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Caffeine and L-Theanine for Focused Energy

Updated 23 January 2017
Lincoln Cannon


Caffeine (caféine or كافيين), whether in caffeinated beverages like coffee and tea, or in caffeine pills, is probably the most widely used nootropic in the world. Many don't know, however, that the cognitive effects of caffeine may be better, and the side effects of caffeine may be reduced, when you combine caffeine with l-theanine.

Caffeine is an alkaloid extracted from plants and often dehydrated to caffeine anhydrous, in which the caffeine molecule is separated from water. Although the amount of caffeine in coffee and tea varies, a common rule of thumb is that there are about 100 mg of caffeine in a cup of coffee. And there are about 25 mg of caffeine in a cup of tea.

L-theanine is an amino acid found in plant and fungal species. Typically, apart from dietary supplements, the only source of l-theanine in the human diet is tea. The amount of l-theanine in tea varies, with about 10 mg of l-theanine in a cup of green tea and about 25 mg of l-theanine in a cup of black tea.

Caffeine, alone, is well known as an energy booster. And that's for good reasons. Multiple peer-reviewed, double-blind, placebo-controlled clinical studies on humans have found that caffeine may provide a notable increase to anaerobic running capacity, power output, and wakefulness:

L-theanine, alone, is also an effective nootropic. Multiple peer-reviewed, double-blind, placebo-controlled clinical studies on humans have found that l-theanine may provide a notable increase to relaxation without sedation:

Unfortunately, some people experience distraction or jitters along with the energy boost from caffeine. But that's where the combination of l-theanine with caffeine can help. Multiple peer-reviewed, double-blind, placebo-controlled clinical studies on humans have found that caffeine and l-theanine, together, may provide an increase to focus:

Another possible side effect from caffeine, if consumed too frequently, is tolerance and dependence (or "addiction" as some may characterize it). Caffeine tolerance may reduce the overall nootropic benefit of caffeine use over time. And caffeine dependence may result in discomfort, such as headache, when you stop using caffeine. 

So how much caffeine is too much? How much can you take and still avoid caffeine withdrawal symptoms when you stop using it? According to the European Food Safety Authority (EFSA) guidance on caffeine, as well as the following studies, it is generally safe for adults who are not pregnant or nursing to use up to 400 mg of caffeine in a single day:

However, some people may still develop a tolerance to caffeine at low daily dosages, and thereby lose some of the nootropic benefits of caffeine. To ensure the nootropic benefits of caffeine remain fully available to you, avoid daily use.

Thrivous Surge

Based on these and other studies, Thrivous developed Surge Acute Nootropic. It's designed for occasional use when you need extra energy and focus. Each serving provides clinical doses of Caffeine and L Theanine, as well as Panax Ginseng. Surge is available to buy online in the Thrivous store.

Buy Surge Acute Nootropic

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