Can be considered if there is concurrent upper respiratory manifestation of allergy, but has limited antipruritic effects. Here are some examples of antihistamines and dosages12:
Cetirizine: 5-10 mg/cat (NOT mg/kg) q24h
Diphenhydramine: 2-3 mg/kg q12h
Loratadine: 2.5-5 mg/cat (NOT mg/kg) PO q24h
Hydroxyzine: 5-10 mg/cat (NOT mg/kg) q12h
Chlorpheniramine: 2-4 mg/cat (NOT mg/kg) q12h
Nutraceuticals
Topical skin barrier support
May be good options for mildly affected cats or as adjunct therapy to reduce other medication requirements. Limited information supports the impact of barrier dysfunction in feline allergy compared to canine patients.
