Taurine is an amino acid and occurs naturally in the body. It’s thought that taurine helps brain and heart function in addition to lowering blood pressure. It’s also believed that taurine influences improved mental and athletic performance.
How does taurine interact with caffeine?
From a study in 2014 “if there are any interactions between caffeine and taurine, taurine might reduce the cardiovascular effects of caffeine.”
NLM 11 Mar 2011: Effect of taurine and potential interactions with caffeine on cardiovascular function
Taurine is not a stimulant – but it may improve brain function. There is no sound body of evidence that there’s any need to abstain from taurine. In fact, taurine may benefit you.