Caffeine L-theanine Finishline

Combining caffeine and the relaxing amino acid L-theanine, found naturally in tea, produces synergistic effects which provide wakefulness that is calmed by the gentle effects of L-theanine.

Caffeine + L-Theanine Combination Benefits

• Supports cognitive performance (ref)*
• Promotes the benefits of caffeine without unwanted effects (ref)*
• Supports focus and attention (ref)*
• Promotes wakefulness and alertness (ref)*
• L-Theanine is General Recognized As Safe (GRAS) by U.S. FDA (ref)

Caffeine + L-Theanine Mode of Action

By combining L-theanine with caffeine, some of the undesirable side effects of caffeine use is lessened. L-Theanine is an amino acid naturally found in green, black, oolong, and white teas which promotes calm and relaxation by promoting alpha brain waves, the type of brain wave experienced before deep sleep or during meditation.  L-Theanine’s calming effects reduce caffeine’s stimulatory effects without modifying caffeine’s other mechanisms for focus. L-Theanine interacts with caffeine by “taking the edge off” but allows the alertness to remain (2).

Together, Caffeine + L-Theanine may improve cognitive performance, focus, and attention because they benefit cognition synergistically.

The cognitive benefits associated with the Caffeine and L-Theanine combination were based on 50 mg caffeine to 100 mg L-Theanine.  Our formula is based on a ratio of 1-part caffeine to 2 parts L-Theanine (6).

Caffeine + L-Theanine Dosage

Pure Nootropics’ Caffeine + L-Theanine provides 100 mg of caffeine and 200 mg of L-Theanine per 1 capsule. Suggested use for adults is 1 capsule by mouth once daily, or as directed by your healthcare practitioner.

Caffeine + L-Theanine Side Effects 

This formula contains caffeine which is known to cause side effects and interactions with medications and some herbs.  Please use responsibly and avoid if you are sensitive to caffeine. L-Theanine has GRAS status by the U.S. F.D.A. but may possibly reduce blood pressure and interactions could occur with some blood pressure medications, herbs, or other supplements. If you are taking any medications, herbs, or supplements, please consult your healthcare practitioner before beginning use of a supplement.

For further information, please see our References Tab above.