Nanotechnology can be used in a broad array of FDA-regulated products, such as human drug products, including those that are biological products.³ Nanotechnology may be used to create drug products in which nanomaterials (as explained in section II of this document), serve a variety of functions, for example as a active ingredients, carriers loaded with an active ingredient, or inactive ingredients. The inclusion of such materials may result in product attributes that differ from those of  products that do not contain such materials, and thus may merit particular examination. This document provides guidance on the development of human drug products, including those that are biological products, in which a nanomaterial is present in the finished dosage form.