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Self-administered B12 shots are generally recommended for individuals: whose bloodwork has documented low B12 levels Patients with pernicious anemia or a lack of intrinsic factor Individuals with Crohn's disease, celiac disease, or post-bariatric surgery malabsorption Vegans and strict vegetarians are unable to correct the deficiency through diet Older adults whose stomach acid production has declined with age Anyone on long-term metformin or proton pump inhibitors Across most of the U.S., injectable B12 is not sold over the counter a clinician has to write the script before a pharmacy can dispense it
Do not shake
The major portion is excreted within the first eight hours
Some users do their injection immediately upon waking, then do fasted cardio before breakfast
2 PMC (2024)NNMT inhibition mitigates obesity-related metabolic dysfunctions in animal models
They are, however, prepared by licensed 503A pharmacies using FDA-registered ingredients and strict quality standards
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