Formula Feeding: A Complete Guide for New Parents

Formula feeding is a valid, loving choice, whether it is your first choice, a supplement to breastfeeding, or a transition you have made for any reason. This guide covers everything you need to know to formula feed safely and confidently.

Choosing a formula

For most healthy full-term babies, a standard first infant formula is all that is needed. In most countries, all formula must meet minimum nutritional standards, so the expensive versions are rarely better for baby than the standard ones. The main difference is marketing.

If your baby shows signs of a cow's milk allergy (persistent rash, blood in stool, significant reflux, or severe eczema) speak to your GP or health visitor before switching to a specialist formula.

How much formula does baby need?

As a very general guide, babies need around 150 to 200ml of formula per kilogram of body weight per day in the early weeks. So a 4kg baby would need around 600 to 800ml per day, spread across 8 to 10 feeds.

The best guide is your baby's hunger cues, weight gain, and the number of wet nappies. Expect 6 or more wet nappies per day from day five onwards.

Preparing formula safely

Always follow the instructions on the packaging. Formula must be made up fresh for each feed using water that has been boiled and cooled to at least 70°C. This temperature is required to kill any harmful bacteria that may be present in the powdered formula.

Never use a microwave to heat formula, as it can create hot spots that can burn baby's mouth.

Anti-colic bottles with specialised venting systems can help babies who swallow air during feeds and experience discomfort.

Sterilising

Equipment should be sterilised until baby is 12 months old. A steam steriliser is the fastest option.

Paced bottle feeding

Paced bottle feeding is a technique that makes bottle feeding closer to breastfeeding. Hold baby semi-upright, hold the bottle horizontal (not tilted high), and allow baby to draw the milk rather than let it flow freely. This helps prevent overfeeding and gives baby control over the pace.

Winding

Formula-fed babies often need more winding than breastfed babies. After every 30ml or so of a feed, take a break and wind baby by holding them upright against your chest or sitting them on your lap, supporting their chest with one hand while patting their back gently with the other.

Trust your instincts. Formula-fed babies thrive beautifully and the most important thing is that you and your baby find a feeding rhythm that works.