About Us

Supplements from Science

At Horast, our methodology is simple: We only create products that are backed by published scientific evidence. To ensure that we stay true to this unwavering commitment, we prioritize research that demonstrates our products will address a specific need.

As science evolves, so do we, continuing to develop new products and improve current ones.​

Exceptional Ingredients, Without Exception

We never compromise on quality. We source only the finest ingredients to maximize performance and bioavailability and we prioritize the specific nutrient forms used in published clinical research.​

Certified Pure

Not all supplements are created equal. Our products are certified for content accuracy and purity by NSF® International – one of the most rigorous third-party dietary supplement testing programs in the world. It’s your guarantee that they contain everything they should, and nothing they shouldn’t. 

And it’s never one and done. Our supplements are continually tested so you can trust every single product, every single time. 

Referred & Preferred for Decades

Thousands of physicians and other healthcare providers around the country have recommended us to their patients since 2002.

Over a million referrals and counting.

Our supplements are the top choice for providers and patients who rely on superior quality. ​

Clinical Trials

Another reason to feel good about choosing Theralogix: Top universities do, too. Research institutions, including the National Institutes of Health, Harvard University, and Cornell-Weill Medical College, have chosen to use Theralogix products in ongoing clinical trials. They trust our supplements for their high-quality and content-accurate formulations.

We’re honored that our work helps further the field of nutritional science.​

Long-Term Health

Long-term health requires a long-term commitment. That’s why we support you with a convenient auto-refill program that ensures you have an uninterrupted supply of the nutrients you need. At Horast, we’re with you every step of the way. ​

A Physician on a Mission

At the heart of the Horast brand is physician and Chief Science Officer, Dr. Mark Ratner. In 2002, he founded the company to create nutritional supplements that healthcare providers could believe in – and patients could benefit from.

Guided by physicians and scientists at the nation’s leading hospitals and academic medical centers, the Theralogix product family launched with a single men’s health supplement.

Our product line has now grown to 30+ supplements spanning multiple specialties – fertility, rheumatology, urology, women’s health, and more.​

Medical Advisory Board

No supplement brand goes further than Theralogix to ensure scientifically-sound products. For proof, look no further than our Medical Advisory Board (MAB).

Made up of a carefully selected group of physicians, top research scientists, and faculty members at leading U.S. medical schools, our MAB evaluates and approves new product formulations, while offering guidance to improve existing ones. ​

  • Kristin A. Bendikson. MD

    Assistant Professor of Obstetrics and Gynecology
    Assistant Fellowship Director, Division of
    Reproductive Endocrinology and Infertility Keck School of Medicine of the University of Southern California USC Fertility, Los Angeles, CA

  • Robert J. Stillman. MD, FACOG

    Clinical Professor, Department of Obstetrics and Gynecology Georgetown University School of Medicine Medical Director
    Shady Grove Fertility Reproductive Science Center Rockville, MD

  • Serena H Chen, MD

    Division Director Reproductive Medicine CBMC
    Chief Advocacy Officer IRMS CCRM NJ
    Founder and VP Doctors For Fertility nfp
    Clinical Associate Professor Rutgers NJ and Rutgers RWJ Medical Schools
    Livingston and Jersey City, NJ

  • Marc Goldstein, MD, DSc (hon), FACS

    Matthew P. Hardy Distinguished Professor of Reproductive Medicine and Urology
    Surgeon-in-Chief, Male Reproductive Medicine and Surgery
    Cornell Institute for Reproductive Medicine
    Weill Cornell Medical College of Cornell University
    New York-Presbyterian Hospital/Weill Cornell Medical Center
    New York, NY

  • Wayne J.G. Hellstrom, MD, FACS

    Professor; Chief, Section of Andrology
    Department of Urology
    Tulane University School of Medicine
    New Orleans, LA

  • Judd Moul, MD, FACS

    James H. Semans, MD Professor of Surgery
    Director, Duke Prostate Center
    Division of Urologic Surgery
    Duke University Medical Center
    Durham, NC

  • Peter Schlegel, MD, FACS

    NY Men's Health Medical
    Former Chair of Urology at Weill Cornell Medical College
    Former Urologist-in-Chief at NewYork-Presbyterian Hospital/Weill Cornell

  • David Schulsinger, MD, FACS

    Associate Professor of Urology
    Director of Endourology, Laparoscopy and Stone Disease
    SUNY - Stony Brook University Hospital
    Stony Brook, NY

  • Carl L. Keen, PhD

    Chair, Department of Nutrition Professor of Nutrition and Internal Medicine
    University of California at Davis
    Davis, CA

  • Steven R. Patierno, PhD

    Deputy Director, Duke Cancer Institute
    Director, Population Sciences and Health Services, DCI
    Professor of Medicine
    Professor of Community and Family Medicine
    Duke University Medical Center
    Durham, NC

  • Chad Deal, MD

    Head, Center for Osteoporosis and Metabolic Bone Disease
    Vice Chair Quality and Outcomes
    Department of Rheumatology
    Cleveland Clinic
    Cleveland, OH

  • Marc C. Hochberg, MD, MPH

    Professor of Medicine
    Head, Division of Rheumatology & Clinical Immunology
    University of Maryland School of Medicine
    Baltimore, MD

  • Philip J. Mease, MD

    Seattle Rheumatology Associates
    Chief, Rheumatology Research Swedish Hospital Medical Center
    Clinical Professor of Medicine
    University of Washington
    Seattle, Washington