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Since 2005
Kraken Kraken 320g (version 2)
Sparta Nutrition
41.76 $


All variants:

41.76 $With VAT
1.04 $ / serving
  • Complex pre-workout formula
  • Stimulation of the nervous system
  • Stronger production of nitrogen oxide
  • May improve muscle endurance
  • Reduces the level of fatigue during training
  • Intensifies thermogenic effect
  • Increases dopamine and noradrenaline level
  • Increases training effectiveness
  • Supports the reduction of fatty tissue
  • Synergy of the ingredients effects

Sparta Nutrition Kraken is a dietary supplement containing the complex of the components, stimulating nervous system and intensifying the production of nitrogen oxide directed to the improvement of training effectiveness.

L-Citrulline – non-protein amino acid, which is a precursor of arginine. Research shows that it increases the level of arginine in the circulation more effectively than the supplementation with sole l-arginine. It influences the increase of nitrogen oxide (NO) synthesis, which widens the lumen of blood vessels and improves blood circulation, increasing the inflow of nutrients to cells.

Beta-Alanine – along with l-histidine, they create dipeptide – carnosine. Carnosine is released from cells at the moment of pH drop, thanks to which it prevents the increase of acidity of muscles, which may be reflected in lower feeling of pain and better stamina during training. It may also contribute to more effective building of dry muscles, support the fight with oxidative stress and may slow down the aging of the organism.

Glycerol HydroMax® - the organic compound from the group of sugars. Glycerol is a strongly hygroscopic substance, binds many water molecules, thanks to which it contributes to the stronger hydration of the organism. High muscle cells hydration ensures optimal environment for anabolic processes and proper work of fibers. Glycerol in the previous years has been enjoying great popularity among sportsmen, because of its ergogenic properties.

Taurine – sulfuric non-protein amino acid, which may play the role of a neurotransmitter. In the brain it demonstrates the ability to activate GABA receptors, thanks to which it may reduce the part of undesired side effects resulting from taking stimulants. It influences the health of the nervous system and improves metabolism of glial cells. It intensifies fat emulsification, has anti-diabetic effect, may facilitates the fight with free oxygen radicals, supports the strength of the muscle contraction.

Agmatine sulfateagmatine is a strongly active arginine metabolite, which comes into being as a result of carboxylation. It is stored in neurons, protects the brain from toxins and is classified as neuromodulator. It is the inhibitor of NMDA receptors of the glutamatergic system and nicotinic receptors of acetylcholine. It may reduce the symptoms of depression, reduce pain and contribute to the reduction of addictions.

N-Acetyl-L-Tyrosine (NALT) – effectively assimilable form of tyrosine amino acid. Tyrosine is a substrate to the production of catecholamines, such as noradrenaline, adrenaline and dopamine, therefore it may result in better concentration, higher energy and motivation to act. It is also used to the production of thyroid hormones, therefore it may be useful for people aiming at increasing their level.

Eria Jarensis – the active component of this extract is N-Phenyldimethylamine, a substance similar in its activity to phenylethylamine (PEA). Contrary to PEA, it is characterized by longer activity, as this is not so quickly broken down by monoamine oxidase. It has a strong influence on dopamine level, which results in the characteristic mood elevation along with the increase of energy, concentration and motivation.

Caffeine – a compound from the group of methylxanthenes, abundantly occurring in caffeine and guarana. In increases the level of many neurotransmitters, mainly noradrenaline and adrenaline and to a lower extent dopamine, serotonin and acetylcholine. It is also known for its energizing effect and improving concentration. Thanks to the structural similarity to adenosine it may block its receptors, which results in reduced feeling of fatigue. It has thermogenic effect, which may intensify fat burning.

2-amino-6-methylheptane HCl (DMHA) – DMAA derivative (geranium), an alternative agent with a specific effect. It stimulates the nervous system and strongly stimulates thermogenesis, therefore it is especially attractive to people who want to burn the stores of adipose tissue.

L-Norvaline – an amino acid belonging to non-protein α-amino acids. Its interesting property is the ability to inhibit arginase enzymes, thanks to which it contributes to slower arginine metabolism and its increased concentration in the circulation.

High energy level and motivation to training
Without proper energy level we are not able to perform a good training with high intensity, therefore it is worth taking care about good condition of the nervous system before the planned activity. By modulating the levels of proper neurotransmitters, we have the ability of stronger activation of muscle fibers, the improvement of mind-muscle connection and the achievement of higher intensity, as by inhibiting the feeling of fatigue, we may shorten the time between the series of exercises.

Benefits of the growth of nitrogen oxide
The most popular effect of this gaseous hormone is diastolic influence on smooth muscles of blood vessels, widening their lumen and finally better blood flow. Higher NO level results in the feeling of muscle pomp, loved by bodybuilders, which not only ensures impressive visual effect, but also improves muscle nourishment by more effective inflow of energy substrates and oxygen.

Sparta Nutrition Kraken is recommended both to amateur sportsmen and professionals, who aim at maximizing the effects of training. It is especially beneficial to people complaining about lower energy level and lack of willingness to frequent trainings.

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Container size: 320 gServing size: 1 Scoop (8 g)Servings per container: 40
per portion (8 g)amount%DV
Vitamin B3 (as Niacin)30 mg125%
Vitamin B12 (Methylcobalamin)5.5 mcg229%
L-Citrulline2 g-
Beta-Alanine1.6 g-
HydroMax® Glycerol Powder (65%)1 g-
L-Taurine500 mg-
N-Acetyl-L-Tyrosine250 mg-
Caffeine Andyrous175 mg-
Vaco-6 (Gallate-Enhanced Oligomers)150 mg-
TeaCrine (Tasteless 40%) (Teacrine)125 mg-
Theobromine (Theobroma cacao extract (seed)25 mg-
Cocoa seed extract (20% N-coumaroyldopamine)15 mg-

Other ingrednients

Natural and artifitial flavors, Citric acid, disodium phosphate, sucralose, malic acid,FD&C Blue1, FD&C Yellow5, Silica

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Vitamin B3


Vitamin B3 (vitamin PP, niacin, nicotinic acid, nicotinamide) is niacinamide niacin. It is used in interaction with vitamins B1, B2 and B6 in the synthesis of hormones during lactation. It provides proper functioning of the brain and nervous system. It is helpful in inflammatory conditions of the skin. Required for synthesis of sex hormone, estrogen, testosterone, cortisone, and insulin. It does not lose its properties in the manufacturing and storage. The source of acquiring vitamins PP are both products of animal origin (the lean meat, eggs, fish) and vegetable origin (dates, figs, hazelnuts, plums).
Dosage: 2-12 mg / day for children, 14 mg / day for women, 16 mg / day for men and 17-18 mg / day for pregnant or nursing women.


Vitamin B12 (Cobalamin)


Vitamin B12 (cobalamin, cyanocobalamin) is a vitamin soluble in liquids. Participates in the production of red blood cells and is essential in the absorption of iron by the body. It calming effect, a positive effect on concentration and memory. Intensifies its action in cooperation with folic acid (vitamin M). Usually occurs in animal products, fish and dairy products. It contains trace elements.
Vitamin B12 deficiency can lead to pernicious anaemia, general and immunity weakness, inhibiting of growth and damage to the myelin sheath of nerves.




What is methylcobalamin?

Methylcobalamin is a biologically active form of vitamin B12. It is one of the two forms of this vitamin that may be used as cofactors in various reactions. It differs from popular cyanocobalamin in the presence of methyl group instead of cyanide, thanks to which it releases the organism from the need of neutralizing this harmful factor.

The methyl group from methylcobalamin may be transferred to homocysteine, thanks to which it comes back in the form of methionine in order to be further converted to SAMe, which is the main donor of methyl groups in our organism. These methyl groups may be then used in the processes of creatine production, in neurotransmitter metabolism and as DNA methylation, thanks to which we achieve proper energy level, better well-being and generally better condition of the organism. B12 is a coenzyme for three enzymes: isomerase, methyltransferase and dehalogenase.

Apart from the influence on the nervous system, the supply of vitamin B12 is also very important for the proper synthesis of red cells as well as hemoglobin and anemia prevention.


Methylcobalamin in mono-supplements and complex vitamin preparations may be found in the offer of



What is L-Citrulline?

L-Citrulline is an α-amino acid, ornithine derivative. It was isolated for the first time from watermelon and this is how it gained its name, as citrullus in Latin means watermelon. Citrulline takes part in oxygen processes of energy production during effort, thanks to which it is especially attractive for sportsmen of endurance disciplines. It also takes part in urea cycle, also known as the Ornithine cycle, thanks to which it helps to get rid of excessive amounts of ammonia from the organism.

It converts to l-arginine in kidneys and scientific studies suggest that is increases its level even more effectively than in case of sole arginine. Moreover, the increase of arginine level resulting from citrulline supply is longer and more stable. Thanks to this, it contributes to the increase of nitric oxide and widening of blood vessel lumen. This property makes citrulline useful in preventing cardiological incidents. The positive influence on the circulatory system is also used in case of erection disorders, as increased nitric oxide may initiate more effective blood flow to sex organs.

L-Citrulline is contained in the composition of many pre-workout supplements and NO-boosters directed at the improvement of sports abilities of the organism, which may be found in the offer of




Beta-alanine (β-alanine) is a β-amino acid (the same group to which the I-alanine belongs, but with different chemistries). In combination with histidine, it forms β-alanyl-L-histidine (carnosine) - a antioxidant, chelating and buffering compound. Carnosine reduces the level of hydrogen ions in the cell and allows to extend the physical performance and endurance, it affects biological recovery after exercise. Beta-alanine is available in the form of single component and advanced amino-acid supplements, creatine stacks and nitrogen boosters.




Glycerol (glycerine, 1,2,3-propanetriol) simplest tricarboxylic alcohol, used in the manufacture of medicines (as a filler), cosmetics and food industry. Used in higher doses affect water and electrolyte balance of the body, increase exercise capacity and extend the duration of exercise in various sports. In the sports supplementation used for hydration of the muscle cells to increase the volume of muscle during exercise. Glycerol (sugar alcohol) increases the ability to hydrate the phosphorus muscle cells, allows better nutrition and increasing the volume. It also has an impact on water and electrolyte balance and energy production. By oral ingestion does not change the glycemic profile of blood. It comes in the form of solid and liquid (glycerine), as mono-preparation supplement or an ingredient of pre- and post-workout supplements (creatine stacks nitrogen boosters).
Dosage: 5-10 g per day dissolved in water, in the time before and after exercise. Beginning of application should be started on low doses and gradually reach the maximum, commonly used in sports supplementation dose.



Taurine – non-protein amino acid containing sulphur, which is synthesized in the body from methionine and cysteine, present in sufficient amount in human or animal body (in the brain, heart and skeletal), although in some cases must be supplemented. Significantly affects the calcium content in the cells and stabilizes the water and electrolyte balance and maintains acid-base balance. Takes part in the synthesis of bile acids. In the body acts as a neurotransmitter and neuromodulator. It is an insulin-mimetic improving insulin metabolism, responsible for transport of nutrients (such as amino acids, glucose, creatine) to the cells and muscle tissue. These properties determine that it is a valued mono-preparation supplement and valuable addition to creatine and amino acid supplements, recommended for psycho-pchysically active people and athletes and other competitive sportsmen in pre- and post-workout periods.
Dosage: 3 grams per day.




N-acetyl-L-tyrosine - acetylated form of tyrosine (an endogenous amino acid) improves the solubility and bioavailability of active ingredients. It can be used in lower doses than those taken as free tyrosine. It has a higher availability to the nerve tissue, reduces the feeling of fatigue, improves the exercise capacity psycho (psychostimulant), and, it is a additive to thermogenic effect preparations. It is used in medicine (increases levels of neurotransmitters including dopamine and norepinephrine) and sports dietary supplementation, in pre- and post-workout supplements, as well as fat burners, no-boosters and pre-workout creatine stacks and supplements and energizing beverages.
Dosage: In divided doses ranging from 100-300 mg per day.




Caffeine (1,3,7-trimethylxanthine, 1-methylotheobromine) is a purine alkaloid occurring in the natural state in plants (Coffea arabica, Camelia sinensis, Paulinia cupana, Ilex paraguariensis), which acts as a natural pesticide, acting toxic to insects. Peculiar smell and taste also deters herbivores. Caffeine in the body inhibits the adenosine receptors in the brain, fighting fatigue and allowing for action activation. It has a beneficial effect on the metabolism of oxygen, which increases the exercise capacity (strength and endurance) and rapid post-workout recovery. In the sports supplementation, caffeine is used as a stimulant nervous system. It has the thermogenic potential and in combination with other substances (e.g. Polyphenols, both occurring in coffee beans, such as cocoa beans, tea leaves and mate) can effectively participate in the reduction of body fat. It is included in many dietary stimulants (creatine stacks, no-boosters, beverages). It is a component of fat burners. It is also in the form of mono-preparation supplements.
Dosage: 100-600 mg per day. Due to the long release of activity should not be used in the evening, before




Theobromine (3,7-Dimethylxanthine) is a purine alkaloid, poorly soluble in water, present in cocoa beans, as well as the leaves of yerba mate, tea, coffee, cola and peanuts. It is a diuretic, lowers blood pressure and improves brain function (dilates the blood vessels of the brain). Also expands the blood vessels throughout the circulatory system, preventing atherosclerotic changes. Sometimes it is used in slimming diet. Combined with caffeine and polyphenols becomes thermogenic. In the sports supplementation formulations containing theobromine are used diuretics and fat burners. It is a component of thermogenics, pre-workout creatine stacks, as well as nitrogen boosters.

Theobroma cacao extract


Theobroma cacao extract - an extract from cocoa beans grown due to taste (cocoa, chocolate). Extracts of cocoa beans contain theobromine, a purine alkaloid with diversified operation. Theobromine causes the dilation of the cerebral blood vessels, resulting in improved blood circulation, improving its performance through actions nutrients, reduces the possibility of heart attacks and atherosclerosis acting in the coronary vascular system. In combination with polyphenols and caffeine has a thermogenic potential, allowing for an increase in energy expenditure and speed up the reduction of body fat. It has a negligible effect on the stimulation of the nervous system. It is widely used in sports supplementation as part of thermogenics, pre-workout creatine stacks and no-boosters


Cocoa bean


Cocoa seeds come from the cocoa fruit (Theobroma cacao). It is widely used in the food industry – primarily for the production of cocoa powder and cocoa butter, which is used to produce e.g., chocolate. Raw, untreated, cocoa beans are a treasury of valuable nutrients, which is why they were included in the group of the so-called superfoods.

About 50% of the dry mass of cocoa seeds are fats – mainly saturated fatty acids (stearic and palmitic) as well as oleic acid and other acids from the EUFAs. 31% is carbohydrates, with up to 15% being non-digestible fiber.

Cocoa seeds also contain minerals (magnesium, iron, phosphorus, potassium, copper), amino acids (arginine, glutamine, leucine) and two alkaloids (theobromine, caffeine), showing a stimulating effect. In addition, they are extremely rich in polyphenols (catechins, anthocyanins, procyanidins) that have a beneficial effect on the human body. They are credited for the ability to regulate blood pressure, lower cholesterol and stabilize blood sugar.

Cocoa seed extracts are a popular ingredient in health-promoting preparations. They are also commonly used in slimming supplements, sometimes they are also added to pre-workout formulas and mild stimulants.


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