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Vitamin B12 Fact Sheet for Health Professionals

This is especially relevant for people with hormone optimization protocols who may be taking thyroid medications, hormone replacement therapy, or other compounds that depend on consistent absorption patterns

2017;5(7):e1388

(More information) Other Articles Vitamin B 12 has the largest and most complex chemical structure of all the vitamins

As an internal and family medicine doctor, Karen Thampoe, MD, provides comprehensive health care for adult and geriatric patients at West Houston Internal Medicine in Katy, Texas and is the owner and Medical Director of Katy Medispa

Additional gut health testing: In cases of a persistent or unexplained B12 deficiency, your primary care provider may recommend endoscopy, colonoscopy, or tests for celiac or Crohns disease