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Despite this, people are buying and injecting themselves with unapproved research only peptides, typically purchased from online retailers a trend that has experts and health regulators concerned
Summary: Vitamin B12 injections for pernicious anaemia deliver hydroxocobalamin intramuscularly to bypass malabsorption caused by lack of intrinsic factor, rapidly correcting deficiency and preventing neurological damage
Nasal spray delivers lower bioavailability than injection, typically 40-60% compared to 80-95% for subcutaneous administration
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