Today's true sports drinks are still the classic Gatorade -- packed with the electrolytes potassium, magnesium, calcium, and sodium to provide energy during intense workouts -- as well as competitors such as Cytomax, Allsport, and Accelerade.
Certain medications can also cause Charley horse as a result of their side effects. Drugs such as statins or medicines prescribed for lowering cholesterol, blood pressure, diuretics, asthma medicines like terbutaline and salbutamol, morphine and lithium can trigger muscle spasms.
1 Low level of liquids in the body, while exercising, might be a probable cause of Charley horse. 2  Some spasms, especially in the neck area, might be the result of taking too much stress. 3  Charley horses in the upper leg are mainly caused by activities like running or jumping.