b12 injections sq or im Is intramuscular (IM) administration of vitamin preferred over subcutaneous (SC) administration? Best Vitamin B12 Injection Site:

A subcutaneous (under-the-skin) vial format exists, but the dose volume math makes injection awkward at common doses

Yu et al

While pyridoxine (vitamin B6) is typically considered helpful in reducing vomiting and nausea, the American Academy of Family Physicians (AAFP) mentions that cyanocobalamin (vitamin B12) also significantly reduced vomiting episodes in pregnant women compared with placebo, indicating its role in nausea and vomiting management

The authors reported that in obese mice, daily AOD-9604 administration over 14 days produced significant reductions in body weight gain, decreases in adipose tissue mass, and increases in fat oxidation, with effect sizes comparable to those of full-length human growth hormone [1]