Good

So I had to used this product because my car got URTI, we tried all the possible antibiotics available and nothing worked, so we decided to use Lysine to boost his immune system, it took a couple months but he recovered.
Good product.

Great for shelter cats

I work in a shelter where we have upper respiratory infections often and this product is great. I find it helps the cats get over URI faster and is something we can send adopters home with to help prevent URI getting worse.

L-lysine is a food complement used to warn handle the chronic conjunctivitis of the cat. My youngest cat always cried for its left eye, the veterinarian recommended me this product, and since then, whimpering decreased in 95 %