Welcome to HPDI!

The HPDI Design and Sales Teams

Product Design & Innovation Team

Hank Liers, PhD

Hank Liers, PhD
Dr. Hank Liers is the founder of Health Products Distributors. He has been designing supplements for nearly thirty years.

On Twitter: @HankLiers
A Letter from Hank Liers


Fred Liers, PhD
HPDI researcher, copy editor & blog writer, social media person, content manager, marketer, and former university instructor.

On Twitter: @Fliers

HPDI team member for eleven years.

IT Support, Web & Marketing

Bob Simmons, Webmaster

Bob Simmons
Active caver and outdoor enthusiast.


HPDI code shepherd and content curator for twelve years.

Sales Team

Our sales team knows our products well because each of us uses our products on a daily basis! If you call our toll-free number (800-228-4265) during our normal business hours, you’ll get one of us, and well be pleased to help answer your purchasing or product questions.


Local theater member, pet lover, and grandmother.

HPDI team member for nine years


Outdoor enthusiast, photographer, and health aficionado.

HPDI team member for nine years

Linda Leigh

Among other things, Linda is known around southern Arizona as an authority on worms!

HPDI team member for three years