When Minna first came to our home, I noticed her left eye was squinting occasionally, her foster mom told me that was nasal allergy, and her vet told me she probably had a cold during her first check-up. Her condition improved a lot during the first month since I fed her premium cat food without corn or wheat and switched to fragance-free laundry detergent. (I now feed her grain-free dry & wet cat food.)
When she had a mild cold this month, I did further reseach with feline herpes virus and decided to give her feline L-lysine as a food supplment to help control the virus. I will try a couple different brands and write a review about them.