Maple Leaf Medications has provided information from third parties intended to increase awareness and does not contain all the information about Murine Tears (Polyvinyl alcohol/povidone/tetrahydrozoline - non Rx). Talk to your doctor or a qualified medical practitioner for medical attention, advice, or if you have any concerns about Murine Tears (Polyvinyl alcohol/povidone/tetrahydrozoline - non Rx).