A couple members here at TCS recommended using this, after I asked if there was anything else that could help aid my FIP cats' immune system besides L-Lysine. I looked it up on Amazon, and found that there were quite a few different kinds of the stuff. Is this the one I should get?
http://www.amazon.com/Transfer-Facto...g_hu-rd_dp_img
http://www.amazon.com/Transfer-Facto...g_hu-rd_dp_img