A son dying after the mother gave him the wrong medicine
If the child died because of the reason you mentioned, that you gave him an incorrect dose of medicine, you have to
make Kaffarah. That is done by setting free a Muslim slave. If you are unable to do so, you have to fast two successive months as a Kaffarah of involuntary manslaughter.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.