I have a 9 1/2 year old Chihuahua who has seasonal reocurring upper respiratory signs - much like a mild kennel cough which happens in the spring and fall. His owner owns a boarding kennel and the dog lives on-site. The dog had been vaccinated for kennel cough in the past and gets a treatment of antibiotics which clears it up each time, however the owner wondered if there might be something that she could give to support the dog's immune system for something like this. In your text, I read about Yu Ping Feng San to strengthen Wei Qi. Would this or something else be of benefit?
Thanks,
Rose Mary