Drawback of Bottle Feeding.

Unlike mother's milk, cow's milk lacks vitamin C. Bottle-fed babies must therefore have vitamin C added to their diet. Mother's milk and cow's milk contain vitamins A and D. But most doctors prescribe extra amounts of these vitamins for both breastfed and bottle-fed infants to ensure an adequate supply.
Doctors may also prescribe added iron in an infant's diet after the first three or four months. Vitamins are given to a baby in the form of drops or as part of the formula. Many commercially prepared formulas are vitamin enriched. Iron may be given in the form of drops. But it is also present in iron-fortified cereals and in some of the other solid foods a baby may be fed after about the second month.
At about 6 months of age, a baby may be ready for weaning-that is, learning to do without milk from the breast or bottle. Babies differ in their readiness for weaning. Some children do not show a willingness to give up breast- or bottle-feeding until they are 18 months of age or older. A mother should wean her child over a period of several weeks or months. In preparation for weaning, she may encourage the baby to drink milk from a cup. Most babies can learn to drink from a cup by the time they are 6 or 7 months old.