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HORMONAL SUPPORT

D-Aspartic Acid (DAA)

Testosterone · LH release · male reproductive health

MODERATE EVIDENCEVEGANREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Last reviewed: May 30, 2026
QUICK ANSWER

D-Aspartic Acid: Testosterone · LH release · male reproductive health. A non-essential amino acid concentrated in the pituitary and testes. Stimulates LH and may temporarily raise testosterone. Standard dose 3 g, taken in the morning, about $24/month. Evidence rating: moderate evidence.

What is D-Aspartic Acid?

D-Aspartic acid (DAA) is the D-isomer of the amino acid aspartate, concentrated in the pituitary gland and testes. It acts as a neurotransmitter that stimulates the release of luteinizing hormone (LH) and growth hormone. Studies in untrained men with low baseline testosterone show 30-60% increases in serum testosterone over 12 days at 3 g/day. Results in trained athletes with normal testosterone are more modest. DAA should be cycled (4-6 weeks on, 2 weeks off) to maintain effectiveness. Standard dose is 3 g per day in the morning.

WHY IT MATTERS

A non-essential amino acid concentrated in the pituitary and testes. Stimulates LH and may temporarily raise testosterone.

Where to buy

Nutricost D-Aspartic Acid Powder
RECOMMENDED
Double Wood, D-Aspartic Acid
3 g · Morning · ~$24/month

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Common questions

What is D-Aspartic Acid?
D-Aspartic acid (DAA) is the D-isomer of the amino acid aspartate, concentrated in the pituitary gland and testes. It acts as a neurotransmitter that stimulates the release of luteinizing hormone (LH) and growth hormone. Studies in untrained men with low baseline testosterone show 30-60% increases in serum testosterone over 12 days at 3 g/day. Results in trained athletes with normal testosterone are more modest. DAA should be cycled (4-6 weeks on, 2 weeks off) to maintain effectiveness. Standard dose is 3 g per day in the morning.
What is D-Aspartic Acid used for?
Testosterone · LH release · male reproductive health. A non-essential amino acid concentrated in the pituitary and testes. Stimulates LH and may temporarily raise testosterone.
What is the standard dose of D-Aspartic Acid?
3 g, typically taken in the morning. Approximate cost is $24 per month.
How strong is the evidence for D-Aspartic Acid?
Moderate evidence for its primary uses. See the full study list on the research page.

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