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Dr. Devin Ryerson | Founder and CEO
The concept of Pure Prescriptions began from the idea that cancer patients and survivors needed an outlet for reliable information, specifically nutritional and alternative treatment options. Pure Prescriptions, Inc. was the natural extension from Dr. Ryerson's non-profit Cancer Advisory informational website formed in late 1999.

Today, Dr. Ryerson handles a great deal of the daily operations of the company, educational content, product development and art direction. Learn more about Devin

Dr. Chad Larson | Director of Nutrition
Dr. Larson holds a Doctor of Naturopathic Medicine degree from Southwest College of Naturopathic Medicine and a Doctor of Chiropractic degree from Southern California University of Health Sciences, graduating with honors. He is a Certified Clinical Nutritionist and a Certified Strength and Conditioning Specialist.

His practice integrates naturopathic medicine with cutting-edge laboratory testing and diagnostic imaging. This integrative approach to medicine includes diet and nutritional counseling, prolotherapy, regenerative injection therapy (RIT), chiropractic manipulative therapy, bio-identical hormone balancing, intravenous (IV) nutritional therapy, and natural alternatives to prescription drugs.

He particularly pursues advanced developments in the fields of endocrinology, orthopedics, sports medicine, and environmentally-induced chronic disease.

He has been featured on local and national radio and television programs discussing a broad range of health issues. Dr. Larson has been invited to lecture to a variety of groups from the U.S. Army Special Forces to executive leadership groups to universities and healthcare practitioners. He has published articles in various consumer and professional periodicals and has worked with the Research & Development departments of nutritional supplement companies. Dr. Larson also stays on the cutting edge of laboratory science as an advisor and consultant to Cyrex Laboratories.

Dr. Larson is Board Certified in both Naturopathic Medicine and Chiropractic.
Nancy Ryerson | Customer Car & Sales
Nancy has been in the healthcare field for over 35 years. She started this career at the Long Beach VA Medical Center where she worked directly with patients, families and staff. Subsequent to that, she worked for 20 years as Office Manager in the home healthcare. She worked with nurses, therapists, and social workers coordinating home care for patients returning from the hospital.

During that time, her son and husband both developed different types of cancer. At that time, there wasn’t a whole lot of information available regarding alternative medicine. When they were in treatment, their immune systems were greatly compromised. Her son made it through with a remission, but her husband of 31 years died from sepsis (infection). She felt that if his immune system had been stronger, he could have better fought the ravages of chemo/radiation therapy.

As a result, Nancy’s mission is to provide and share information that may be helpful to others. She enjoys working at Pure Prescriptions, especially talking with customers and hearing how the products have helped them to feel better.

Betsy Ryerson | Administrative Executive
As our resident "tree hugger" and dog lover, Betsy grew up in Northern California and brings a fresh, humble and practical approach to the organization. Betsy is a strong proponent of a healthy, organic and sustainable lifestyle. As a matter of fact, along with Patagonia's Yvon Chouinard, Al Gore and many others, it is Betsy's influence that initiated Pure Prescriptions' Global ReLeaf involvement and the use of sustainable, vegetable based materials for packaging.
Ananda Mahinkanda | Vice President, Finance and Operations
Ananda comes with a wealth of experience from around the world in the fields of Finance and Operations. He has worked in many diverse backgrounds, namely the Middle East, South Asia, East Africa, and North America, and has travelled to more than forty countries in the world.

He joined Pure Prescriptions Group in 2007 and since then has been instrumental in seeing the steady growth that we experience today.

He is a nature lover, vegetarian and a strong advocate for compassionate living.
Tracy Barrilleaux | Wholesale Representative
Tracy comes to us with extensive knowledge from the holistic health field. She graduated in 2004 from Natural Success School of Holistics, with her Holistic Health Practitioner certificate. Tracy also holds a certificate in Nutrition and Bachelors in Holistic Nutrition from Clayton College School of Natural Health.

Previously, Tracy was co-owner of an environmentally friendly massage center for several years, located in Encinitas, California. Her holistic massage center focused not only on holistic massage, but also client education on the importance of recycling and reducing waste, choosing healthy products, and proper nutrition. A native of Michigan, Tracy moved to Southern California over 20 years ago.

Hired in 2009, Tracy overseas all wholesale professional account needs as well as our Purerxo.com program.

Dr. Chad Larson | Director of Nutrition
Dr. Devin Ryerson
Founder and CEO

"Healthy customers is my main goal!"

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Dr. Chad Larson
Director of Nutrition

"Healthy customers is my main goal!"

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Nancy Ryerson
Customer Care & Sales

"Healthy customers is my main goal!"

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Betsy Ryerson
Administrative Executive

"Healthy customers is my main goal!"

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Ananda Mahinkanda
V.P. Finance and Operations

"Healthy customers is my main goal!"

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Tracy Barrilleaux
Wholesale Representative

"Healthy customers is my main goal!"

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*These statements have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure or prevent any disease.
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