Though considered rare, some people have reported anaphylactic responses
Beck 2012
This effect makes glutathione particularly popular among those looking to address discoloration caused by sun damage, acne scars, or age spots
B12 is stored quite well by the liver, so sometimes we dont see low levels on bloodwork even in someone who might be experiencing low intracellular levels of B12
INDICATIONS AND USAGE Cyanocobalamin is indicated for vitamin B 12 deficiencies due to malabsorption, which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiency Cyanocobalamin Injection, USP is also suitable for the vitamin B 12 absorption test (Schilling test)
The FDA Safety Landscape: What Prescribers Cannot Ignore Compounded hair loss formulations occupy a regulatory space that requires prescriber vigilance
