Is GABA Supplementation Worth It for Enhancing Hearing and Focus?

https://www.reddit.com/r/ReviewJunkies/comments/1snylmn/180_days_testing_whispeara_can_this_potent/

If you have ever walked into a room, turned your head because you thought you heard someone speak, and then realized you still could not make out the words, you know the frustrating half of hearing problems