What is the purpose of a continuous monophasic current in iontophoresis?

The purpose of a continuous monophasic current in iontophoresis is primarily to introduce drugs into tissues. Iontophoresis is a therapeutic technique that uses electrical current to facilitate the delivery of medication through the skin and into underlying tissues. The continuous monophasic current provides a consistent flow of electricity, which aids in the movement of charged drug molecules, allowing them to permeate the skin barrier effectively and achieve therapeutic concentrations at the target site.

This method is particularly useful for delivering anti-inflammatory medications, local anesthetics, or other therapeutic agents directly to the area needing treatment, thus enhancing the efficacy of the drug while minimizing systemic side effects. The focus on drug delivery distinguishes iontophoresis from other electrotherapeutic modalities that might aim for muscle relaxation or stimulation, which do not primarily involve the transdermal administration of medication.