where to inject b12 shots Vitamin Best Vitamin B12 Injection Site:

Intramuscular (in the muscle) 23 gauge 1 inch needle

Patients lacking intrinsic factor, those with gastrointestinal surgery, or severe neurological symptoms benefit most from injections

In fact, 30-50% of patients with low active-B12 levels still show total levels of 150-300

It should not have any impact on your health

Dietary Deficiency: If your deficiency was purely due to diet (e.g., a vegan not supplementing) and youve since adjusted your diet or started regular oral supplements, you might eventually be able to space out injections more or even switch to oral maintenance, though this should always be carefully managed by your GP

This method completely bypasses the digestive system, which is particularly useful because it ensures that the vitamin is absorbed fully and immediately