Natural Sport Beetroot Caps are formulated to provide nutritive support for your pre-workout routine. Beet root contains naturally occurring nitrates which are converted to nitric oxide in the body. Nitric oxide supports healthy circulation and helps to deliver oxygen to the muscles. Di-Arginine Malate is a form of the amino acid L-Arginine bonded with malic acid. D- Arginine Malate is intended to provide health nitrogen balance in the muscles, which helps support the body's natural production of nitric oxide.