NutraKey GABA is offered as a pure powder, providing a massive 3000mg dose per suggested serving. This form allows for precise and flexible dosing, which can be a pro for experienced users, but also a con for beginners who might find it challenging to measure accurately. The price per serving for a powder is somewhat high compared to other bulk GABA powders or even high-dose capsules. The very low review count suggests it's not a widely popular choice, and as a standard GABA, its absorption and efficacy remain part of the broader scientific debate, limiting widespread adoption.