What is the sodium content in RXBAR Kids? Depending on the flavor, RXBAR Kids ranges from 65-80mg of sodium per bar. Find full nutrition and ingredient information on the bottom of this page. Buy kids protein bars here Related articles What is the protein content in RXBAR Kids? What is the shelf life of RX Nut Butter? Is RX Nut Butter Kosher certified? Does RXBAR use GMO ingredients? What does RX stand for?