What a strange, strange story. I honestly don't know what to think. Is this medication psychosis a real possibility here? I have indeed heard of it before, but I personally think there would have been a lot of strange behavior before the murders if this were the true cause. He had been on these medications, it appears, over a period of years. Possibly on and off. I find it a little difficult to believe he would have a sudden psychotic reaction to a medication he had been on for some time. So, I have my doubts. Is it possible that believing this is the only way the mother can cope?