HEALTHNOT SUPPORTED
D-Aspartic Acid (DAA)
Early studies looked promising. Follow-ups showed no effect — or a decrease — in trained men.
EFFECTIVE DOSE
N/A — no reliably beneficial dose
HOW IT WORKS
Amino acid theorized to modulate LH and testosterone. Doesn't hold up in trained men.
WHAT TO LOOK OUT FOR
- Foundational 'test booster' ingredient — doesn't work in the population that buys it.
SIDE EFFECTS
- Some reports of reduced testosterone at higher chronic doses
SOURCES
Reviewed 11/1/2025 · Brawn Supplement Reviewer
Educational content. Not medical advice. Talk to a licensed professional before starting any supplement, especially if you take medications or have a medical condition.