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A medical treatment used to drive positive or negative ions into a tissue, in which two electrodes are placed in contact with tissue, one of the electrodes being a pad of absorbent material soaked with a solution of the material to be administered, and a voltage is applied between the electrodes.



(also ionotherapy, ionic medication, medical ionization), a procedure in physical therapy that uses a direct electric current to introduce drugs into the body through the skin or mucous membranes. Iontophoresis increases the sensitivity of the receptors to the drugs, which retain all their pharmacological properties during the procedure.

The major feature of iontophoresis is the pronounced and prolonged therapeutic effect of low doses of drugs introduced through a specific skin “depot.” The procedure also permits local action in certain pathological conditions, for example, local vascular disorders that hamper the entry of a drug into a pathological focus from the blood. Several drugs can be used at the same time. A pulsating current of constant direction is used in some cases to increase the therapeutic efficacy of the method.

The sources of current and the method of application are the same as for galvanization (seeGALVANIZATION). Two electrodes with pads moistened in a solution of the drugs are placed on the skin, or one of them is inserted into a nostril, ear, vagina, or some other body cavity. In some cases a small cup with a solution of the drugs is used instead of a pad; a carbon electrode is immersed in the cup. Iontophoresis is used in the treatment of diseases of the central and peripheral nervous systems, disorders of the organs of movement and support, and gynecological diseases.


Ulashchik, V. S. Teoriia i praktika lekarstvennogo elektroforeza. Minsk, 1976.
Spravochnikpofizioterapii. Moscow, 1976.


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Developed by Iomed of Salt Lake City, Numby Stuff quickly and effectively delivers Iontocaine, Iomed's anesthetic medication, directly into the skin using a mild, low-level electrical current from a small, battery-powered dose controller.
Jessica Barrett, director of marketing, said, "It is products like IOMED's Numby Stuff that will enable employers to comply with the new OSHA standard, as well as meet the new pain management standards set by The Joint Commission on Accreditation of Healthcare Organizations (JCAHO) in 2001, in which patients must be informed about pain management options prior to undergoing painful, invasive procedures.
We have also restructured our field sales staff to bring costs more in line with current product sales and are aggressively seeking additional marketing and distribution collaborations including partners for Numby Stuff our local dermal anesthesia product," added Dr.
This new controller with simple push button operation delivers fast and effective local dermal anesthesia when used in conjunction with IOMED's Numby Stuff(R) electrodes and IONTOCAINE(R)(a), IOMED's anesthetic medication.