can b12 injections cause headaches Headache: The Link Between Vitamin B12 and The Weird Connection Between B12
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Clinical Obesity, 9(5), e12312

Heavier individuals may require higher doses to achieve equivalent NNMT inhibition due to larger adipose tissue mass and potentially higher baseline NNMT activity

Severe vitamin B12 deficiency in an exclusively breastfed 5-month-old Italian infant born to a mother receiving multivitamin supplementation during pregnancy. BMC pediatrics 12.1 (2012): 1-5

5/5: ~0.167 mg tes + ~0.167 mg ipa
