If you want to try an over-the counter antihistamine for your cat or dog, it's best to call and consult your vet for what dosage is safe and effective. (tampabayvets.net)
Treatment for allergies can range from Benadryl or other over the counter antihistamines to more targeted drugs called Janus 1 Kinase Inhibitors. (bensalemveterinaryhospital.com)
Veterinary prescribed drugs like Acepromazine and over the counter antihistamines like Diphenhydramine Hydrochloride (Benadryl Allergy) can sedate your pet, but won't actually relieve anxiety and could worsen the behavioral issue. (patrickmahaney.com)