I can totally see how those commercials got into his head. They are on ALL the time. There use to be too many commercials promoting meds, now there are too many against them. I can see how he is having a hard time understand this, especially when he felt his meds weren't beneficial for him, why would yours be any different. Overall, I think you are doing really well with the situation you are in. I know it must be really difficult trying to explain these complicated things to a child.