hi there, I have an 8 week old kitten, who has just had his first injection, and then the vet said he is to have his next one in about three weeks time.
the injection completely zonked him out and he slept the whole evening and i was quite worried about him wondering if the vet had overdone the dose but by the next day he was back and charging about all over the place.
I'm so glad you said that afcjan - my 16 week old kitten had his first jabs yesterday and has been pretty much sleeping constantly and has a permanant dazed look on his face when he's awake! I'm hoping by the time I get home from work he'll be back to his usual self!