b12 injection method How to Give a Injection: Step-By-Step Instructions B12 - Skin Revive MD
Description
This study concluded that the Ontario health care system could save $14.5 million in 5 years by switching to oral supplements, assuming that patients took the oral supplements as required

For most patients with vitamin B12 deficiency, high-dose oral supplements are as effective as intramuscular injections at raising serum B12 levels and resolving symptoms

This dosage-to-volume relationship affects absorption kinetics directly

(Biochemical Pharmacology)
