| 8 | Amniotic Fluid | Fluid surrounding the cow embryo in-utero |
| 0 | Aorta Extract | Extract derived from animal aorta |
| 0 | Brain Extract | Extract of bovine and porcine brains |
| 0 | Calf Blood Extract | Extract of calf blood |
| 0 | Calfskin Extract | Extract of bovine skin |
| 0 | Calf Skin Hydolysate | Hydrolysate of calf skin derived by acid, enzyme or other method of hydrolysis |
| 87 | Collagen | Protein in cartilage and other connective tissue in animals |
| 20 | Collagen Amino Acids | The mixture of amino acids resulting from the complete hydrolysis of collagen. It is characterized by containing a significant level of hydroxyproline. |
| 0 | Colostrum | Fluid secreted by the mammary glands after the birth of an animal |
| 0 | Colostrum Cream | The oily, yellowish portion of colostrum (q.v.) |
(No. of products containing ingredient that have been voluntarily registered with FDA)
