Argh! Jack still isn't eating. Maybe it's just because he got upset about Henry being gone? After we got home from the vet yesterday I put her alone first in the bathroom then my bedroom so I could see whether she was eating and using the litterbox. Today I thought they were missing each other so I let her out...after feeding her with a syringe last night, she did eat some Fancy Feast and I think a little kibble on her own, then I heard her playing with the treat bag and I gave her some and she gobbled down seven of them before I decided that was enough, even if she wasn't eating much else.
So far today as far as I've seen all Jack has eaten is one treat. He isn't interested in kibble or either of the wet foods I've put out, nor will he do more than sniff at treats now. Guess I'll break out the tuna. He isn't showing any other signs of a problem, so hopefully it was just the separation bothering him and he'll start gobbling down like normal soon. I just checked his mouth and can't see any sign of a problem.
ETA: Whew! Never say it doesn't pay to complain. After I posted this i walked over to the room where the kitty food is and both of them followed me and started eating some kibble. Praise the Lord! Except for a couple more doses of meds hopefully all is back to normal.