Hi, new here but have been lurking for a bit. Wasn't sure if I should start a new thread or ask here. My cat has been on L-Lysine for about 2months now and I was going to add Lactoferrin as the stubborn herpes eye infection just won't go away completely. I got Jarrow's Lactoferrin but my cat vomitted right after. Anyone else have any experience with their cats vomiting on lactoferrin?