Boy cat very sleepy after jabs yesterday

[BluebellTheDonkey]

Took the cats for their booster jab/worming/health check yesterday. Girl cat seems fine, has eaten a bit of breakfast and is up and about. Boy cat had some biscuits last night but hasn't touched his breakfast and is just fast asleep on his favourite chair. He is usually straight out of the door into the garden when we get up at 6am. Do you think its OK to just keep an eye on him today? Is this normal behaviour? I'm trying to remember how he was last time, I don't think he slept this much!
Thanks

Mines had that reaction once, he was OK a couple of days later.

Of my 2 cats one was always totally fine and the other always reacted very badly and was sleepy and pathetic for a couple of days.

If not eating try some very smelly food like sardines

Thank you for the reassurance. He's a bit of a gentle sensitive soul whereas girl cat is far more robust. He's just woken up and looking more alert so I will see how he goes. Thanks again.

I had a gorgeous boy, (I know his gorgeousness is totally irrelevant), who was always withdrawn and sleepy after jabs. Your lovely boy is probably just the same.

@Want2beme how could cat gorgeousness ever be irrelevant! He's back to his usual self now so panic over. Think he just needed a little time to recover bless him.