NOW Sports BCAA Powder rounds out the list as the bare-bones budget bulk option from a manufacturer with decades of GMP credibility. It's a correct free-form 2:1:1 (L-leucine, L-isoleucine, L-valine) at a low cost per gram, with nothing added — the no-frills choice for cost-conscious daily use from a brand you can trust.
The honest knock is dose and mixability. At roughly 3 g BCAA (~1.5 g leucine) per scoop it's the lightest serving on the list, so you'll likely double-scoop to reach an effective leucine dose, and free-form powder is bitter and clumps. It's the pick only if rock-bottom price and a trusted brand outweigh dose convenience; the unflavored powders above (#4, #6, #7) deliver a fuller per-scoop dose for similar money. As always, the category caveat applies — on adequate protein, this is a training tool, not a growth driver. Here's the breakdown.