There are a range of commercial infant formulas available in New Zealand. These have been developed to contain similar nutrition to breastmilk. All formulas sold in New Zealand conform to the Australia New Zealand Food Standard Code (Standard 2.9.1 – Infant Formula Products). There is no evidence that one brand is better than another.
Cows’ milk formula is usually recommended for healthy babies who are not breastfed. Use an infant formula that’s right for your baby’s age. Your baby could become ill if you feed them a formula intended for older babies. Infant soy formula and other specialised formulas are only suitable for babies with a medical reason to use them, such as having an allergy to cow’s milk. This formula must not be confused with regular soy milk, which does not provide suitable nutrition for babies.
Infant formula is not sterile. It is important to check the expiry date on the formula tin to ensure that the product has not expired. The expiry date applies until the seal is broken. Once the seal of the formula tin is broken, it should be used within 4 weeks.
(KidsHealth, NZ, 2017)