In marketing, product bundling is offering several products or services for sale as one combined product or service package. It is a common feature in many imperfectly competitive product and service markets. Industries engaged in the practice include telecommunications services, financial services, health care, information and consumer electronics. A software bundle might include a word processor, spreadsheet, and presentation program into a single office suite. The cable television industry of
1 The research on diabetes and vitamin D and calcium supplements is not conclusive. 2  Supplementing with vitamin D combined with calcium appears to lower the risk of developing type 2 diabetes, according to a 2007 systematic review and meta-analysis.
B-complex vitamins all work together to support cellular metabolism. B vitamins help the body metabolize carbohydrates, proteins and fats into glucose, which the body uses for energy. Glucose is the main source of energy for the brain and the body. Lack of B vitamins leads to weakness and fatigue.