how often should i inject vitamin b12 Injection Dosage and Frequency: 7 Guidelines for Adults how often take b12 injections

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Lift the back of the scruff away from the spine

Patients should follow directions for dose, injection route, needle handling, storage, and disposal

The real question isn't "Injection or tablet?" It's "What's the right treatment for YOU?" Mild deficiency

Vitamin B12 is best injected intramuscularly into the deltoid (upper arm), thigh, or gluteal muscle (buttocks)

AOD-9604 Adolescent (12 to 17) Dosing: What Clinicians and Parents Need to Know At a glance Regulatory status / No FDA approval for any indication or age group Typical research dose in adults / 250 to 500 mcg subcutaneous once daily (not validated in adolescents) Adolescent trial evidence / Zero published RCTs in the 12, 17 age group Key safety concern / Potential interference with growth-plate biology and pubertal GH axis Compounding status / Available only through 503A compounding pharmacies under prescriber order Primary preclinical evidence / Heffernan et al