in a few days you should contact the pediatrician. What symptoms require treatment to the doctor:

- no weight gain;
- a manifestation of allergic reactions;
- changes in the child's behavior: irritability or lethargy;
- after feeding the child again asks to eat;
- sleep disturbance.