Pet Wellbeing Respir-Gold is a veterinarian-formulated herbal supplement designed to support healthy respiratory function in dogs. This thoughtful blend features Black Cumin and Horehound, herbs traditionally used to help maintain normal airway function and comfortable breathing. Respir-Gold supports the lungs and respiratory tract by helping promote the flow of air and helping maintain the normal balance of secretions in the airways. It also supports a healthy immune response, including histamine regulation, to help promote normal, open airways and overall respiratory wellness.