I second Theanine. Personally I've been taking it before my morning coffee and I notice that I am less jittery and less stressful, while still having that caffe

I second Theanine. Personally I've been taking it before my morning coffee and I notice that I am less jittery and less stressful, while still having that caffeine high. I will even take it alone sometimes before a high stress situations and it helps with the nerves. I oftentimes choose to consume Green Tea or Matcha as they contain a varying amount of natural Theanine. That said these are anecdotal and could very likely be the placebo effect.