<unk> (topical) is a musculoskeletal agent that is FDA approved for the treatment of osteoarthritis of knee, hair growth and loss prevention.   Common adverse reactions include injection site pain, injection site reaction , arthralgia.
Hyaluronic acid 
Chondroitin sulfate
Sarcoglycan
Heparan sulfate
Dermatan sulfate
Fibrous protein
Glycoprotein
Glycosaminoglycan