Final thing, since you want to take a high dose, between 6-10 grams, what I'd advise you to do is put that 10 grams in a glass without water, take it as a shot, and wash that down with water.
It'll be quicker and it'll ensure that you get all of it into your system. High dose glycine doesn't dissolve too well in water, and you'll therefore find a lot at the bottom of your glass after consumption.
Glycine helps because its effectively a gaba antagonist, gaba agonists over time will increase your brain fog.