The Supplement Labeling Handbook aims at providing a clear understanding of the regulatory labeling requirements for dietary supplements. This valuable tool identifies the source of the requirements, easily enables deeper studies and offers instructions and tools to navigate the regulatory requirements for the labeling of conventional foods quickly and thoroughly. It provides bullet point arranged instructions for quick application. The many tables created for this handbook enable an excellent overview of a specific labeling subject and at the same time offer details to resolve particular labeling questions. The labeling subjects are grouped to the most likely occurring questions even though they are regulated by different regulations. E.g. the flavor designation is discussed with the statement of identity; incidental additives are discussed in the chapter for the list of ingredients. The handbook covers general labeling requirements; however, it cannot replace the Federal Food, Drug, and Cosmetic Act and its amendments or the regulations in 21 CFR or FDA issued guidance documents. The information in this handbook is accurate to the best of the author’s knowledge reflecting the status as of June 2018.