Glucosamine is a type of protein found in chitin.
Chitin is found in yeasts, fungi, animals, and plants.
Glucosamine is also called chitosamine. They are not subject to the same scrutiny and regulations as prescription medicines. Glucosamine is available in tablets and capsules that you can swallow. A glucosamine cream can be put on the skin over problem joints. Follow the directions printed on the product label or given by your doctor.