IV therapy, commonly referred to as intravenous therapy, is the process of administering nutrients, minerals, and hydration straight into the bloodstream. IV therapy delivers nutrients to the body at the fastest rate possible, compared to oral vitamins. IV therapy is used by clients for a variety of purposes, including immune system stimulation, energy enhancement, skin health maintenance, and more. A certified nurse or nursing assistant will perform a thorough assessment, which includes a vital signs and medical history assessment, prior to starting this treatment.