A truck semitrailer with Walmart's logo on a US highway.NurPhoto/Getty ImagesWalmart has recalled 9,535 cases of apple juice due to high arsenic levels.The recall affects the "Great Value" apple juices from beverage manufacturer Refresco.FDA raised the recall urgency to Class II, indicating that it may cause adverse health effects.Walmart has recalled nearly 10,000 cases of apple juice after its supplier discovered that the product contained higher-than-accepted levels of arsenic, a toxic substance.Refresco, which produces the "Great Value" brand 8-ounce apple juice bottles sold in Walmart, voluntarily recalled 9,535 cases of the product in 25 states across the country, the Associated Press reported.A Food and Drug Administration Authority (FDA) notice said that the 8-ounce, six-pack cases of apple juice were to be recalled because the product "contains inorganic arsenic above action level set in industry guidance."The authority had issued a recall notice on August 15 but bumped the risk level to a more urgent Class II category on Friday.