My arthritis condition was treated using shark cartilage, although effective, at 70 grams a day it was debilitating my pocketbook. Add to that, I started to smell of an odor. One of the negative feedback of using shark cartilage is it prevents the growth of new capillary beds. An analogy is that shark cartilage can be like AZT. AZT prevents reverse transcription, that means for a virus to enter the cell but it also prevents healthy cell replication. As luck would have it my clinician turned to the bovine trachea. It doesen’t make me smell , it doesn’t prevent healthy cell division. I’ve talked to others that have used this product. They also have osteoarthritis, hip dysplasia, rheumatoid arthritis and use the product to get better. Cytozyme-Trachea is one of the most effective products on the market for cartilage and joint issues.