Bovine cartilage products-  aka Antitumor Angiogenesis Factor (anti-TAF), Bovine Tracheal Cartilage (BTC), Cartilage Trachéal de Bovins, Cartílago Bovino, Catrix, Catrix-S, Collagen Bovine, Collagène Bovin, Glycosaminoglycan Polysulphuric Acid Complex, Processed Bovine Cartilage, Psoriacin, Psoriacin-T, Rumalon. 

These are cow derived cartilage used to treat a variety of diseases.  The theory behind their use is that they contain chondroitin and glucosamine- two building blocks of cartilage.  Some of these products (supplements) are very expensive, especially in combination with other components.  There are no significant quality studies linking bovine cartilage to significant improvements in disease.  It is possibly effective in treating poison oak and ivy, treating acne, skin psoriasis, hemorrhoids and anal itching, rheumatoid arthritis, dry socket after tooth extraction.   It may be effective in some cases of osteoarthritis.  But overall, it is very questionable.  Aetna considers it experimental.

http://www.medicinenet.com/bovine_cartilage/supplements-vitamins.htm