The DAA options should be, essentially, the exact same product, so we say shop by value. AI Sports Nutrition D-Aspartic Acid Powder, at $ per serving, is your best bet if you are looking for a powder. Prefer pills? AI Sports Nutrition also offers its D-Aspartic Acid line in capsule form. Keep in mind, though, any results you might get are minimal — and temporary. It’s like when you were a little kid and your mom put you in a booster seat. You seemed taller for a little bit during dinner, but once the booster seat went away, you were right back where you started.