Don’t reheat several times artificial or breast milk before feeding it to the baby.

Type of practice

Other health practices

Topic Area


It is common practice to reheat several times both breast and formula milk, using methods that do not guarantee the correct temperature such as pots, bottle warmers, microwave ovens. The preparation of milk before administration can be via baby bottles warmers with a set default temperature. Liquid formula can be warmed in hot water up to 35 °C (95 °F), while the milk powder must be added to water at a temperature of 70 °C (158 °F). Breast milk should be administered at room temperature.At an inadequate temperature many beneficial properties of milk, breast milk especially, vanish. Once heated, milk not consumed within half an hour must be discarded to prevent bacteria proliferation. In the absence of single doses, avoid the entire bottle of milk to cool and then be reheat. Health care providers and parents should be aware of these problems, especially when referring to sick and premature babies.


1. Infant nutrition and feeding; Reference Handbook for Nutrition and Health Counselors in the WIC and CSF Programs 2009.
2. Cappozzo. Koutchma, Barnes: J Dairy Sci.Chemical characterization of milk after treatment with thermal (HTST and UHT) and non thermal (turbulent flow ultraviolet) processing technologies; 2015 May 28.98(8): 5068-79.
3. Bennett R: Preparing and warming formula, 2003. Avalilable from:
4. Badon P, Zampieron A: Procedure infermieristiche in pediatria, 2014.

Attention. Please note that these items are provided only for information and are not intended as a substitute for consultation with a clinician. Patients with any specific questions about the items on this list or their individual situation should consult their clinician.