The hormone taken by diabetics - is Insulin.
Because it is a protein, it is digested, just like a sirloin steak is.
insulin
Insulin is a hormone, and as such is therefore a protein. If we ate/drank it, upon reaching the stomach, it would be broken down by pepsin and also the tertiary structure would be denatured by the Hydrochloric Acid. Therefore we have to take it intravenously so it can travel directly through the blood stream, and reach its taken organ, usually the liver for glycogenesis.
Insulin
Insulin - a hormone which their bodies don't make enough of.
No. Trazodone is only available in oral form.
compounds, usually of medical orientaion, that are intended to be taken intravenously. http://www.kingguide.com/
It is typically snorted or smoked when it is in freebase or crack form. It can be taken orally and intravenously.
Prevnar is used as a treatment for diptheria. It is to be used intramuscularly and not taken intravenously. Side effects can include fever and sometimes slight seizure.
That is the most convenient way to take them. Sometimes they are given intravenously but that is usually done in hospital.
progesterone
While he was in the hospital he was too ill to eat and had to be fed intravenously.