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View allMark Allen, 6X Ironman World Champion
Voted Best Endurance Athlete of All Time by ESPN, Mark knows a thing or two about training. If you're among those who are hungry to discover how to reach peak performance AND feel rested (Mark trains every day at age 64, but who's counting), check out Mark Allen's insider tips on recovery and his favorite Tennant Products recommendations.
The purest, highest quality on the planet.
Every one of our products are made with the very best ingredients available. Learn why Tennant Products sets an exceptionally high standard and how we source our ingredients around the world to bring them to your home.
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Read Dr. Tennant's extraordinary story: Over 60 years of helping patients.
Dr. Tennant has provided patients around the world with superior care for over 60 years. Tennant Products is proud to be a family-owned and run business. Meet the family and see why we're as passionate as ever about sharing our products with you and our entire community.

DOCTOR RECOMMENDED
Gut Bootcamp wants... YOU.
Ready to address that upset stomach, constipation, diarrhea, gas or bloating? Dealing with Celiac Disease, SIBO, or leaky gut? Dr. Tennant's Microbiome Support is the place to start.
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Join our community of qualified healthcare professionals and offer Tennant Products to your clients and patients. Receive reseller resources, training & inspired education, and qualify for professional discounts.