Piriton for Dogs

[NemoIsLost]

Has anyone used piriton for their dog? ours has an itchy belly and have been advised to give him a piriton once a day. I'm just abit scared to give him a human medicine.

Week 4 of antibiotics now finished. He has started scratching his belly again. we are due back to the vet tomorrow, I really can't see the point of more antibiotics, there is no difference after week 4 than week 2.
I've heard good things about Apoquel and stinky stuff.....I'm at a loss what to do really. Already spent £150+ at the vet