"4F" which is a metaphor for "For Friends/Family. We wanted to make the best product to help our best friends and family eliminate pain and discomfort with a product that was formulated to work. Our daily active lifestyles can be taxing on our bodies. Perhaps from years of living life to the fullest. From hikes, sports, biking and more. As much as these healthy activities are great for us, they also do put us in the position to fight pain and discomfort from inflammation, muscle soreness, and aching joints. The difference is worth talking about. Our products are made in an FDA audited facility to the highest standards. Each of our pain creams have a FDA registered NDC#. We tested lot's of formula variations until we got the best fighting results.