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Lancet Diabetes Endocrinol 9:653662
The mechanism of gastric bypass surgery is to cause restriction by creating a smaller stomach pouch and then causing nutrient malabsorption by bypassing a portion of the stomach and small intestine
Methylcobalamin form is the active form of vitamin B12 and does not require conversion in the body to be used
If a product is being supplied to a person for use in their body, it's a medicine, and the rules apply
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