D Aspartic Acid D Aspartic Acid from The Protein Works is 100% pure D Aspartic Acid. It is an amino acid that has been shown to play a key role in helping promote muscle tissue growth and libido enhancement. Supplementing with TPW D Aspartic Acid can help stimulate certain signal molecules within the body which then in turn enhance activity within the testes and pituitary gland to help enhance lean growth, strength and energy. D Aspartic Acid Insight Since its introduction into the sports nutrition market, many studies have been done on D Aspartic Acid to test its performance enhancing properties. In one particular study, experts supplied a group of healthy, young males (aged between 27-37) with a daily dose of 3. 12g of D Aspartic Acid for 12 consecutive days. Results showed those male subjects that received the D Aspartic Acid displayed a 33% rise in T-levels compared to those who didn’t. Consequently, D Aspartic Acid has since been praised for being a supplement with great muscle building and strength enhancing potential. D Aspartic Acid Quality Here at TPW, you can have supreme confidence in the product quality and supply source. Each ingredient supplier must pass rigorous audits and checks before being given the TPW quality seal of approval. Traceability, quality, and consistency are the three things we demand on every single ingredient. This is our philosophy that flows through every product we manufacture and sets us apart in the world of sports nutrition today. Click on the Product Profile to see full product information for your absolute peace of mind. Please note that 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 in every product.