Whitmore and Wallace, 2008
Patients who fear needles have less reason to be anxious here, as peptide needles are typically very thin and, therefore, not as painful
B12s role in creating red blood cells also means better oxygen circulation throughout your body, which is vital for nourishing your skin and scalp
It includes 1-5 intramuscular or subcutaneous injections of 1000 mcg crystalline cyanocobalamin daily, followed by oral doses of 1000-2000 mcg/day Parenteral administration should be reserved for those with significant neurological symptoms NICE guideline: Vitamin B 12 deficiency in over 16s: diagnosis and management: Malabsorption as the confirmed or suspected cause of vitamin B 12 deficiency: Offer replacement to people if: lifelong intramuscular vitamin B12 Autoimmune gastritis is the cause They have had a total gastrectomy They have had a complete terminal ileal resection If the person has a vitamin B 12 deficiency because of malabsorption that is not caused by autoimmune gastritis, or a total gastrectomy or complete terminal ileal resection (for example, malabsorption caused by coeliac disease, partial gastrectomy or some forms of bariatric surgery): Offer vitamin B 12 replacement and Consider intramuscular instead of
FDA banned it in late 2023 "Category 2: Substance with Safety Concerns" Why the FDA banned it: Potential immune reactions (immunogenicity) Manufacturing impurities in compounded versions Complete lack of human safety data Risk of contamination Legal status: NOT FDA-approved Illegal to compound in pharmacies Banned by WADA for athletes Possession not illegal (it's not a DEA scheduled substance) Sold online as "research chemical" 2
Bioavailability is high
