FDA stands for Food and Drug Administration.
FDA's responsibility is to ensure the safety of food, cosmetics, drugs, biological agents, devices and radiological products produced in or imported into the United States, and FDA-approved food, cosmetics and medical devices are guaranteed to be safe and effective for humans. In the United States and nearly 100 other countries, only FDA-approved materials, devices and technologies can be commercialized for clinical use.
According to the regulations, food, drugs (including veterinary drugs), medical devices, food additives, cosmetics, animal food and drugs, wine beverages with less than 7% alcohol content, and electronic products, such as lasers, must be tested by the FDA to prove their safety before they can be sold in the market.
Even on the shelves of Amazon and other U.S. cross-border e-commerce platforms, the need for corporate products to do FDA registration.