One of the most common complaints from people who consume caffeine is the jittery, unsettled side effects that can accompany it. This is subjective, not everyone suffers from these side- effects but for those who do…we may have a solution to try.
Try combining L- Theanine with caffeine. According to Examine.com, L- Theanine is calming but not sedative, meaning you get the stimulation you require from caffeine without the unwanted jitters and over-excitement that makes it hard to concentrate and focus.
Examine.com, (2015). How to multiply the effects of your supplements. Retrieved 22nd June, 2015, from http://examine.com/insiders/maximizing-supplements/