Hello Joe12.
About your IV Vitamin idea, Is this something along the lines of a Myer's Cocktail?
http://www.compmed.umm.edu/IV-infusions/
If so I would ask not to have a (blood thinner) inside if that's indicated as a possible component, as some people can react badly to it.
We are all adults and can make our own choices, however, I would only personally have one, if I had
proven significant vitamin deficiencies that you know will take a while to build up on, or may not elevate much if your stomach cannot process the tablets via your gut via some kind of malabsorption problem.
If you have blood tests that show you're really deficient, and you can afford to have it carried out safely by a good quality doctor/nurse then why not? Certainly if it makes you feel better and you don't mind having an IV stuck in your arm, then it's your choice and if it helps, then great. On that basis, if a celebrity rock singer can have one who is perfectly healthy, then depleted people should be able to have one too.
I'd just look at it in a balanced way. What are the claims of the therapy, would it work in your individual case, and can you get it done in a safe manner by people who know what they're doing?
For example, if you had very high oxidative stress levels, then you could say yes, IV Vitamin C should decrease oxidative stress etc etc.
Hope that helps,
All the best.