Tait Switzer, BS
V.P. Research & Development
See Biography

Spanning more than 17 years, Mr. Switzer’s product development career includes technical and management experience in developing a variety of products for the global market, including dietary supplements, foods, prescription and OTC drugs, confections and skin care. After graduating from East Texas State University with a Bachelor’s Degree in biology, he began his career in product development with a pharmaceutical company. He subsequently held various positions of increasing responsibility in the pharmaceutical industry, culminating as the Head of Product Development and Validations.

In 2002, Mr. Switzer began working for Mannatech as a project manager in the Product Development and Regulatory Affairs departments. He now serves as Mannatech’s Vice President of Research and Development and is responsible for Product Development, Quality Assurance, Product Science and Substantiation, Clinical Studies and Adverse Event Reporting.

Hide Biography
Morgan Barg, MS
Senior Manager, Asia-Pacific Regulatory Affairs
See Biography

Ms. Barg joined Mannatech in 2005. As a part of the Regulatory Affairs Team, she provides initiation, guidance and oversight for new product labels and labels requiring revision (due to ingredient changes, country-specific updates or changes in regulations) for Australia, New Zealand, Singapore, Japan, South Korea and Taiwan. She also provides technical support for new and current products in Australia, New Zealand, Singapore, Japan, South Korea and Taiwan regarding ingredient acceptability, possible claims, registrations and listings. From January 2005 through June 2011, Ms. Barg was a scientist on Mannatech’s Research and Development Team. She earned a BS in Animal Biology with a minor in Chemistry from Tarleton State University and an MS in Industrial Chemistry from the University of North Texas.

Hide Biography
Gary Carter, BS
Director, Regulatory Affairs
See Biography

Mr. Carter brought his foreign food laws expertise to Mannatech in 2000, and has since helped the company realize its international expansion objectives. He has played an integral role in opening Mannatech’s markets in Japan, New Zealand, Taiwan, Korea, Germany, Denmark, South Africa and Singapore. Prior to joining Mannatech, he spent six years as the Laboratory Manager for the Oregon Department of Agriculture’s Export Service Center, advising many of the top U.S. food manufacturers about product exportation issues, including formulation and labeling, foreign government testing, customs clearance and other regulations. Mr. Carter worked closely with foreign government officials to implement the Export Center programs and frequently hosted them at the Oregon laboratory. Earlier in his career with the Department, he spent four years as a chemist specializing in the testing of food and agricultural products. Mr. Carter earned a BS in Science Education from Oregon State University and a BS in Chemistry from Portland State University.

Hide Biography
Dana Fuller
Manager, R&D Projects and Administration
See Biography

Mrs. Fuller handles the administrative and scheduling tasks for Mannatech’s R&D/Technical Services team, including payroll, budgets, meeting schedules and travel. She provides administrative support to Mannatech’s CEO and Chief Science Officer, Dr. Robert Sinnott, and serves as the head of Mannatech’s administrative assistants’ team. Dana joined Mannatech in 2007.

Hide Biography
Monica Hunter
Assistant, Regulatory Affairs
See Biography

As a member of Mannatech’s Regulatory Affairs team, Ms. Hunter works closely with other Mannatech teams and product manufacturers and vendors to provide support for the production of new product labels and labels requiring revision for Australia, New Zealand, Singapore, Japan, South Korea and Taiwan. Her tasks include label processing, documentation and compilation utilizing necessary software, and the preparation of required documents for international governmental regulatory agencies. She joined Mannatech in 1997.

Hide Biography
Jeremy Janssen, BA
Senior Regulatory Affairs Associate
See Biography

Mr. Janssen, who joined Mannatech’s Product Development team in 2009, manages interdepartmental teams that guide new products from concept to launch. He also performs numerous interdepartmental functions, working closely with Quality Assurance and Regulatory Affairs. Before joining Mannatech, Jeremy worked as a Quality Assurance Coordinator for a pharmaceutical company. Mr. Janssen earned his BA in Biochemistry with a minor in Biology from Texas Tech University.

Hide Biography
Dr. Rolando L. Maddela, MD, MPH, CCRP
Director of Clinical Research and Scientific Affairs
See Biography

Dr. Maddela, Director of Mannatech’s Clinical Research and Scientific Affairs, oversees the administration of product clinical trials and Mannatech’s product Safety Monitoring Program. He ensures Mannatech’s adherence to Standard Operating Procedures, Good Clinical Practice and other regulations set by national and international agencies. Dr. Maddela earned a Bachelor of Science in Public Health in 1982 from the College of Public Health at the University of the Philippines and his MD in 1986 from the College of Medicine-University of the East in Metro Manila, Philippines. In 1990 he obtained his Master of Public Health (MPH) degree with Distinction from the Braun School of Public Health and Community Medicine at the Hebrew University in Jerusalem, Israel. He completed the Clinical Research Professional Development Program at the Kriger Research Center in New York City in 2006 and participated in the Clinical Trials Management course in the Graduate Summer Institute of Epidemiology and Biostatistics at the Bloomberg School of Public Health of the Johns Hopkins University in Baltimore, Maryland in 2007. Dr. Maddela is a Certified Clinical Research Professional (CCRP). The Society of Clinical Research Associates (SOCRA) awards the CCRP designation to health professionals who have demonstrated an internationally accepted level of knowledge, education, and experience in clinical research. Dr. Maddela has also completed coursework on various topics related to Public Health, Clinical Research, Data and Project Management, and Leadership with SOCRA, Coursera, Bloomberg School of Public Health- JHU, Vanderbilt University, The University of Texas at Arlington, and the South Central Public Health Partnership.

Hide Biography
Sharon McNair, BA
Manager, Quality Assurance
See Biography

As Quality Manager, Ms. McNair is responsible for managing processes and policies to ensure that Mannatech is producing and selling the highest quality products. This includes the enforcement of these processes throughout the company and its affiliates, with an emphasis on proper documentation, auditing, and corrective and preventative actions (CAPA), all of which result in continuous process improvement. Ms. McNair earned a BA in Chemistry from Mississippi State University and is a Certified Quality Auditor (CQA) by the American Society for Quality. She joined Mannatech in 2003.

Hide Biography
Bhavna Patel, BS
Director, Product Engineering and Development
See Biography

As a leader in Mannatech’s Product Development team, Ms. Patel takes abstract product ideas and develops them into feasible formulations for new products. She also helps maintain the momentum of products in Mannatech’s product development pipeline. Prior to joining Mannatech, Ms. Patel led the commercialization of sterile products for a Chicago-based pharmaceutical company. She has also worked for food and cosmetic development/manufacturing companies in Florida. Ms. Patel earned her BS in Chemical Engineering from the University of Florida. She joined Mannatech in September 2002.

Hide Biography
Jane Ramberg, MS
Director, Product Substantiation
See Biography

Ms. Ramberg joined Mannatech in 1997. She was instrumental in launching Mannatech’s first educational Web site in 2000 and writes much of the content posted on MannatechScience.org. She writes extensively about health and nutrition, is responsible for Mannatech’s product substantiation files, and works with scientific collaborators on Mannatech’s research initiatives. Before she joined Mannatech, Ms. Ramberg was a scientist at the University of Texas Southwestern Medical Center at Dallas and the Dallas Veterans Administration Hospital. Jane earned a BS in Biology from Wellesley College and an MS in Botany from the University of Minnesota.

Hide Biography
Lisa O'Grady
Clinical Research Associate
See Biography

As a member of Mannatech’s Research and Development team, Ms. O’Grady works with U.S. and International offices and manufacturers to analyze and process all product quality and safety reports in accordance with laws governing dietary supplements. Her tasks also include the preparation of required documents for FDA reporting and the management of Kosher and NSF certifications of Mannatech products.  In addition, Ms. O’Grady assists with clinical research projects.  Lisa began her career at Mannatech in 1997 in the Call Center, where she was quickly promoted to a Supervisor position.  She later worked with the Art and Design team in Marketing.  Ms. O’Grady has been with Mannatech’s Research and Development team since 2004.

Hide Biography
TOP