Glucosamine has confirmed itself time and again although its potential for repairing broken joints and slowing the development of arthritis. Glucosamine seems to be both secure and effective till today as it was before. Normal therapeutic doses of glucosamine given orally have never been proven to have an hostile impact on insulin ranges, insulin resistance or blood sugar levels. Normal therapeutic doses of glucosamine given orally have never been proven to have an hostile impact on insulin ranges, insulin resistance or blood sugar levels.