Beta Alanine: is it legit?

Any of you take this stuff? Currently been trying to boost my cardio output wayyy up. Sitting at a 47.5 VO2 max, would like to get it into the 50s. I have a legit running program going in addition to lifting but if there’s something I can take (legal only) for a performance boost I’ll be all over it.
Benevolent Dictatorship
🚷 Anti-Degeneracy Crew 🚷