You're not getting the meds into your snake's throat for swallowing, filling his mouth, and its getting into his glottis. That's why its coming out his nose. He's working his mouth that way to try to get the stuff out of his mouth. Basically, he's exhibiting the symptoms of RI, but the symptoms are created by the meds. You need to be very careful to get the meds into his throat, and out of his glottis! You want the meds to get to his stomach, not his lungs!

Steve