can you drink alcohol while getting b12 injections How to Give a Injection: Step-By-Step Instructions Vitamin B12 Injection Dosage for
Description
pylori can cause deficiency in vitamin B 12 secondary to malabsorption disorders (see Causes of vitamin B 12 deficiency)

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Seizure medications such as phenytoin and phenobarbital, as well as diabetes medications like metformin, can lower B12 levels over time

Its important not to increase the frequency of B12 injections without medical guidance, as unnecessary supplementation offers little benefit for most people, and your body will naturally eliminate what it doesnt need

Why Vitamin B12 Matters During Breastfeeding Vitamin B12 plays a vital role in energy production, neurological function, and red blood cell formation
Would surmise this has something to do with blood-flow/circulation then