J.L.
Good morning N., I would not give any child a sleep aid they have to take eternally. After reading some of the responses, i feel the real issue isn't him waking up, it's staying in bed, that's what needs to be disciplined, if he is getting up for any reason aside of using the bathroom, you have to address the getting up. Romatheropy Lavender oil in a defusser, will help him sleep through the night, if the waking up is an issue with you, for me as a mom the bigger issue would be him getting up. J.