A focusboost within 30 minutes.

  1. Optimizes the functioning of the brain

  2. Works up to 5 hours after ingestion

  3. 100% natural

FLVX improves your mental performance. It contains nootropics that have been scientifically proven to bring you into the ideal mental state to get things done – without feeling restless and without crash.

  • 10% Discount
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Improved Focus

The compounds in FLVX improve your focus from 30 minutes to 5 hours after ingestion. This means you can work more effectively and get more done.

A Healthy Brain

Are you sick of coffee and energy drink? FLVX contains compounds that support healthy brain function.

Natural ingredients

FLVX contains exclusively natural ingredients and is produced in the Netherlands according to a HACCP certification. Read More.

Ingredients per Serving

& Scientific evidence



500 Mg

Known for its stimulating effect and the transferral of energy to your brain cells.

Gives your brain more energy [Reference 1]
Stimulates the absorption of Acetylcholine, a compound involved in the concentration process [Reference 2]



100 Mg (± 1 cup of coffee)

The most widely used psychoactive substance in the world.

Promotes alertness [3]
Improves different elements of the cognitive performance in healthy young adults. [4,5,6,7]



200 Mg

An amino acid found in tea, amongst other things. It promotes relaxation and stimulates ‘alpha’ brain waves.

Reduces stress and anxiety [8]


Caffeine + L-theanine synergy

This combination exhibits strong synergies for improving mental performance when taken in a 1: 2 ratio.

Improves performance in tests for word recognition, fast visual information processing, attention and mood [9,10,11]
Reduces the elevated blood pressure caused by caffeine when used alone [12,13,14]


Rhodiola Rosea

300 Mg

A plant extract that has been used for thousands of years in China and Scandinavia.

Reduces stress  [15]
Can counter the mental deterioration caused by stress and fatigue [15,16]


Vitamines B6, B11 & B12

20 / 0,1 / 1 Mg

Building blocks for healthy brain function. These building blocks act as essential co-factors in the production of dopamine and the conversion of energy in the brain.

B12: A deficit correlates with a higher risk of depression and mood instability [17]
B6: Can strengthen the short and long-term memory and improves the ability to process verbal stimuli [18,19,20]


1.Berg J.M., Tymoczko J.L., Stryer L. Biochemistry. 5th edition. New York: W H Freeman; 2002.

2.White HL1, Scates PW. Acetyl-L-carnitine as a precursor of acetylcholine. Neurochem Res. 1990 Jun;15(6):597-601.

3.Camfield DA, Stough C, Farrimond J, Scholey AB. Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis. Nutrition reviews. 2014; 72(8):507-22.

4.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), 113-122. doi:10.1016/j.biopsycho.2007.09.008

5.Johnson, L. C., Spinweber, C. L., & Gomez, S. A. (1990). Benzodiazepines and caffeine: effect on daytime sleepiness, performance, and mood. Psychopharmacology (Berl), 101(2), 160-167.

6.Einother, S. J., & Giesbrecht, T. (2013). Caffeine as an attention enhancer: reviewing existing assumptions. Psychopharmacology (Berl), 225(2), 251-274. doi:10.1007/s00213-012-2917-4

7.Smith, A. P., Kendrick, A. M., & Maben, A. L. (1992). Effects of breakfast and caffeine on performance and mood in the late morning and after lunch. Neuropsychobiology, 26(4), 198-204. Doi:118920

8.Smith, A., Kendrick, A., Maben, A., & Salmon, J. (1994). Effects of breakfast and caffeine on cognitive performance, mood and cardiovascular functioning. Appetite, 22(1), 39-55. doi:10.1006/appe.1994.1004

9.Wilhelmus, M. M., Hay, J. L., Zuiker, R. G., Okkerse, P., Perdrieu, C., Sauser, J., . . . Silber, B. Y. (2017). Effects of a single, oral 60 mg caffeine dose on attention in healthy adult subjects. J Psychopharmacol, 31(2), 222-232. doi:10.1177/0269881116668593

10. Unno, K., Tanida, N., Ishii, N., Yamamoto, H., Iguchi, K., Hoshino, M., . . . Yamada, H. (2013). Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary alpha-amylase activity, trait anxiety and subjective stress. Pharmacol Biochem Behav, 111, 128-135. doi:10.1016/j.pbb.2013.09.004

11. 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), 283-290. doi:10.1179/147683010×12611460764840

12. Kahathuduwa, C. N., Dassanayake, T. L., Amarakoon, A. M., & Weerasinghe, V. S. (2016). Acute effects of theanine, caffeine and theanine-caffeine combination on attention. Nutr Neurosci. doi:10.1080/1028415x.2016.1144845

13. Caldenhove, S., Sambeth, A., Sharma, S. et al. J Cogn Enhanc (2017).

14. Dodd, F. L., Kennedy, D. O., Riby, L. M., & Haskell-Ramsay, C. F. (2015a). 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), 2563-2576. doi:10.1007/s00213-015-3895-0

15.Ishaque, S., Shamseer, L., Bukutu, C., & Vohra, S. (2012). Rhodiola rosea for physical and mental fatigue: a systematic review. BMC Complementary and Alternative Medicine, 12(1), 70. doi:10.1186/1472-6882-12-70

16.Hung SK, Perry R, Ernst E. The effectiveness and efficacy of Rhodiola rosea L.: a systematic review of randomized clinical trials. Phytomedicine : international journal of phytotherapy and phytopharmacology. 2011; 18(4):235-44.

17.Morris MS, Fava M, Jacques PF, Selhub J, Rosenberg IH. Depression and folate status in the US Population. Psychotherapy and psychosomatics. ; 72(2):80-7.

18.Deijen, J. B., van der Beek, E. J., Orlebeke, J. F., & van den Berg, H. (1992). Vitamin B-6 supplementation in elderly men: effects on mood, memory, performance and mental effort. Psychopharmacology (Berl), 109(4), 489-496.

19.Lewerin, C., Matousek, M., Steen, G., Johansson, B., Steen, B., & Nilsson-Ehle, H. (2005). Significant correlations of plasma homocysteine and serum methylmalonic acid with movement and cognitive performance in elderly subjects but no improvement from short-term vitamin therapy: a placebo-controlled randomized study. Am J Clin Nutr, 81(5), 1155-1162.

20.Bryan, J., Calvaresi, E., & Hughes, D. (2002). Short-term folate, vitamin B-12 or vitamin B-6 supplementation slightly affects memory performance but not mood in women of various ages. J Nutr, 132(6), 1345-1356.