We're using all natural ingredients, so like most supplements you find on Amazon or the supermarket, they don't need an FDA approval. Our supplements are manufactured in a GMP-certified (Good Manufacturing Practices) facility in Colorado, US, and they go through a stringent quality check before they are sent out.Our customers have been posting reviews of their experiences with our supplements, and they have seen positive results such as improved energy levels, better focus and attention and even some weight loss.