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Caffeine + L-Theanine

Buy Our Caffeine + L-Theanine Supplement


L-Theanine and Caffeine are powerful energizing compounds found in mushrooms/tea and in coffee, respectively. Combining the two supplements provides synergistic effects. Caffeine has the chemical formula C8H10N4O2, while L-Theanine has the formula C7H14N2O3.


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Caffeine + L-Theanine Reviews



Caffeine + L-Theanine Benefits and Uses


L-Theanine is a fairly rare phytochemical and a non-dietary amino acid found primarily in a small number of mushrooms and in a tea plant called Camellia sinensis. Caffeine is a purine alkaloid and it is found predominantly in Coffea arabica, and has powerful stimulatory effects on the central nervous system. Scientific evidence suggests that the two compounds interact well together. 


Where to Buy Caffeine + L-Theanine Online?


LiftMode offers a variety of unit sizes of Caffeine + L-Theanine capsules – 70 count, 150 count, and 300 count units, with each individual capsule containing 100 mg pure Caffeine and 150 mg L-Theanine.  


All our products ship with a certificate of analysis from 3rd-party independent laboratories and all orders are covered by our 90-days refund/reshipment policy to ensure the highest quality.


Shipping restrictions: No shipping restrictions currently apply to this product and we are able to ship internationally. At checkout, the available shipping options for your location will be available.


Scientific Consensus:


Several clinical studies and meta-analyses have been conducted to elucidate the effects of the combination of these two compounds. The results tend to indicate an improvement in cognitive performance above and beyond what either supplement offers when taken in isolation. Nevertheless, further research is needed to fully understand the significance of the benefits of this supplement combination.


Warning: Caffeine can cause potential health risks if taken in excess. Do not exceed the recommended serving size and never exceed 400 mg of caffeine per day. Remember that coffee, tea and energy drinks contain significant amounts of caffeine – and this needs to be considered when consuming a dietary supplement that contains caffeine.

DO NOT EXCEED THE RECOMMENDED SERVING SIZE. Use with caution. Do not use if pregnant or breastfeeding.




All dietary supplements have risks. Please ensure that you are familiar with the latest research on effects, side effects, benefits, and uses of a supplement before buying it.

Store in a cool, dry place. Keep out of reach of children. If you have any underlying medical conditions or are taking any medication, please consult a medical professional before using this supplement. 

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.




How We Research Our Content

Our content is written using meticulous research methods and claims are backed by links to scientific references, wherever possible. The author and editors of Liftmode's Research Team have strong academic backgrounds in microbiology, physiology, and biochemistry.

Medically Reviewed by: Dr. Karen Vieira, PhD in Biomedical Sciences

Content Updated On: October 16, 2019




  • Einöther, S. J., & Martens, V. E. (2013). Acute effects of tea consumption on attention and mood. American Journal of Clinical Nutrition, 98(6 Suppl):1700S-1708S.

  • Temple, J. L., Bernard, C., Lipshultz, S. E., Czachor, J. D., Westphal, J. A., & Mestre, M. A. (2017). The Safety of Ingested Caffeine: A Comprehensive Review. Frontiers in Psychiatry, 8.

  • Dodd, F. L., Kennedy, D. O., Riby, L. M., & Haskell-Ramsay, C. F. (2015). A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood. Psychopharmacology (Berl), 232(14):2563-76.

  • Giesbrecht, T., Rycroft, J. A., Rowson, M. J., & De Bruin, E., A. (2010). The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness. Nutr Neurosci, 13(6):283-90.

  • Haskell, C.F., Kennedy, D. O., Milne, A. L., Wesnes, K. A., & Scholey, A. B. (2008). The effects of L-theanine, caffeine and their combination on cognition and mood. Biol Psychol, 77(2):113-22.