D-aspartic acid is one of two forms of the amino acid aspartic acid. The other form is L-aspartate.

The benefits of D-AA are specific to it, and do not extend to aspartic acid or L-aspartate.

D-AA can be used as a testosterone booster for infertile men, and by athletes as a temporary booster. Elevated testosterone levels only last a week to a ...

D-aspartic acid is one of two forms of the amino acid aspartic acid. The other form is L-aspartate.

The benefits of D-AA are specific to it, and do not extend to aspartic acid or L-aspartate.

D-AA can be used as a testosterone booster for infertile men, and by athletes as a temporary booster. Elevated testosterone levels only last a week to a week and a half in healthy men, with testosterone returning to normal afterward.

D-AA works in the central brain region to cause a release of hormones, such as luteinizing hormone, follicle-stimulating hormone, and growth hormone. It may also build up in the testicles, where it alleviates a rate-limiting step of testosterone synthesis, which leads to a minor testosterone increase.


Different studies have used different supplementation protocols. One study used 3,000mg for 12 days, taken daily, followed by a week with no supplementation. A different study did not cycle D-AA, and used 2,000mg of continual daily supplementation with no harm. Further study is needed to determine whether D-AA should be cycled.

D-Aspartic Acid is one of the enantiomers of the amino acid known as Aspartate, where the common dietary enantiomer is L-Aspartate. 'Aspartic Acid' and 'Aspartate' are similar stuctures with aspartate being the conjugate base of Aspartic Acid, and interconversion occurring depending on the pH of the solution. The D and L refer to the direction the molecule bends light (with D-isomers bending light to the right, and L-isomers bending light to the left) and for all intents and metabolic purposes these two can be considered as different bioactive molecules. Molecules that differ only in their ability to bend light (those denoted with a D or a L, like L-Carnitine) are known as enantiomers, and a mixture of both enantiomers is called a 'racemic' mixture.

D-AA is a naturally occurring alternate form of one of the main 20 structural amino acids
D-Aspartic Acid can be found naturally occurring in the diet, with rich sources being (and the percentages referring to how much Aspartate is racemized in the D-enantiomer):

Soy Protein (9%)
Soy Based Infant Formula (10.8%)
Simulated Bacon (13%)
Nondairy Creamer (17%)
Casein (31%)
Zein (corn protein) (40%)
D-Aspartate can also be created (racemized) from L-Aspartate during the process of cooking or heating, and it has been reported that a doubling of D-Aspartate may occur in raw milk during the pasteurization process (from 1.5% to 3%).

D-aspartate co-exists alongside L-aspartate, and may be racemized based on the stimulus presented to the amino acids, with heat being most implicated in turing L-aspartate into D-aspartate

1.2. Biological Significance

L-Aspartate is non-essential amino acid and can be incorporated into protein structures, although D-Aspartate is not commonly associated with protein structures. D-Aspartate has been found to be a constituent of human cartilage, enamel, and can be accumulated in the brain as well as being a constituent of red blood cell membranes.[7]

Aspartate is a non-essential amino acid, and the D-isomer is not commonly used for structural proteins. It serves as a signalling molecule.

D-aspartate is an excitatory neurotransmitter. This seems to be present all across the brain, but to a higher extent in the pituitary and pineal gland.
Further research is needed on D-AA, as most studies attempt to assess D-AA’s role in the body under normal conditions, and not in the frame of supplementation.

The standard dose for D-aspartic acid is between 2,000 – 3,000mg.

D-AA is taken daily.

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DAA There are 4 products.

Showing 1 - 4 of 4 items
  • SCITEC NUTRITION DAA PRO 100 caps Potent, Natural Anabolic Hormone Testosterone Booster Supplement ! Advanced DAA Complex! - Significantly increased levels of testosterone - Increase endurance during exercise - Improves mood and concentration - Increases levels of growth hormone in the body - Increases the secretion of nitric oxide

    12,95 €
  • D-Aspartic Acid (DAA) is the newest natural testosterone booster on the market. DAA is the D-form of the amino acid aspartic acid. The body can produce DAA from the nonessential amino acid L-aspartic acid (the dietary form of aspartic acid). D-form amino acids, such as DAA, are found in higher concentrations in specific tissues in the body.

    9,95 €
  • DAA ULTRA is a natural modulator of endogenous testosterone synthesis, containing pharmaceutical grade D-Aspartic Acid with anabolic effect. It plays an important role in the nervous and secretory system. DAA ULTRA contains a unique dextrorotary form of aspartic acid, which enhances testosterone synthesis from cholesterol.

    9,99 € 14,99 €
    Reduced price!
  • TESTOSTERONE BOOSTER! Raising the level of testosterone in the body, increasing endurance during training, improve mood and concentration. Improve recovery after exercise! D aspartic acid (DAA) is an amino acid demonstrating the physiological effect.

    11,99 €
Showing 1 - 4 of 4 items