A clinical study of Novalac showed that the symptoms of most feeding problems begin to improve after 1 week, but may take longer for some babies/conditions.1
With the exception of Novalac Allergy, if your baby's symptoms have not improved within a month, or if your baby's symptoms get worse, you should seek the advice of your healthcare professional 1.
If your baby has a confirmed cow’s milk protein allergy and is using Novalac Allergy, you should notice symptoms improve quite quickly. Symptoms like excessive crying and rash should improve within a month, but if your baby is underweight, it may take some time for them to catch up.2 If you’re concerned about your baby’s symptoms, or if they do not seem to be improving, see your healthcare professional for advice.
1. Pina et al. World J Gastroenterol. 2008; 14(2):248–54 (Eden Study).
2. Vandenplas Y et al. Arch Dis Child. 2014; 99:933–6.