What are not functions by FDA?

In the context of the FDA, "not functions" typically refer to products or substances that do not meet the regulatory definition of a drug, biologic, or medical device. This can include items like dietary supplements, cosmetics, or food products that are not intended for therapeutic use. Additionally, certain claims made about products may lead to them being classified as not functions if they don't align with FDA definitions. Products that do not undergo the necessary approval processes or fail to demonstrate safety and efficacy may also fall into this category.