best place to self inject b12 Shots at Home: How, Where & How Often Yourself Vitamin C and B12 Injection
Description
"Is a low blood level of vitamin B12 a cardiovascular and diabetes risk factor

do not shake

So no alcohol the day or injection and drink lots of water

The overdose of vitamin B12 can worsen your existing problem of insomnia or might initiate insomnia as well by interrupting with your normal sleep cycle