Journal of Physiology-Paris , 112(1), 1-10
Its worth noting that adverse effects are not common with high supplemental vitamin B12 intake, however, there is also no strong evidence to show that it has benefits in people who are not already deficient (largely due to the fact that your body only stores as much B12 as it needs and any excess will be excreted through your urine)
For these dosages, a 1 ml syringe is often sufficient, providing the precision needed for proper administration
You can pick a preset frequency such as daily, twice daily, every other day, or a weekly pattern, or set a custom schedule
I have been taking vitamin B12 for about 6 months and my energy and health are amazing
Quantitative ultrasonographic analysis of changes of the suprascapular nerve in the aging population with shoulder pain