I accidentally gave an August 2021 expired novamax to my child will it cause any effect?

A. hi it depends on your child guts and dosage of the medicine. so if a child looks happy and active,eat and sleep well after taking it then no need to worry about it . although , observe your child for next 48 hours,if you notice any symptoms like fever, irritability, breathing difficulty , dazzineess, low appetite, vomiting, diaherra etc then please consult your nearest pediatrician immediately.