Iontophoresis / Phonophoresis
|Iontophoresis and phonophoresis are technologies that are capable of enhancing drug penetration through the skin. Phonophoresis uses ultrasonic waves to transmit molecules of drug through the skin, as opposed to iontophoresis, which uses low level electric current. Both techniques are used to treat inflammatory conditions such as arthritis, plantar fasciitis, tendonitis, bursitis, and carpal tunnel syndrome.
Iontophoresis: Many ionic drugs are available including several antivirals, various antibiotics, and other specific drugs. Iontophoresis of ionized drugs provided a 20-60 fold increase in penetration over topical application. Examples of successful applications of iontophoresis include:
Phonophoresis (or sonophoresis) combines ultrasound with topical drug therapy to achieve therapeutic drug concentrations at target sites below the skin. A cream or gel containing medications such as corticosteroids, local anesthetics, electrolytes, or antibiotics is applied to the treatment area and then massaged with a transducer head. The technique has been widely used in sports medicine since the 1960s by podiatrists, orthopedists, and physical therapists.
The method of preparation and quality of ingredients used for solutions or gels for iontophoresis or phonophoresis are critical to the success of the therapy and minimizing side effects.
Am J Sports Med. 1997 May-Jun;25(3):312-6