b12 dosage injection schedule CYANOCOBALAMIN INJECTION, USP 30000 mcg/30 mL (1000 mcg/mL) 30 mL VIAL What is the recommended dosage

Some procedures require a central line for the infusion in a vein near the heart

doi: 10.1093/eurheartj/ehn170

Might be worth discussing with GP that under treatment of B12 deficiency increases the risk of developing permanent neuro symptoms

OSteen S, Comstock ML, Orozco JJ, Hamlin DK, Wilbur DS, Jones JC, et al

You can find some plant-based milk, cereals, and grains fortified with vitamin B12 on the market

In the ATTAIN-2 trial (participants with obesity and type 2 diabetes), GI adverse event rates were somewhat higher than in ATTAIN-1: nausea 20.1-36.4% versus 8.4% with placebo, vomiting 12.8-23.1% versus 3.8%, diarrhea 21.3-27.4% versus 15.0%, and constipation 17.7-22.4% versus 7.8%