NSL Herbs is a dietary supplement and a product intended for ingestion that contains a "dietary ingredient" intended to add further nutritional value to the body.Nutritional supplements are used for many purposes. They can be added to the diet to boost overall health and energy; to provide immune system support and reduce the risks of illness and age-related conditions; to improve performance in athletic and mental activities; and to support the healing process during illness and disease. However, most of these products are treated as food and not regulated as drugs..These are also added to the diet for both nutritional and medicinal purposes. Herbs have been used for centuries in many traditional medicine systems, and as sources of phytochemicals, or substances found in plants that have notable effects in the body.

Naturopathy and homeopathy, two other systems of natural healing, also rely on herbal preparations as their main sources of medication. The medicinal effects of herbs are getting scientific validation; about one-fourth of all pharmaceuticals have been derived directly from plant sources, including aspirin (found in willow bark), codeine (from poppy seeds), paclitaxel (Taxol), a patented drug for ovarian and breast cancer (from the Pacific Yew tree), and many others.Herbs can supplement the diet to aid in overall health or to stimulate healing for specific conditions. For instance, Rauwolfia Serpentina contains a number of bioactive chemicals to help control highblood pressure, an anti-tumor and helps digestive problem, while Lagundi is a popular herb used to stimulate the body's resistance to colds and infections. But again, Dietary supplements should not be used to treat any disease or as preventive healthcare. An exception to this recommendation is the appropriate use of vitamins. Dietary supplements are unnecessary if one eats a balanced diet.