how much b12 can you have in an im injection subq or injection site for b12 Instruction Guide for Intramuscular (IM) Self- injection of B12 Methylcobalamin 1mg/5mg Optimal Vitamin B12 Dosage and
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Nature 588 , 174179 (2020)

Avoid using it if youre allergic to vitamin B12

What homebound means in plain language Homebound doesn't mean a person is never allowed to leave the house
Most research has focused on how this fragment may influence fat and energy metabolism in preclinical systems

Taking high-dose oral B12 supplements can also greatly increase blood levels here, the same period of 7-10 days should be observed before testing

For example, one early protocol for substance uses disorders employed 500-1,000 mg of NAD+ per day delivered by slow intravenous infusion over several consecutive days