@CaptainAmerica I only inject Vit B12 every late fall/winter, don’t know jack shit about it to be honest. But, there are those clinics that are selling various Vitamin Injections/IVs for quite a steep price, and they seem to have quite the demand.
There must be something to it. But I really would research the hell out of it before going on about this, they can have severe side effects. E.g. Glutathion is great for recovery, but if you take it every day, you will end up leaving a lot of the gains on the table, since it is suppressing the local inflammation process of the muscles worked, which is the first step in hypertrophy. Using it once a week, on your off day, to drive recovery, that is a different picture and will help.
I’d be cautious with the vitamins OP, be sure to read a lot about it.