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giving self b12 injection Injections at Home - Safety Guide for Self-Administration b12 self injection sites B12
Description
Study 3: Heffernan 2000, oral administration Citation: Heffernan M., Jiang W.J., Thorburn A.W., Ng F.M

(2020) 8:e000987

Lumbar epidural steroid injections are very precise, so healthcare providers performing the injection must have significant specialized training

Wound Repair and Regeneration, 6 (6), 524-530

Some people use sublingual delivery (powder held under the tongue briefly before swallowing) but there's no strong evidence this meaningfully improves bioavailability for this compound class
