Giving the medicine intravenously leads to the drug entering directly into the venous circulation. The shape of the rotational drug is determined by the size, speed and duration of injection. A venous thrombosis is used for the direct therapeutic effects, typical of general anesthesia and for treatment of cardiac arrhythmia, and intravenous doses are commonly used during the development of the drug for preclinical testing of compounds and also as a measure of absolute bioavailability for other dosage methods.
