Vet’s + Best Seasonal Allergy Soft Chews for dogs helps to promote your dog’s wellness by soothing skin-related concerns associated with seasonal allergies in a once-a-day soft chew supplement. Seasonal Allergy soft chews support normal histamine levels, helping skin related issues associated with seasonal allergies. Each daily soft chew is loaded with Nettle Leaf, Quercetin, Perilla Leaf Extract, Biotin, and Vitamin E to support histamine levels, proper skin moisture, and provide a natural source of antioxidants. 30 count.