In our fast-paced world, it's important to remember to take your vitamins. A subsidiary of NBTY, Vitamin World owns and operates 420-plus retail stores nationwide. Focused on making more than 1,000 vitamins, herbs, and other nutritional supplements, the company produces supplements in a wide variety of forms, such as capsules, tablets, powders, and liquids. Vitamin World, founded in 1976, packages more than 100 billion bottles of supplements each year. Its products include supplements for immune support, sports nutrition, and weight management. Customers also can shop for vitamins online; each month, the company ships more than 100,000 products ordered through the VitaminWorld.com site. Investment firm Centre Lane Partners agreed to buy Vitamin World in early 2016.