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12 mg remains the highest-efficacy dose, but it carries a meaningfully worse GI burden and a correspondingly higher dropout risk

Intravenous shots put B12 straight into the blood

If you are a strict vegetarian or vegan and do not eat any meats, dairy foods, or eggs, you will not get enough vitamin B12 from your diet alone

Here's how: Continue injections until B12 levels normalize Begin daily sublingual spray supplementation Gradually reduce injection frequency under medical supervision Monitor B12 levels with blood tests Maintain daily spray for ongoing support Always consult your healthcare provider before making changes to your B12 treatment plan