Non-medicinal ingredients are substances that originate from plant or mineral sources. These substances may be added to a health product to improve its appearance, taste, stability, or ability to absorb other ingredients. For example, vitamin E (tocopherol) and certain carotenoid pigments may be used as non-medicinal ingredients. The NNHPD monograph will provide specific information regarding which non-medicinal ingredients are acceptable for use in a given formulation.