My cat has a watery eye and a runny nose, he doesn't sneeze often, but the vet told me it is herpes. I had been giving him 1,000mg if lysine a day because my vet recommended it. After a month it gave him diarrhea. I cut him off for a few days and gave him a much smaller dose and he still got diarrhea the day I gave it to him again. I haven't given it to him in a while and feel awful because his eye is getting worse. Is there anything else I can do to help him? I wipe his nose and eye with clean warm cloths often to help with irritation but I know that doesn't solve it. I need help his herpes just isn't getting any better. He's been broke out for months.