Yikes, tracheal wash, definitely do a lot of research before you consent.
Read this thread and do a search for more.
http://www.yorkietalk.com/forums/sho...=tracheal+wash
Natural Immune System Boosters:
Fish: Especially saltwater fish, have a number of nutritional benefits. Ingestion of as little as one ounce of saltwater fish daily is known to boost the immune system, inhibit cancer, combat kidney disease and increase mental alertness.
Kelp: It is usually sold dried and ground to a fine powder, often encased in gel capsules. Kelp is an excellent mineral supplement as it is high in iodine, calcium and potassium as well as other trace minerals. Kelp is also known to boost the immune system, kill bacteria and add iron for the blood.
Yogurt: Besides being a nourishing food on its own, yogurt contains beneficial bacteria that improve bowel function. These bacteria help prevent intestinal infections, prevent diarrhea and kill problem causing bacteria. Yogurt is also known to boost the immune system and is thought to have anticancer properties.
Natural Bee Pollen: While not an herb, natural bee pollen is known to boost the immune system. It is also said to provide some pain relief for dogs as well. This is a by-product of the honey industry.
Echinacea: Is an herb known by experts to stimulate the immune system, so much that physicians are even recommending it to patients during flu season.