My cat who has a skin allergy to something, fleas or something had had a steroid jab the other day but I don't think it worked so thought I'd try Piriton. I hope I'm not imagining it but I think it is working! I give him 2mg twice a day and I haven't seen him do a frantic scratch or lick since. How quick does it work? He had his first tablet yesterday around 7pm and one this morning. Also, do I need to keep him on it? Or how long should I keep him on it until I try him without? In case it's more a pollen allergy or time of year related, for example. Is it safe to give it to him indefinitely if I have to? Must be safer than steroid jabs surely. Big thank you for the person who initially recommended it to me.