My father takes quite a few medications, one of them being a prescription sleeping pill. This is considered a controlled substance and on more than one occasion, he has run out before the 30 day supply is up. I don't know how this continues to happen. he is only supposed to take one at night. I need to talk with him about this but he can be very defensive. My concern is that he might not be taking it right. I have always acquiesced to what my father wants and now, as an adult I find it difficult to confidently speak with him about anything. My parents live with us and I am their Primary caregiver. Any suggestions would be helpful.