IMAGE: This photo shows the fossilized jaw of the oldest chinchillid rodent, Eoviscaccia frassinettii, which is related to the modern chinchilla. view more. Credit: AMNH/M.
There are three main types of dietary supplements, including herbal supplements, vitamin and mineral supplements and probiotic supplements.In addition, there are some dietary supplements that are harmful and should be avoided at all times.lthough different than the vitamin and mineral supplements, Herbal supplements are the base of many medicinal practices. Herbal supplements have been used for thousands of years, and with advances in technology, many herbal remedies are now available as a supplement.
Dietary supplements are widely available in the United States in health food stores, grocery stores, pharmacies, on the Internet, and by mail. People commonly take them for health-related reasons. Common dietary supplements include vitamins and minerals (such as vitamin C or a multivitamin), botanicals (herbs and plant products, such as St. John's wort), and substances that come from a natural source (such as omega-3 fatty acids).