I suppose that the taurine supplementation is recommended because taurine water preserved cognition in mice. As I recall, cats can't synthesize it (not sure about mice), but humans can: "The major route for the biosynthesis of taurine, shown in Figure 1B is from methionine and cysteine via cysteinesulfinic acid decarboxylase (CSD), and typically requires oxidation of hypotaurine to taurine as the final step"
https://www.ncbi.nlm...cles/PMC3501277
This might explain why it hasn't done anything discernable for me, over tens of 8g doses. Of course I also realize that supplementing it might still have value if the synthesis is insufficient, or if the benefits accrue subtly over months. I've tried dissolving it in water, which is next to impossible, and also olive oil. For that matter, I tried it on low carb as well as low protein. Nothing to report.
I haven't had any problem. Taurine is readily soluble @ about 65 grams/L. Compare that to the most soluble amino acid (glycine @ 250 grams/L) and the least soluble (tyrosine @ .5 grams/L).