I was really stunned to learn about these infusions. Sometimes I wonder what people will come up with next. I think that the trend of intravenous infusions is potentially very dangerous. Intravenous infusions should only be given in a medical setting and for a real medical problem. The two most common reasons to give an intravenous infusion are to re-hydrate a dehydrated person or to administer antibiotics or other medications to someone who is ill.