Systems and methods are provided to generate an waveform for micro current therapy. The waveform includes overshoot signals overlaid on constant currents and is capable of stimulating cells or nerves to achieve healing. The system can include an oscillator configured to generate a reference signal, a pulse wave generator to generate a pulse waveform signal based on the reference signal, an overshoot generator to generate an overshoot signal based on the reference signal, and an output module to generate a composite output waveform signal based on the overshoot signal and the pulse waveform signal, wherein the composite output waveform includes one or more pulses having one or more overshoots that extend a width of each of the pulses. The system can be adjusted by a user depending on the disease, condition, or preference of the user.
