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Many patients choose the upper arm as their injection site because the subcutaneous tissue there provides reliable medication absorption and allows for easy self-administration
FAQ Should I take glutathione with food or on an empty stomach
Other means are available for diagnosing the presence of B12 malabsorption caused by PA, the autoimmune disease that destroys the cells producing intrinsic factor
However, comprehensive testing including sterility and endotoxin assays is expensive, often costing more per test than the product itself
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