how to administer b12 injection self-inject intramuscular vitamin - Overview Self-injecting vitamin B12. Quick and

Moreover, alcoholics may experience reduced intestinal absorption of vitamin B 12 (2), and individuals with acquired immunodeficiency syndrome (AIDS) appear to be at increased risk of deficiency, possibly related to a failure of the IF-B 12 receptor to take up the IF-B 12 complex (3)

For severe deficiency, the AAFP recommends loading doses typically daily or every other day for one to two weeks followed by monthly maintenance injections

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When to seek medical advice: Persistent or worsening injection site reactions (increasing redness, warmth, or discharge suggesting infection) Severe or persistent headaches Chest pain or palpitations Unexplained muscle weakness or cramps New or worsening neurological symptoms despite treatment Unexpected bleeding or bruising For non-emergency concerns, contact your GP or NHS 111

It is also helpful to follow medical advice and monitor your skin