XXL Booster - Mammut Nutrition


20 %

XXL Booster is an effective pre-workout supplement that combines creatine monohydrate, important amino acids, vitamins, and minerals. It contains no caffeine, so you can take it also in the evening. It contains vitamins B6 and B12, which help reduce fatigue. The ingredients list also includes beta-alanine, which has an effect on carnosine production. It can reduce muscle hyperacidity and accumulation of lactic acid, which can thus prolong performance.

In stock

XXL Booster - an effective pre-workout supplement for everyone who wants to get energy boost before exercise and prolong performance

XXL Booster is a pre-workout supplement that is exceptional in its formula. It does not contain any caffeine, so you can take it also in the afternoon and evening. On the contrary, among the ingredients, you will find plenty of substances that have a beneficial effect on the organism. Firstly, it includes creatine monohydrate, as its daily dose of 3 g helps increase performance during short, consecutive bursts of intense exercise. However, you will also find a number of important amino acids in the ingredients list. For example, beta-alanine is involved in the production of carnosine, which acts as a "cleaner" in the muscles. It's because it can reduce muscle hyperacidity and accumulation of lactic acid, which can help reduce fatigue and prolong athletic performance. Moreover, XXL Booster contains l-glutamine, which is a non-essential amino acid, the level of which is reduced especially by demanding training. This nutritional supplement thus can help therefore increase its level.


Among the amino acids contained in the product, you can find l-arginine. It affects the production of nitric oxide, which results in the dilation of blood vessels and the possible greater supply of nutrients and oxygen to the working muscles. Similarly, XXL Booster also contains taurine, which is a common part of energy drinks. Not only all strength-training athletes will enjoy the content of BCAA, branched-chain amino acids. Specifically, BCAA include l-valine, l-leucine, and l-isoleucine. Our body cannot create them on its own, so we have to supply them regularly. They play an important role in the body, as they are involved in the protein synthesis important for the maintenance and growth of muscle mass.


What's more, the product contains important vitamins. Namely, it includes a complete B vitamin complex. Out of these, vitamins B1, B2 and B3 contribute to the optimal functioning of metabolism important for energy production. Moreover, vitamins B6 and B12 help reduce fatigue and tiredness. The product is also enriched with vitamin E and C, which protect cells from oxidative stress. This helps with the proper functioning of the immune and nervous systems during exercise. 


The next part of the XXL Booster ingredients list consists of minerals. Of these, magnesium has the effect of reducing fatigue and tiredness, the proper functioning of the nervous system, and also contributes to normal protein synthesis. Moreover, it contains chromium that has the effect of maintaining normal blood glucose levels, which can ultimately help regulate hunger and appetite. The last mineral contained is zinc. It contributes to the proper metabolism of fatty acids and macronutrients. It also helps with protein synthesis and maintaining normal blood testosterone levels. 


XXL Booster is a comprehensive pre-workout supplement that is popular with strength and endurance athletes. It comes in the form of a well-absorbed powder with an excellent taste and great solubility.


XXL Booster & its benefits

  • complex caffeine-free pre-workout supplement
  • contains creatine monohydrate, amino acids, vitamins, and minerals
  • helps reduce fatigue and tiredness
  • can improve blood circulation and also performance
  • has an effect on the production of carnosine, which reduces muscle acidification
  • helps with proper muscle function
  • helps maintain normal testosterone levels
  • in the form of a readily soluble powder
  • has a great taste



Fructose, dextrose, 7.6 % creatine monohydrate, 5 % L-glutamine, magnesium citrate, 3.3 % L-arginine, 3.3 % beta-alanine, flavouring (contains lactose), acid (citric acid), 2.5 % orange powder (maltodextrin, concentrated orange juice), 1.5 % taurine, 1.5 % passion fruit juice concentrate, maltodextrin, whey protein concentrate, table salt, anti-caking agent (silicon dioxide), acidity regulator (potassium citrate), 0.27 % L-leucine, thickener (gum arabic), 0.13 % L-valine, 0.13 % L-isoleucine, L-ascorbic acid, zinc oxide, nicotinamide, DL-alpha-tocopheryl acetate, calcium D-pantothenate, riboflavin, pyridoxine hydrochloride, thiamine mononitrate, colourant (carotenes), pteroylmonoglutamic acid, chromium chloride, D-biotin, cyanocobalamin.


Recommended use

Mix 15 g (2 scoops) with 200 ml of water and take before exercise.


Nutrition facts

Nutritional values1 serving (15 g)
Carbohydrates 10 g
Creatine monohydrate 1137 mg
   of which creatine 1000 mg
L-glutamine 750 mg
 Beta-alanine 500 mg
L-arginine 500 mg
Taurine 225 mg
L-leucine 40.0 mg
L-isoleucine 20.0 mg
L-valine 20.0 mg
Vitamin E 3.0 mg
Vitamin C 20.0 mg
Vitamin B1 (thiamine) 0.27 mg
Vitamin B2 (riboflavin) 0.35 mg
Niacin 4.0 mg
Vitamin B6 0.35 mg
Vitamin B12 50 µg
Vitamin B12 0.63 µg
Biotin 12.5 µg
Pantothenic acid 1.5 mg
Magnesium 56.3 mg
Zinc 6.0 mg
Chromium 14.6 µg



The product does not serve as a substitute for a varied and varied diet. It is not suitable for pregnant and breastfeeding women. Store in a dry, cool, and out of reach of small children. Read the instructions for use and follow the recommended use before taking it. 

Product detail
Product Options Grid
Product Question