Sports Nutrition Experts since 1993

Natural Bio Booster

  • 100% natural bio booster
  • Green tea and guarana synergy
  • Improved training performance
  • Efficient and natural fat burner
100% organic guarana and green tea Find out more
  • Antioxidant
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  • Booster
  • Energy
  • Fat burner
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  • Focus
  • Capsules
  • 120 Capsules
  • 400 Capsules
  • 800 Capsules
Optimal consumption date: 11/2023
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Dosage: 6 capsules during the day with a little room-temperature mineral water.
  • Receive a free product with orders over 70€
  • Free delivery on orders over 60€



6 capsules during the day with a little room-temperature mineral water.

What is Natural Bio Booster?

Nutrimuscle's Natural Bio Booster is a blend of two organically grown plants: it contains organic guarana and organic green tea, for a boost in your natural caffeine intake.

What are the benefits of the Natural Bio Booster?

Performance enhancement

Whether it's for strength training, power training or endurance training, taking Nutrimuscle's Natural Bio Booster before exercising will increase your performance.

Weight loss action

Nutrimuscle's Natural Bio Booster increases energy expenditure, moderates appetite and combats fatigue during a low-calorie diet, while accelerating the reduction of fat. It is a natural and effective fat burner.

Combined positive effects of green tea and guarana: 

The catechins in green tea are even more effective against fat in the presence of the caffeine contained in guarana. The theanine in green tea counteracts the side effects of caffeine while enhancing its anti-fat action

Caffeine helps to improve physical endurance, alertness and concentration.

Nutrimuscle Natural Bio Booster

What sets Natural Bio Booster Nutrimuscle apart from other boosters is the choice of ingredients. It is by no means a first price booster, bloated with caffeine or other chemical substance that works "too well", often causing a runaway heart, even palpitations, a peak of extreme stimulation, then a crash.

The objective of the Natural Bio Booster Nutrimuscle is to provide:

  • A gentle energizing action that gradually increases in power
  • A long-lasting effect that avoids brutal crashes
  • More beneficial effects thanks to a multitude of active ingredients, but with a lower dose of caffeine.


Ingredients of Natural Bio Booster

  • Organic Guayapi guarana (Paullinia cupana var. sorbilis)
  • organic Cha Guayapi Ceylon green tea (Camellia Sinensis)
  • capsule: vegetarian HPMC and water.

Nutrimuscle vegetarian capsules
100% vegetable cellulose 
Gelatin free
GMO free
No preservatives 
Allergen free
Sugar free
Starch free 

Nutritional values of Natural Bio Booster

Nutritional values per 100 g : 

  • Protein : 16,1g
  • Carbohydrates : 69,8g
  • Fat : 2,3g
  • Calories : 364 kcal
  • BCAA : 2,21g

In 6 capsules, Nutrimuscle Natural Bio Booster contains:

  • 1800 mg organic guarana
  • 1800 mg organic green tea.

With a total of 79.4 mg of natural caffeine.

Nutritional composition of Natural Bio Booster

100 g1 capsule6 capsules
Proteins16,1 g0,1 g
0,6 g
Carbohydrates69,8 g0,42 g
2,5 g
Fat2,3 g0,02 g
0,1 g
Calories364 kcal2,17 kcal
13 kcal
Energy1521 kJ
9,17 kJ
55 kJ
Guarana50 g300 mg
1800 mg
Green tea
50 g300 mg
1800 mg
Caffeine2,21 g13,23 mg
79,4 mg
  • 1 g (gram) = 1000 mg (milligram)
  • 1 capsule contains 600 mg of Natural bio booster.
  • 6 capsules contain 3600 mg of Natural bio booster. 

Usage tips

Who is Nutrimuscle Natural Bio Booster for?

Nutrimuscle Natural Bio Booster is for:

  • Athletes who want to boost their strength and endurance during training sessions
  • Inactive people who want to benefit from increased energy during the day
  • Inactive people who are looking for a natural fat burner to assist a diet and maximise weight loss.

When should I take Natural Bio Booster?

Before a training session
Take 4 to 6 capsules of Nutrimuscle Natural Bio Booster on an empty stomach, at least 2 hours before exercise and at least 15 minutes before a pre-training snack.

During the day
To get the best out of a day of work or study, or to fight against fatigue during a low-calorie diet while accelerating fat destruction, take 6 capsules of Nutrimuscle Natural Bio Booster, spread out over your morning and lunchtime meals.

In the evening
You should avoid taking Nutrimuscle's Natural Bio Booster too late in the evening, as it may prevent you from falling asleep easily.

How do I take Natural Bio Booster?

As with all fat burners, it's best to start slowly. Begin with 2 to 3 capsules to see how your body reacts. If all goes well, up your dose by one capsule the following day and repeat as necessary. Taking very high doses isn't beneficial. Simply stick to a moderate dose that you feel is effective.

Mixing with other Nutrimuscle products

Synergies between supplements
Contrary to popular belief, Nutrimuscle's Natural Bio Booster will in no way prevent the effects of creatine (Creapure®). On the contrary, their effects reinforce each other by increasing muscle performance and lean mass gain.

Nutrimuscle's Natural Bio Booster also reinforces the stimulating and fat-burning effects of Nutrimuscle's Natural Bio Burner and organic yerba maté.

Adverse reactions between supplements
Nutrimuscle's Natural Bio Booster is not to be taken at the same time as omega 3 in order to avoid disrupting proper assimilation.

Find out more

Purity of raw materials guaranteed

It's rare for consumers to have access to the names of the suppliers of the raw materials that go into the supplements they consume. However, this is essential when it comes to ensuring traceability and product quality.

Guayapi uses wild plants gathered by local tribes, always respecting traditions. Organic agriculture thus preserves the environment. Guayapi respects the quality regulations of many organic and fair-trade certification bodies. It's a far cry from industrial farming, chemical extraction, and GMOs. 

  • Guayapi guarana is cultivated in the Amazonian lands from which guarana originates. It is dried according to ancestral traditions, and roasting is forbidden. 
  • Guayapi green tea is grown organically. The leaves of this special variety of green tea (Ceylon: Ceylon Cha) are picked from small gardens in Sri Lanka. Moreover, the leaves are not fermented, they are simply steamed and rolled on mats.

Raw materials selected with the greatest care

Guarana and green tea are sold by many competing brands and it is rare to find these organic grade plants. This is the case with the Natural Bio Booster Nutrimuscle. What makes the difference between the various forms of guarana and green tea is not the caffeine content, it is the polyphenols (catechins, epicatechins) and tannins. With fast and inexpensive means of extraction, we destroy a large part of these active ingredients (1).

Indeed, there are several ways to cultivate and extract guarana (2):

  • A traditional technique, long and laborious therefore more expensive, but which respects the integrity of the active principles of the plant;
  • An industrial technique, much faster and less expensive, but which does not respect the active principles other than caffeine.

Thus, the fact of heating the guarana powder a lot in order to dry it after its extraction in liquid medium will damage its other active ingredients. The more we heat, the more time we save and the more we save, but the more we destroy the value of guarana (3). The same is true for other plant extracts such as green tea if we want to preserve the polyphenols (4).

The secret to obtaining extracts of guarana and green tea rich in polyphenols lies primarily in the method of drying. By avoiding high temperatures or roasting, all the active molecules are better preserved. In addition, it is important to use organic raw materials, especially when consuming the leaves as is the case with green tea. Indeed, if, during cultivation, we spray pesticides on these leaves, you will mechanically find traces of them in your supplements (5).

Benefits of Natural Bio Booster in more detail

The Natural Bio Booster Nutrimuscle can be used to meet five distinct objectives:

  • Give energy and strength before weight training;
  • Increase resistance during endurance training;
  • Increase energy expenditure, moderate appetite and fight fatigue during a low calorie diet while accelerating the destruction of fat;
  • Prevent fat gain at the end of a diet or when gaining muscle mass;
  • Go fishing for a day of study, work or play.

Performance improvement
Whether for bodybuilding, strength or endurance training, taking Natural Bio Booster Nutrimuscle before exercise will increase your performance. The mechanisms of action of these improvements are very diverse:

  • Increased force of muscle contraction;
  • Acceleration of fat mobilization, which provides additional energy;
  • Blockade of muscle adenosine receptors. When the molecules of ATP (adenosine triphosphate) are broken to contract the muscles, adenosine is released, adenosine unfortunately vector of fatigue;
  • Awakening of the central nervous system;
  • Contribution to the good maintenance of blood sugar and helps fight hypoglycemia;
  • Reduction of the feeling of painfulness of the effort;
  • Stimulation of testosterone production (6-7).

Green tea and guarana synergy
Catechins are even more effective against fat in the presence of caffeine, which is why guarana should be combined (19). The theanine in tea opposes the side effects of caffeine, while strengthening its anti-fat action. Likewise, there is a synergy between theanine and caffeine when it comes to brain performance (20).

Another benefit of green tea is that it helps prevent joint pain (21).

For more details on the specific benefits of green tea and guarana, you can consult the Find out more section of the associated product sheets.

Avoiding the cardiovascular dangers of caffeine
In order to achieve the goal of a booster as powerful as chemical stimulants, but without side effects, Natural Bio Booster Nutrimuscle plays on the diversity of its active molecules. Caffeine, although present, is only one of the many active molecules in Natural Bio Booster Nutrimuscle. The latter contains a large number of vasodilator substances which enhance the positive effects of caffeine, but counteract its vasoconstrictor action and therefore its main side effect.

Contrary to popular belief, caffeine is neither an NO booster nor a vasodilator. On the contrary, caffeine causes vasoconstriction (reduction in the size of blood vessels), which hinders blood flow. The heart has to work harder. He can even go so far as to get carried away; it results in palpitations.

Normally, during muscular effort, the vessels dilate in order to induce an increase in blood exchange. On the contrary, caffeine will block this beneficial effect of physical activity which is, in itself, a problem. In order to avoid this danger, nature has endowed plants rich in caffeine with other boosters that prevent the deleterious effect of this methylxanthine. However, these beneficial molecules must not have been destroyed during the extraction of the active ingredients from the boosters, as is often the case.

Caffeine helps to improve physical endurance, alertness and concentration.

Natural Bio Booster and Natural Bio Burner: what are the differences?

In order to dry faster, you can use the Natural Bio Booster Nutrimuscle during the day and the Natural Bio Burner Nutrimuscle in the evening, or even at night. Thus, your metabolism (and therefore your energy consumption, particularly in the form of fat molecules) will be increased 24 hours a day instead of just 12 hours a day. In this, the Natural Bio Booster Nutrimuscle can be seen as a day formula for weight loss and the Natural Bio Burner Nutrimuscle, a night formula for weight loss.

In general, the heavy use of fat burner prevents sleep and attacks the cardiovascular system, which results in palpitations. These are not side effects that you will find with the Natural Bio Burner Nutrimuscle and Natural Bio Booster Nutrimuscle alternation.

Scientific references

  • (1) Klein T. Development of an analytical method using reversed-phase HPLC-PDA for a semipurified extract of Paullinia cupana var. sorbilis (guaraná). Talanta. 2012 Jan 15;88:502-6.
  • (2) Smith N. Guaraná's Journey from Regional Tonic to Aphrodisiac and Global Energy Drink. Evid Based Complement Alternat Med. 2010 Sep;7(3):279-82.
  • (3) Pagliarussi RS. Fluid bed drying of guarana (Paullinia cupana HBK) extract: effect of process factors on caffeine content. AAPS PharmSciTech. 2006 Jun 16;7(2):E54.
  • (4) Grujic N. Effects of different extraction methods and conditions on the phenolic composition of mate tea extracts. Molecules. 2012 Mar 2;17(3):2518-28.
  • (5) Pérez-Parada A. Transfer of pesticides to the brew during mate drinking process and their relationship with physicochemical properties. J Environ Sci Health B. 2010 Nov;45(8):796-803.
  • (6) Beaven CM. Dose effect of caffeine on testosterone and cortisol responses to resistance exercise. Int J Sport Nutr Exerc Metab. 2008 Apr;18(2):131-41.
  • (7) Paton CD. Caffeinated chewing gum increases repeated sprint performance and augments increases in testosterone in competitive cyclists.Eur J Appl Physiol. 2010 Dec;110(6):1243-50.
  • (8) Zhang L. Caffeine in your drink: natural or synthetic? Anal Chem. 2012 Mar 20;84(6):2805-10.
  • (9) Costa Krewer C. Habitual Intake of Guaraná and Metabolic Morbidities: An Epidemiological Study of an Elderly Amazonian Population. Phytother Res. 2011 Feb 22.
  • (10) Subbiah MT. Studies on the nature of anti-platelet aggregatory factors in the seeds of the Amazonian Herb guarana (Paullinia cupana). Int J Vitam Nutr Res. 2008 Mar;78(2):96-101.
  • (11) Zamble A. Paullinia pinnata extracts rich in polyphenols promote vascular relaxation via endothelium-dependent mechanisms. J Cardiovasc Pharmacol. 2006 Apr;47(4):599-608.
  • (12) Haskell CF. A double-blind, placebo-controlled, multi-dose evaluation of the acute behavioural effects of guaraná in humans. J Psychopharmacol. 2007 Jan;21(1):65-70.
  • (13) Kennedy DO. Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng. Pharmacol Biochem Behav. 2004 Nov;79(3):401-11.
  • (14) de Oliveira DM. Paullinia cupana Mart. var. Sorbilis protects human dopaminergic neuroblastoma SH-SY5Y cell line against rotenone-induced cytotoxicity. Hum Exp Toxicol. 2011 Sep;30(9):1382-91.
  • (15) Thavanesan N. The putative effects of green tea on body fat: an evaluation of the evidence and a review of the potential mechanisms. Br J Nutr. 2011 Nov;106(9):1297-309.
  • (16) Rains TM. Antiobesity effects of green tea catechins: a mechanistic review. J Nutr Biochem. 2011 Jan;22(1):1-7.
  • (17) Bérubé-Parent S. Effects of encapsulated green tea and guarana extracts containing a mixture of epigallocatechin-3-gallate and caffeine on 24 h energy expenditure and fat oxidation in men. Br J Nutr. 2005 Sep;94(3):432-6.
  • (18) Phung OJ. Effect of green tea catechins with or without caffeine on anthropometric measures: a systematic review and meta-analysis. Am J Clin Nutr. 2010 Jan;91(1):73-81.
  • (19) Westerterp-Plantenga MS. Green tea catechins, caffeine and body-weight regulation. Physiol Behav. 2010 Apr 26;100(1):42-6.
  • (20) Owen GN. The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutr Neurosci. 2008 Aug;11(4):193-8.
  • (21) Shen CL. Dietary polyphenols and mechanisms of osteoarthritis. J Nutr Biochem. 2012 Jul 23.
  • (22) Henning SM. Randomized clinical trial of brewed green and black tea in men with prostate cancer prior to prostatectomy. The Prostate 2014 Early View
  • (23) Fei X. The association of tea consumption and the risk and progression of prostate cancer: a meta-analysis. Int J Clin Exp Med. 2014 Nov 15;7(11):3881-91.
  • (24) Yiannakopoulou EC. Interaction of green tea catechins with breast cancer endocrine treatment: a systematic review. Pharmacology. 2014;94(5-6):245-8.
  • (25) Li MJ. Green tea compounds in breast cancer prevention and treatment. World J Clin Oncol. 2014 Aug 10;5(3):520-8.
  • (26) Wang L.Tea consumption and lung cancer risk: a meta-analysis of case-control and cohort studies. Nutrition. 2014 Oct;30(10):1122-7.
  • (27) Ramshankar V. Chemoprevention of oral cancer: Green tea experience. J Nat Sci Biol Med. 2014 Jan;5(1):3-7.
  • (28) Huang CC. Tea consumption and risk of head and neck cancer. PLoS One. 2014 May 5;9(5):e96507.
  • (29) Moyle C.W. A. Potent inhibition of VEGFR-2 activation by tight binding of green tea epigallocatechin gallate and apple procyanidins to VEGF: Relevance to angiogenesis. Molecular Nutrition & Food Research. Article first published online: 22 JAN 2015
  • (30) Butt MS. Green tea and anticancer perspectives: updates from last decade. Crit Rev Food Sci Nutr. 2015;55(6):792-805.
  • (31) Fang CY. EGCG Inhibits Proliferation, Invasiveness and Tumor Growth by Up-Regulation of Adhesion Molecules, Suppression of Gelatinases Activity, and Induction of Apoptosis in Nasopharyngeal Carcinoma Cells. Int J Mol Sci. 2015 Jan 23;16(2):2530-58.
  • (32) Fujiki H. Synergistic enhancement of anticancer effects on numerous human cancer cell lines treated with the combination of EGCG, other green tea catechins, and anticancer compounds. J Cancer Res Clin Oncol. 2014 Dec 28. [Epub ahead of print]
  • (33) Tao L. Differential prooxidative effects of the green tea polyphenol, (-)-epigallocatechin-3-gallate, in normal and oral cancer cells are related to differences in sirtuin 3 signaling. Mol Nutr Food Res. 2014 Oct 20.[Epub ahead of print]
  • (34) Shan HM. Identification of Green Tea Catechins as Potent Inhibitors of the Polo-Box Domain of Polo-Like kinase 1. ChemMedChem. 2015 Jan;10(1):158-63.
  • (35) Zhang L. Novel mechanisms of anticancer activities of green tea component epigallocatechin- 3-gallate. Anticancer Agents Med Chem. 2014;14(6):779-86.
  • (36) Zeng L. Effects of physiological levels of the green tea extract epigallocatechin-3-gallate on breast cancer cells. Front Endocrinol (Lausanne). 2014 May 7;5:61.

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