Genuine CortiSlim Products Introduced in 2003, CortiSlim quickly became one of the leading dietary supplements in the U.S., with millions of customers benefiting from the CortiSlim family of innovative nutritional products and formulations. Guided by a new ownership team since 2008, CortiSlim International, LLC is committed to providing customers and retail partners with the highest quality supplements available�manufactured, promoted and sold with the highest possible integrity. Today, CortiSlim is a trusted partner and resource for individuals seeking support for their weight loss, stress management and fitness goals.