Joint bundling is a subcategory of pure bundling in which the two products are offered together for one bundled price; Leader bundling is a subcategory of pure bundling in which a leader product is offered for discount if purchased with a non-leader product, accessory or other item.
Vitamin B Helps Your Metabolism. You should balance your vitamin supplements to match your needs. A multi-vitamin is great, but if you are extremely fatigued all the time and don't get enough vitamin B in your diet, then adding vitamin B-12 will improve your flagging energy. B-complex vitamins provide you with: 1  Boosted metabolism. 2  Healthy skin.
B vitamin supplement tablets. B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. Though these vitamins share similar names, research shows that they are chemically distinct vitamins that often coexist in the same foods. vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. Though these vitamins share similar names, research shows that they are chemically distinct vitamins that often coexist in the same foods.