What is the protein content in RXBARs? On average, the ingredients in our standard bar contains 12 grams of protein per bar. You can find all nutritional information in the attached document or by visiting each product page. Shop RXBARs Related articles Can you freeze RXBARs? Can I eat RXBARs past their Best By date? Why is my RXBAR lighter in color? What's in an RXBAR? Does RXBAR use gluten ingredients?