YES. My cat will be on lactoferrin indefinitely. Lactoferrin is definitely the key here. Using only lactoferrin, sprinkling the contents of the capsule into the food and mixing well, seems to work great for my kitty with the post-herpes runny eye. When I run out of lactoferrin like I have now, the eye does start to run again, not as badly as it used to, but it is still running some clear liquid. I will be ordering the lactoferrin again! Since it is not a medicine but more of a food, being derived from bovine colostrum, it will not interact with any medications like antibiotics or antivirals a cat might be taking. Google it and you can read some of the research on it.
"Research has found out that lactoferrin possesses a potent anti-viral activity and may be useful in preventing certain types of viral infections in humans” (Hasegawa) Therefore bovine colostrums lactoferrin and its other beneficial components may help people suffering with herpes."
Hasegawa, K, et al. Inhibition with lactoferrin of in vitro infection with human herpes virus. Japanese Journal of Medical Science and Biology 47:73-85 (1994). Both human and bovine lactoferrin inhibit infection with human herpes simplex virus and human cytomegalovirus in cell cultures.