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Mr Hyde Nitro-X Mr Hyde Nitro-X (version 1) 231g
£ 25.48

Mr Hyde Nitro-X (version 1) 231g

Servings: (version 1) 231g

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  • Advanced pre-workout stack for boosting nitric oxide levels
  • Helps maintain focus and motivation
  • Maximises a muscle pump and vascularity
  • Reduces mental and physical fatigue
  • Boosts ATP production and energy levels
  • Increases muscle strength and endurance
  • Active synergistic ingredients
  • Reduces lactic acid production
  • Regulates cellular pH levels
  • Contains as many as three forms of caffeine

Prosupps Mr Hyde Nitro-X is an advanced pre-workout supplement which increases the body’s physical performance. It boosts nitric oxide production, increases strength and helps maintain adequate levels of focus and motivation during training. The supplement has a high content of caffeine in three different forms and arginine in the patented formula Nitrosigine®.

The formula Strength Matrix comprises:
Beta-Alanine – a dipeptide composed of histidine and alanine which acts in the body as a substrate for carnosine synthesis. Carnosine regulates cellular pH levels by functioning as an acceptor of hydrogen ions (H+) that are formed during increased muscle function.  In addition, it helps maintain optimal pH levels which are necessary for biochemical processes and delay fatigue, associated with H+ build-up in muscles. Owing to that, beta-alanine boosts the endurance of muscles and is critical to their efficient function during high training loads and inhibits the production of lactate, responsible for a “burning” sensation in muscles.

Creatine hydrochloride – is a slightly more stable form of the popular creatine monohydrate, which makes its highly absorbable, even up to 70%. Creatine has strong ergogenic properties because it is used for the resynthesis of adenosine triphosphate (ATP) after its conversion into phosphocreatine. ATP is a high-energy chemical compound which provides energy for many processes in the body, including skeletal muscle contractions. Creatine supplementation is effective in increasing muscle strength and endurance and promotes muscle growth. By boosting energy production, it reduces fatigue and helps you train longer without fatigue.

Nitrosigine® – a patented formula of inositol-stabilised arginine silicate. Since it is highly stable, it has good bioavailability. Arginine is converted in the body into nitric oxide (NO), which is a gaseous hormone relaxing blood vessels and improving blood flow. Efficient blood flow helps supply more oxygen and nutrients to muscles, thereby helping them work longer without fatigue. Arginine reduces energy expenditure of physical activity and stimulates post-workout release of growth hormone (GH), promoting muscle recovery and anabolism. What is more, it leads to enhanced blood supply to muscles, known commonly as a “pump”, which makes your muscles bulky and almost every vein visible on your body due to increased blood flow. Compared to other forms of the amino acid, Nitrosigine® is more effective in boosting levels of nitric oxide and makes it last for up to 6 hours.

L-Citrulline Aspartate – L-citrulline is an amino acid which, like arginine, is involved in the urea cycle responsible for converting toxic ammonia into urea and excreting it from the body. Taking L-citrulline increases NO levels much more than arginine alone because it is converted by asparagine into arginine and is not deactivated by digestive enzymes. L-Citrulline effectively reduces fatigue and muscle damage, thereby enhancing the body’s physical performance. In addition, it promotes vasodilation, muscle energy production and muscle glycogen resynthesis.

Caffeine Matrix – a combination of three sources of caffeine:  caffeine anhydrous, malate, and citrate which effectively reduce fatigue and increase energy production in the body.

Caffeine is a purine alkaloid which increases energy levels and helps stay focused by regulating hormone and neurotransmitter levels. Since caffeine resembles molecules of adenosine, it may bind to its receptors and blocks its activity in the central nervous system (CNS). As an inhibitory neurotransmitter, adenosine causes fatigue and reduces intellectual capacity. Furthermore, caffeine boosts levels of adrenaline, noradrenaline and dopamine which raise blood pressure and heart rate, promoting cardiac function. As a result, it increases strength, endurance and duration of physical activity without getting tired. In addition, it stimulates the release of fatty acids from adipocytes and promotes their utilisation as a fuel and increases metabolic rate and oxygen use by the body.

Intensity Matrix comprises:
Choline bitartratecholine is required for the synthesis of acetylcholine (ACh) – one of the most important neurotransmitters in the body. ACh is responsible for cognitive abilities, helps stay focused and contributes to improving memory. In addition, it binds to nicotinic receptors and thus facilitates the contraction of muscle fibres and is critical to their strength.

L-Theanine is a psychoactive amino acid found in green tea leaves. It has similar chemical structure to glutamine and that is why it can bind to GABA receptors and reduce anxiety and stress It has synergistic effects with caffeine andd thus helps maintain focus and motivation. It stimulates endothelial nitric oxide production and improves cerebral blood flow. It has antioxidant potential, protects blood vessels from damage and reduces negative effects of caffeine overdose.

N-Acetyl-L-Tyrosine (NALT) – an acetylated form of L-tyrosine which effectively crosses the blood-brain barrier and has major effects on the nervous system. It is necessary for the synthesis of dopamine, adrenaline and noradrenaline. Catecholamines helps maintain high levels of motivation, focus and motor coordination. NALT reduces anxiety in stressful situations and prevents catecholamine depletion when you are under chronic stress or take too much stimulants.

Niacin (otherwise known as vitamin B3) – is a substrate for the production of nicotinamide adenine dinucletodide (NADH), involved in many enzymatic reactions in the body. As an acceptor of electrons and protons, it takes part in cellular respiration and ATP production and is critical to normal function of muscles and boosts their efficiency.

To sum up, Prosupps Mr Hyde Nitro-X is a multi-ingredient pre-workout stack which helps you increase the body’s performance during physical activity. Synergistic ingredients with proven efficacy will increase muscle strength and endurance. Enhanced nitric oxide production promotes vascularity and muscle pump during training and after finishing your workout due to the patented formula Nitrosigine®. The formulation helps also maintain focus and concentration levels and reduces anxiety after caffeine intake.

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Container size: 231 gServing size: 7.7 g (one scoop)Servings per container: 30
per portion (7.7 g)amount%DV
Niacin25 mg156%
Strength Matrix:4.5 g
Beta-Alanine2.5 g*
Creatine HCl1 g*
Arginine Silicate (Nitrosigine®)500 mg*
L-Citrulline Aspartate500 mg*
Caffeine Matrix:410 mg
Caffeine Anhydrous300 mg*
Di-Caffeine Malate90 mg*
Caffeine Citric Acid Blend:20 mg*
- Citric Acid-*
- Caffeine Anhydrous-*
Intensity Matrix:600 mg
Choline Bitartrate500 mg*
Theanine50 mg*
N-Acetyl Tyrosine50 mg*

Other ingrednients

Natural and Artificial Flavors, Soluble Dietary Fiber, Citric Acid, Sucralose, Calcium Silicate, Silicon Dioxide, Malic Acid, Tartaric Acid, Acesulfame Potassium, Red #40.

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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.





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.




Creatine (β-methylguanidoacetic acid) is an endogenous substance, synthesized from the acids present in liver and kidney (L-arginine, L-glycine and L-methionine) and consumption of meat. Its action ensures an adenosine triphosphate (ATP) level, which is an energy carrier, increases the hydration of cells and muscle glycogen stores. In the sports supplementation creatine is stored in the muscles, which improves energy management, exercise capacity and quick recovery and muscle growth. It has the ergogenic, anabolic and anti-catabolic potential.
Creatine is one of the high-performance
substances used in competitive sports, with a reputation confirmed by scientific research. In the form of mono-preparation supplements such as creatine ester, creatine malate, creatine monohydrate, and the multi-component supplements (both various forms of creatine, as well as other substances, precursors of nitric oxide, the BCAA type amino acids). Supplements containing creatine available for purchase at
Dosage: depending on the form of preparation, the type of exercise and weight, normally one of the following models
of creatine dosage is used:
- cyclic
supplementation: 5 - 10g per day in 1 - 3 portions a day, 2 - 5 g per dose. Cycle time approx. 4 - 12 weeks
- cyclic
supplementation with saturated phase: first 5 - 7 days 20 - 30g per day on Day 4 - 6 doses 4 - 6g per serving, then the maintenance phase 2 - 10g per day in divided doses. Cycle time approx. 4 - 8 weeks
- constant
supplementation: 0.03 - 0.05 g per kg body weight for an extended period of time.


Nitrosigine (inositol arginine silicate)


Nitrosigine (inositol arginine silicate) – an advanced form of the popular amino acid supplemented to get muscle pump. Even though it shows similar effects, it stands out for its potency and duration of action.

Nitrosigine belongs to supplements referred to as the body’s nitric oxide boosters. NO helps widen the lumen of blood vessels and thus promotes blood flow in the human body. This leads to increased blood supply to peripheral tissues (mainly skeletal muscles during training), resulting in the so-called muscle pump. This helps maintain high training performance due to enhanced transport of energy substances. NO promotes also post-workout recovery.

Inositol arginine silicate features high potency. It goes hand in hand with the duration of action of the supplement in the body. Its effects are noticeable just 15 minutes after oral delivery and last even for 6 hours. This maximises its efficacy.



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



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


Caffeine malate


Caffeine malate – a combination of caffeine and malic acid which is thus easily absorbed by the body. It is an organic compound which is likely to stimulate human mental activity and has strong energising properties and that is why it is extremely popular among athletes.

Caffeine regulates and maintains healthy blood sugar levels and reduces the incidence of hypoglycaemia. It increases intestinal sugar absorption and can even reduce the demand for glycogen accumulated in muscles, which may contribute to an increase in the body’s endurance.

This compound inhibits the activity of adenosine which calms and relaxes the body. It promotes adrenaline secretion and stimulates the activity of the whole central nervous system.

Caffeine speeds up the release of fats which may also help increase endurance in athletes as a new available source of energy. It contributes to an increase in focus and delays a feeling of fatigue after physical activity.

Citric acid


Citric acid (citric acid, E330) is a ingredient of almost every plant and animal cells, widely used in the food industry as an acidity regulator, emulsifier and stabilizer in order to prevent oxidation and preventing discolouration of the product. In the life processes it takes an active part in the Krebs cycle, a negative phosphofructokinase catalyst, enzyme accelerating the rate of glycolysis. In the sports supplementation used in conjunction with creatine. Preparations available at

Choline Bitartrate


Choline bitartrate a combination of one molecule of tartaric acid and choline, and in this embodiment is a precursor of acetylcholine (neurotransmitter). The human body is able to intracellular synthesis of choline, using the amino acid and vitamin B12. Because of the possibility of shortages of the above mentioned substances, it is necessary to supplement them with supplementation. Choline is a component of lecithin, which is the building substance of cells conditioning the proper functioning of the nervous system, and sphingomyelin, acting as an insulator of nerve tissue. Bitartrate affects the course of fat metabolism. In the sports supplementation of choline, bitartrate is used in the stimulating supplements,, affecting concentration and programs of weight control (fat reduction).
Dosage: 1-3 grams per day.




L-theanine is an amino acid, not building proteins, occurring naturally in the dried green tea leaves, absorbed from the gastrointestinal tract, overcomes easily blood-brain barrier, affecting the nervous system and the relation between neurotransmitters (e.g.dDopamine, serotonin, gamma-aminobutyric acid), with a relaxing effect and increases the psycho-physical capacity, (concentration, memory, alertness). Recommended for use for people burdened with considerable physical effort, athletes of sport disciplines that require concentration and memory, also for students in the period before exams. Available in the form of mono-preparations and multi-component relaxing and post-workout anti-stress supplements..
Dosage: customarily used in supplementation 50-200mg 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.


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