What is the protein content in RXBAR Kids? Our RXBAR Kids bars contain 7g of protein per bar. Find full nutrition and ingredient information on the bottom of this page. Shop RXBAR Kids here. Related articles What is the sodium content in RX Nut Butter? Is RXBAR Kids Kosher certified? Is RXBAR Kids paleo-friendly? Does RXBAR use cooked egg whites? What is the shelf life of RXBARs?