D-Aspartic Acid (DAA)
Compound Type: Testosterone Booster / Amino Acid
D-Aspartic Acid (DAA) is a naturally occurring amino acid found in the pituitary gland and testes. It became a bodybuilding sensation after a 2009 study showed it raised testosterone by 42% in just 12 days. However, for the purpose of long-term Penis Enlargement and erection quality, the hype rarely matches the reality.
While effective for fertility in men with medical conditions, its track record for healthy men looking for growth or size gains is disappointingly inconsistent.
Does DAA Affect Penis Size?
Unlikely. While Testosterone is crucial for libido and erection quality, DAA’s ability to sustain high T-levels is flawed. It creates a temporary spike that the body quickly corrects.
The Science: The “Homeostasis” Crash
1. The 12-Day Spike:
Early research (Topcogi et al.) showed a rapid increase in Luteinizing Hormone (LH) and Testosterone. This is why many “cycles” are 2 weeks. DAA stimulates the brain to yell “MAKE MORE TESTOSTERONE” at the testes.
2. The “Return to Baseline” (Adaptation):
Subsequent studies on athletes found that after 28 days of supplementation, testosterone levels dropped back to baseline (or even lower). The body detects the unnatural spike and releases an enzyme (D-Aspartate Oxidase) to break the DAA down, neutralizing the effect.
3. Prolactin Risk:
Some anecdotal data suggests DAA may increase Prolactin levels in sensitive men. High prolactin is the enemy of erections—it lowers libido and increases the “refractory period” after sex. This is the opposite of what you want for PE.
✖ The Verdict: NOT RECOMMENDED
Too inconsistent. We do not recommend DAA for general Penis Enlargement. The boost is too short-lived to support tissue growth. You are better off using Ashwagandha or Zinc for sustainable, long-term testosterone support without the crash.
3g (3,000mg)
Daily (Cycle)
Must cycle: 2 weeks on/off
Safety Profile & Side Effects
- Digestive Distress: Very common cause of diarrhea/stomach cramps.
- Headaches / Irritability.
- Temporary libido crash (after stopping).
- Hormone Therapies: Do not take if on TRT.
- No major drug interactions, but hard on the stomach.
Data source: PubMed / Examine
Recommended Products
If you choose to cycle DAA, stick to pure powders for cost efficiency.
We suggest Ashwagandha for sustained T-support.