Further to this. It's something that has always bothered me about the talk of injected vitamins. From what I understand, the vitamins are mixed with saline and from what I've seen, require >50ml for beneficial usage.IV drip of more than 50 ml is illegal. Less than 50ml doesn't even rehydrate you and is NOT a drug anyway.
Vitamins B and C can be taken orally. Ever heard of Berocca? Because of this they are not routinely injected into players. They also have no proven performance enhancement qualities unless you are vitamin deficient.
Anyone with a medical background who can shed some light?
For example, this study http://www.nutritionj.com/content/11/1/7 mentions a 20ml iv injection of vitamin c with 100ml of saline over 30minutes.