Two B Vitamin tablets would have this same effect. Many people will take at least one before an important meeting or presentation.
Weightlifters will take B Vitamins. Usually complex. Calming effect, mutes nerve firings. I start fewer fights this way.
Parole officer always getting on me about that.
https://www.breitbart.com/politics/2020/02/06/nancy-pelosi-trump-looked-a-little-sedated-during-sotu/