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.
Vitamin E may also reduce the risk of cataracts and other age related macular degeneration that can cause blindness. For seniors, Vitamin E liquid supplements can also serve as preventive measure.