All Nitric Oxide (N.O.) products are based on the premise that they must act as signal messengers only. REDCELL is smarter, much smarter. In fact, it is the only N.O. product ever created to not only send, but receive those very same signals. In other words, REDCELL not only sends out the message to pump and build muscle, but it obeys it as well. Go ahead and picture every muscle in your body covered in padlocks. REDCELL is not just the key, REDCELL is the master key.