Diving into the nuances of B12 Shots & B12 Injections: The Good, Bad, and Alternative
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

Other benefits include: Decrease in anxiety Improvement of quality of sleep Heart health support Immunity boosting Prevents osteoporosis Eases symptoms of morning sickness and decreases the risk of birth defects during pregnancy Reduces the risk of macular degeneration Additionally, vitamin B12 is one of the most important vitamins for hair, skin, and nail health, so another benefit of regular injections includes preventing hair loss and improving skin health and strength of the hair and nails
For milder cases, you might see subtle boosts in energy, brain fog reduction, and mood lifts within the first week or two
This does two things: Keeps NAD+ precursors available for actual NAD+ synthesis Depletes the methyl groups that fat cells use to maintain their metabolic "off" state The second effect is the more interesting one
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