A method of communicating product use instructions to patient includes: (a.) providing a group of product container with microprocessors, and, (b.) providing a central processor separate from the product containers. Each product container has the microprocessor attached to the container. The microprocessor includes: (a)(i) a wave file receiving chip; (a)(ii) a wave file storage means; (a)(iii) a wave file audio playback means; (a)(iv) an audio playback start means; and (a)(v) a power supply within the microprocessor. The central processor includes: (b)(i) user input means; (b)(ii) text-to-speech means; (b)(iii) wave file means to create a wave file from the text-to-speech means; and (b)(iv) wireless transmission means to transmit the wave file to the microprocessor wave file receiving chips of a plurality of OTC containers simultaneously. Wireless transmission may be radio frequency (RF) transmission systems, infrared (IR) transmission systems and any other wireless transmission systems that are now available or may become available.