Upcoming Webinar:

Re-Framing Bioavailability Through the
Lens of the Microbiome

Thomas G. Guilliams, PhD


Clinical research and therapeutic use of botanically derived ingredients continue to grow worldwide. This includes ingredients that are minimally processed as well as those that are highly concentrated compounds (e.g., curcumin). While many botanical preparations have been used for millennia in various medicinal traditions (numerous of which are recorded in ancient pharmacopeias), some have also been evaluated using the latest drug discovery techniques.

In this webinar, you’ll learn:

  • How the human gut microbiome may be a key mechanism driving bioactivity of certain botanicals
  • The conundrum between absorption, bioavailability and efficacy, as it pertains to the application of botanical compounds
  • Examples of botanical compounds to be wary of that overmarket of “bioavailability” claims




Thomas G. Guilliams, PhD

Dr. Guilliams earned his doctorate from the Medical College of Wisconsin (Milwaukee) where he studied molecular immunology in the Microbiology Department. Since 1996, he has spent his time studying the mechanisms and actions of natural-based therapies, and is an expert in the therapeutic uses of nutritional supplements.

As the Vice President of Scientific Affairs for Ortho Molecular Products, he has developed a wide array of products and programs which allow clinicians to use nutritional supplements and lifestyle interventions as safe, evidence-based and effective tools for a variety of patients. Tom teaches at the University of Wisconsin-School of Pharmacy, where he holds an appointment as a Clinical Instructor; at the University of Minnesota School of Pharmacy and is a faculty member of the Fellowship in Anti-aging Regenerative and Functional Medicine. He lives outside of Stevens Point, Wisconsin with his wife and children.

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