Orange juice DOES have potassium.
All citrus fruits contain healthy amounts of potassium. For adults, the recommended intake of potassium is about 2000 milligrams per day. Orange juice is one of the higher food sources of potassium at 236 milligrams per one-half cup.
Certain conditions will deplete the system of potassium and include diuretics and certain drugs. Excessive sweating also depletes the body of potassium so athletes need to ensure that they are replacing the loss after exercise. Since orange juice is such a high source of potassium, an athlete need only consume one cup of orange juice to replace the potassium lost during two hours of strenuous exercise.
Anderson, J., L. Young, and E. Long. “Potassium and Health.” Colorado State University Extension. N.p., n.d. Web. 21 Nov. 2011. http://www.ext.colostate.edu/pubs/foodnut/09355.html
“Potassium lowers blood pressure.” Health Information and Medical Information – Harvard Health Publications. N.p., n.d. Web. 21 Nov. 2011. <http://www.health.harvard.edu/fhg/updates/ update0705c.shtml>
“Potassium Content Of Foods List – Care Guide.” Drugs.com | Prescription Drug Information, Interactions & Side Effects. N.p., n.d. Web. 21 Nov. 2011. <http://www.drugs.com/cg/potassium-content-of-foods-list.html>.