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After experiencing great success with Lactagen®, Ritter Pharmaceuticals is pursuing FDA approval, in order to develop the first prescription treatment for lactose intolerance.

Unfortunately, Lactagen® is no longer for sale. Lactagen® has been successful in helping thousands of lactose intolerant sufferers, and we hope to help millions in the future. Unfortunately, based on the regulatory restrictions in the U.S., Europe and around the world, going through regulatory clinical trials is the most prudent approach to ensure worldwide application and availability of our product. We are working as fast as possible to bring this treatment to the market.

About Ritter Pharmaceuticals, Inc.

Ritter Pharmaceuticals, Inc. develops novel therapeutic products, which modulate the human gut microbiome and has the potential to treat inflammatory, gastrointestinal and metabolic diseases. Our microbiome modulators provide specialized nutrition that selectively increases the growth of beneficial bacteria in the colonic ecosystem and creates significant improvement in the health of individuals that suffer from these diseases.

About RP-G28, A Treatment for Lactose Intolerance

RP-G28 has the potential to become the first FDA-approved drug for the treatment of lactose intolerance, a debilitating disease that affects over 1 billion people worldwide. The product is understood to stimulate the growth of lactose-metabolizing bacteria in the colon, which reduces lactose-derived gas production, and thereby mitigates the symptoms of lactose intolerance in the process. RP-G28,for the treatment of lactose intolerance, is currently in late stage 2 clinical trials. You may read more about RP-G28’s recently published clinical data at

To join our mailing list and keep up to date with our research and progress, please email us at


When will this product be available?

We are sorry that we cannot provide a timetable at this time. You may follow our development and progress by visiting our website at or by going to

Can I participate in a clinical study?

Clinical trials are not in enrollment at this time. You can learn more about participating in clinical trials at for more information.

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