Ready-to-Use Infant Formula: How to Prepare and Store

Just like the name says, this product is used right out of the container.

Ready-to-use (also called ready-to-feed) formula is sterile and safe for your baby as is.
Ready-to-use formula comes in single use bottles as well as larger containers for multiple feedings.
Always follow the manufacturer’s directions on the label.
It is very important that your hands and the place where you prepare the bottles are clean and that feeding equipment is sterilized.
Never add extra water to make the formula thinner as this is dangerous for your baby.
Never mix any other kind of food, drink or type of formula in your baby’s bottle. Adding cereal to your baby’s bottle won’t help him sleep and can cause choking.
Bottles prepared ahead of time need to be covered and stored in the refrigerator. Throw them out if you haven’t used them within 48 hours.

Your baby should start a new bottle at each feeding.
After feeding begins, use the formula within one hour or discard.
After each feeding, throw away any unused formula. Never reuse, reheat or put it in the fridge for later use.
If using formula that comes in container with more than one serving in it
- once opened, cover the container and store it in the refrigerator
- use the entire bottle of formula within 48 hours.
- throw out any unused formula that has been open for over 48 hours.

Cover the opened container and store it in the refrigerator. Use the entire bottle of formula within 48 hours. Throw out any unused formula that has been open for over 48 hours.
Your baby should start a new bottle at each feeding.
After feeding begins, use the formula within one hour or discard.
After each feeding, throw away any unused formula. Never reuse, reheat or put it in the fridge for later use.

Updated and reproduced with permission from the Government of Manitoba

Most babies like to drink their formula at room temperature.
You can warm the bottle by placing it in a bowl of warm water.
Never warm bottles in a microwave oven as it causes hot spots and can burn your baby’s mouth.
Check the temperature of the formula by placing some drops on the inside of your wrist.