does vitamin b12 injections cause weight loss for B12 Injections for Weight Loss:
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FAQ What is the standard vitamin B12 injection dosage for adults with deficiency

doi: 10.1016/j.metabol.2020.154188 50 HussainMASchmitzOMengelAGlatzYChristiansenJSZapfJet al

These ranges come from allometric scaling of the animal work plus anecdotal reporting not human trials so anchor your expectations to that
