Piriton - allergic reaction ?

[ahlam1399]

Has anyone found their horse to have a reaction to piriton? I introduced shakeeaze and 5 piriton to my horses feed and that evening he came in incredibly itchy like he was having a reaction to something. Really distressed with it , rearing up and itching himself raw. He would only stand still if I was scratching him firmly :/Still itchy today but not as bad.Have stopped feeding them today.

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