This chapter covers the Low frequency currents. Starting from faradic type current, modified faradic current, iontophoresis, commonly used ions and their indications for use, methods of treatment, safety and precautions have also been included. TENS, types of TENS, methods of treatment, indications for use, dangers and contraindications, MENS are also added. Indications for the use of low frequency currents and physiological effects of low frequency currents have been explained in detail. Methods of treatment are the special features of this chapter. Comprehensive proforma for the assessment of the patient’s condition has been formulated for the convenience of the students. Methods of median nerve stimulation, ulnar nerve stimulation, radial nerve stimulation, Erb’s paralysis, facial nerve stimulation, deltoid inhibition, quadriceps inhibition, lateral popliteal nerve stimulation, faradism under pressure and faradic foot bath have been explained in detail. Common motor points have also been demonstrated.