Is ProLon® FDA approved? 22 February 2022 07:37 As food, ProLon® does not require FDA approval. Related articles How is it possible that I’m eating but still in a fasting state with such a high carbohydrate diet? How can people of different sizes and weight eat the same things with the same amount of calories while on the program? Do you have links to your research/science? Is there scientific data supporting ProLon® ingredients and formulation? Is there a "transition day" diet after completing five days of ProLon®?