My dad takes both of these daily, usually within 4 to 6 hours of each other and has been doing so for several weeks. This morning, when he got out of bed, he couldn't lift one of his arms and could hardly talk. The effects went away after a little while. I'm thinking it happened from his mixing the 2 medications, but I don't know for sure. Does anyone know what could have caused it? It freaked dad and mom out, especially mom.