I used it on average three times a week with large doses
So you think taurine has more noticeable effects than glycine or theanine or progesterone ?
Progesterone is more comparable to taurine.
Arginine in high doses I also found to have a substantial anti-anxiety effect. Arginine is actually a GABA receptor positive allosteric modulator (like benzos are). Any arginine supplement would work, I found, but I tended to use arginine pyroglutamate, as this is known to cross the blood-brain barrier more easily than other forms of arginine. I would typically take a heaped teaspoon of arginine pyroglutamate powder, which is about 5 grams.
Unfortunately, this would occasionally cause herpes cold sore flare up around my mouth, especially if taken many days in a row. But I discovered that snorting arginine pyroglutamate (around 100 mg) was actually almost as effective for anti-anxiety purposes, as I think this gets the arginine directly into the brain. And with these low intranasal doses, there was no cold sores.