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Yes, I've only taken Piriton once and never again! It completely knocked me out. So I only have the non-drowsy ones in the house - looks like I ought to go out and buy some Piriton then, just in case. :thumbsup:Lal said:I think Piriton (Chlorphenamine) belongs to a particular, older group of antihistamines. The newer human varieties which have been introduced work slightly differently I think, to prevent the drowsiness that was always a problem for hay fever sufferers on the older antihistamines.
I'm no pharmacist/vet or anything though so I might be wrong.