We identified that oncological treatments in general (chemotherapies, immunotherapies, and radiotherapies) often cause peripheral neuropathy, including cramps, characterized by an excess of protons due to metabolic and neuronal factors, such as sudden changes in pH, uremia, and aspects affecting neuromotor functions. Such situations and similar ones were eligible for an approach to decrease excessive ionic loads, expecting that such reduction would reduce or eliminate cramps, hypothesizing that such elimination would decrease muscle vulnerability to action impulses and increase relaxation power by the same mechanism. Forty (40) adult patients with cramps generated by oncological treatments were tested in this double-blind, randomized clinical trial, and the degree of efficiency of the product named "Magicramp® Electrostatic Charge Reducing Cushion" (MECRC), which aimed to reduce cramps by eliminating excess electrostatic ionic charges, was verified.