Supplement Ingredient Guide: D-Aspartic Acid What is it? D-aspartic acid is an amino acid regulator of testosterone synthesis. It is also involved in the syntheses of NMDA (A stimulatory neurotransmitter). Indications Temporarily boost testosterone levels in athletes and infertile men. How much should I take? One should take 2-3g of D-Aspartic acid daily. Studies are yet to determine whether …
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