Treatment consists of fluid and salt replacement (PO or IV) and rest in a cool environment. For mild cases, or if an overwhelming number of patients require treatment, a 0.1 to 0.2% saline solution can be given PO. Two 10-grain (650 mg) salt tablets dissolved in a quart of water provide a 0.1% saline solution. Many such electrolyte solution drinks (sports drinks) are commercially available and are much more palatable than 0.1% saline solution. More severe cases of heat cramps will respond to intravenous rehydration with NS. Patients with severe heat cramps may actually have hyponatremia and hypochloremia. Rarely, rhabdomyolysis occurs secondary to diffuse and protracted muscle spasm.