Glucosamine is a natural substance found in mucopolysaccharides, mucoproteins, and chitin.1
Glucosamine has attained great popularity as a nutritional supplement, primarily for osteoarthritis. There have been large industry-sponsored clinical trials as well as independent studies. Glucosamine is popular with patients, in part due to the encouragement of the medical profession who, when it was first marketed, advocated it as a low-risk alternative to non-steroidal anti-inflammatory drugs.2
This is a companion discussion topic for the original article at https://patient.info/doctor/drug-therapy/glucosamine