Amylin presents improved indices of beta-cell function after three years of BYETTA therapy Amylin Pharmaceuticals, Inc. Three years of BYETTA therapy improved indices of beta-cell function assessed four weeks after discontinuing therapy. These results were provided at the 70th Annual Scientific Classes of the American Diabetes Association in Orlando, Fla generic viagra side effects . After three years of treatment, both therapies decreased A1C likewise . A1C is a way of measuring average blood glucose over three months. In addition, BYETTA significantly reduced body weight in comparison to Lantus .