Vital Health Remedies Charley Horses combines pure essential nutrients for Complete Muscle and Nerve Support. Potassium, Magnesium and L-Taurine play significant roles in the heart, muscles and nerves of the body. Potassium plays an essential role in activating nerve impulses throughout your nervous system, regulating muscle contractions, the heartbeat and reflexes; Magnesium regulates muscle and nerve function and is involved in the contraction and relaxation of muscles; and L-Taurine supports the central nervous system, regulates muscle contractions and is vital for the proper function of magnesium and potassium.* *These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.