Sound medicine

BMJ 1995; 311 doi: (Published 14 October 1995) Cite this as: BMJ 1995;311:1030
  1. Bernard Dixon, European contributing editor, Biotechnology

    In the United States you can now buy a battery operated ultrasound toothbrush, which emits the same low frequency ultrasound that some dentists use to clear away the plaque from our teeth. What next, I wonder.

    I can hazard a guess. Closely linked to the toothbrush with a sonicator under its bristles is the possibility that patients will in future carry pocket-sized ultrasound devices to propel their medicines through the skin.

    The idea of transdermal drug delivery is certainly not new. Patches releasing glyceryl trinitrate, for example, have long been available to treat angina pectoris. Yet the approach has not developed as …

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