b12 injection subcutaneous or im How to self-inject intramuscular vitamin - Overview Sublingual B12 vs. B12 Injections:
Description
Individuals on limited budgets who absorb oral supplements effectively can maintain B12 status economically

Signs someone may need MIC B12 injection support can vary, but patients often explore this option when they feel low on energy, inconsistent with wellness goals, sluggish, or interested in provider-guided metabolic support
For individuals who have problems with absorbing the vitamin, suffering from mild deficiency, pregnant women, a 1000 mcg dose is best

Adherence to the regimen is encouraged to effectively replete or maintain vitamin levels, but occasional timing adjustments are acceptable