Across 117 first-hand reports, people mentioned a side effect 12 times (about 10 per 100 reports). The most common: acne, hair loss, brain fog. User reports show what people notice — they can't tell you whether D-Aspartic Acid is safe for you.
“I took 3g of d-aa/day plus 250-300mg of grape seed extract/day and 30mg of zinc/day ... I got increased acne, my hairline receded a bit, and my balls grew by probably 30%.”
“I love it, but I feel dumb as a post unless I take noopept or some racetam.”
“Testicular discomfort - 100% sure this was the result of the D-AA, again this stopped after I stopped taking D-AA.”
“Added 10-30lbs to my lifts already... Some facial acne... Random horniness... Increased appetite”
“Same results for me. Same time, same dosage. Shit's bunk.”
“I took those and a selection of other herbal test boosters - ocimum sanctum, d-aspartic acid, tongkat, maca, tribulus - and none of these seemed to do anything.”
Conclusion: Our results suggest that D-repeat of ASPN gene is mainly associated with male patients. The D13 polymorphism plays a protective role for OA in Caucasians male individuals while D14 plays a risk factor for KOA in male patients.
Conclusion: The present meta-analysis suggests that the ASPN D-repeat polymorphism is not associated with an increased KOA risk. However, future large studies with gene-gene and gene-environment interactions are needed to validate these findings.