WHAT ARE D-ASPARTIC ACID CAPSULES? BULK POWDERS™ D Aspartic Acid Capsules provide 750mg of D Aspartic Acid per capsule, combined with Zinc to support normal test levels. The convenient capsule format also makes it even easier to consume D Aspartic Acid at any time of the day. D Aspartic Acid is the D-form of the amino acid aspartic acid & is produced naturally in the body from the non-essential amino acid L-Aspartic Acid. Within the human body, it is found in high concentrations in