You've described this as a one sided issue, which makes it sound like you see your worldview as correct and are seeking a way to get the child to adjust his vie

You've described this as a one sided issue, which makes it sound like you see your worldview as correct and are seeking a way to get the child to adjust his viewpoint. Some empathy, rather than drugging the child, might help. Try and understand where he is coming from and be honest with yourself about whether there are things that you are doing that could be contributing to a rift.