Who Are We?


ProByn International Inc. markets natural, non-drug products for use in animal feeds specializing in mycotoxin binders, pre/probiotics, nutritional supplements, and flavors.  ProByn products are designed to enhance the efficiency of animal production while reducing the use of pharmaceuticals and antibiotics.

ProByn ingredients and formulas are based on the findings of leading research institutions and they are additionally validated by the company's own research.

Since the company's foundation in 1998, ProByn International Inc. has grown in the global marketplace as a highly reputable, deeply respected company who continues to provide exceedingly high-quality products for today's growing agricultural industry.



          The founder and President of ProByn International is Dr. William L. Tuttle. Dr. Tuttle earned his PhD in Animal Nutrition at Iowa State University; since then he has spent over 25 years developing and marketing natural, non-drug additives for the animal feed industry. His education, background and experience have provided him with practical knowledge about new and evolving technologies that can be applied to the increasingly important field of natural, non-drug animal production.
          Dr. Tuttle's son, David Tuttle, is the Director of Marketing for ProByn International and also manages the daily operations. David studied business and marketing at The University of Iowa where he earned his self-made degree in Entrepreneurial Business. David hopes to one day take over his father's business.