SMA Follow on Milk complement the weaning diet from 6 months. A follow on milk providing the important nutrients your growing baby needs, Omega 3 & 6, iron and vitamin D. Iron helps brain development and vitamin D supports growth of bones and teeth. Use as part of a mixed weaning diet. IMPORTANT NOTICE SMA Follow on Milk is only suitable for babies over 6 months as part of a mixed diet. It should not be used as a substitute for breast milk during the first 6 months of life. The decision to start weaning or to use follow on milk before 6 months, should be made only on the advice of a doctor, midwife, health visitor, public health nurse, dietitian or pharmacist, based on your baby's specific growth and development needs.