It's starting to look like JD's URI is going to be chronic. He's had gooby eyes, sneezing fits and a runny nose since he arrived. As a last resort, and after being told by the vet that, at best, it would help and, at worst, it would do no harm, we decided to try L-lysine.
We got some L-lysine from a pet supply store. It's chewable and formulated especially for cats. 250 mg per chew. It says one per day for kittens, 2 per day for cats. Since we don't know exactly how old JD is, we started with 1 chew.
He ate it, but then threw up his breakfast. The next day, I tried another, which he just gummed and spit out. So I gave him a day off, then sliced up a half chew for his morning meal the next day. He kept that down, so we graduated to 1/2 chew in the morning and 1/2 at night. He's had about 3 days of lysine in a row without nausea now.
However, his sneezing is worse, he's begun coughing again (he had been coughing early on but after a few weeks it had been much reduced), and his eye goobies are pretty bad. Does this mean that his immune system is ramping up and fighting whatever is ailing him or does this mean that the L-lysine is actually making him worse?
Is it safe to continue the L-lysine for a while longer?