Many urgent care centers, wellness clinics, and even pharmacies with in-house clinics offer B12 shots without an appointment
Food and Drug Administration's Pharmacy Compounding Advisory Committee will meet for two full days, July 23 and 24, 2026 , at the FDA's White Oak campus in Silver Spring, to vote on whether seven peptides should be added to the Section 503A Bulks List the federal whitelist that determines which active ingredients licensed compounding pharmacies are allowed to source as bulk drug substances
However, research chemicals remain available for purchase by individuals for legitimate research purposes
GPs can prescribe B12 injections following appropriate investigation, which should include: Full blood count to identify macrocytic anaemia Serum B12 and folate levels to confirm deficiency (using laboratory-specific reference ranges) Methylmalonic acid and/or homocysteine when B12 results are borderline Intrinsic factor antibodies if pernicious anaemia is suspected Additional tests depending on clinical presentation (e.g., thyroid function, coeliac serology) When both B12 and folate deficiency are present, B12 should be replaced before folate to avoid precipitating subacute combined degeneration of the spinal cord