D Aspartic Acid from The Protein Works™ is 100% pure D Aspartic Acid powder. It is an amino acid that has been shown to play a key role in helping promote muscle tissue growth and repair. D aspartic acid is one of our most popular amino acid powder for those with mass and power goals. It can be added to your usual whey protein shake or some like to take it with their creatine shakes. This product is produced in-house at our very own production facility. It is supplied in a re-sealable foil pouch to ensure freshness and a scoop is included free of charge.