The invention is a device for transmitting acoustical energy between an ultrasonic generator, through a medicine-containing patch, and into the exterior surface of the skin of a patient, typically known as an ultrasonic transducer. The ultrasonic transducer emits a sonic transmission of variable intensity and frequency for the purpose of enhancing the absorption through the patients skin of pharmaceutical compounds stored within a transdermal patch or other medication holding device. The transducers are designed to accommodate an ultrasonic drug delivery system, which is worn by the patient.