I have two cats with what appaears to be feline herpes. They are currently being treated with Terramycin for their eyes. The vet and I have discussed putting them on lysine, however, he does not have a supplier at this time. Is it okay to use liquid human lysine or is it a different product all toghether? Is there anything else you can suggest to help them get over their eye infections, we are going on 3 months of dealing with it (and 2 vets ) Any insite and suggestions you may have would be greatly appreciated! Thanks!