Our Isotonic is a sports replenishment drink with added amino acids: 2:1:1 carbohydrate blend (Dextrose:Maltodextrin:Fructose) with added Branched-Chain Amino Acids (BCAAs) and L-Glutamine. Contains minerals from easily absorbed sources. Certified anti-doping by Informed-Sport. Incredible taste and digestibility. Suitable for vegans and allergen-free. Our Isotonic (Isodrink & Energy) is a high-quality powdered sports drink with a premium composition that provides all the necessary ingredients not only to maintain but to improve performance in your training and competitions.

It has been shown that fluid replacement, along with carbohydrate and electrolyte (mineral salt) replacement, during exercise can prevent dehydration and thus delay fatigue, resulting in improved performance (Wagenmakers, AJ, et al. JAP. 1993). Simply drinking water to replace lost fluids is insufficient, as it can dilute blood plasma and consequently decrease osmolality and electrolyte levels, producing the opposite effect to that desired.

Similarly, using a beverage with a high concentration of minerals is also ineffective, as it produces the opposite effect: an increase in plasma osmolality. Consequently, the sweating rate is reduced, and therefore, the thermoregulation capacity is diminished, meaning our body temperature rises (Gregor, RJ et al., Oxford: Blackwell Science; 2000). This not only reduces performance but also puts our health at risk. Isotonic drinks (Isodrink & Energy) contain an ideal matrix of three carbohydrate sources: dextrose, maltodextrin, and fructose, in a 2:1:1 ratio.

It has been shown that during prolonged exercise (1.5 hours or more), the use of carbohydrates absorbed by different transport systems (known as GLUTs) facilitates gastric emptying and fluid absorption. Furthermore, it is the only way to increase the rate of assimilation and oxidation of exogenous carbohydrates above 60 g/hour (Currell, K. et al., MSSE. 2008; Earnest, CP et al., JSCR. 2004). Also, something that few people know and/or many forget, is that the consumption of exogenous carbohydrates during physical activity minimizes the immunosuppressive effects of intense exercise (Nieman, DC et al., EIR. 1998).

Minerals, more commonly known as electrolytes or salts, in addition to the benefits already mentioned, also improve the antidiuretic effect. Therefore, less fluid is eliminated by the kidneys, resulting in improved hydration (Coso, JD et al., APNM. 2008). The most important is sodium (Na), because it is the mineral we lose most through sweat and is essential for maintaining hydration during physical activity (NDA Panel. EFSA Journal. 2011). It also provides potassium (K) in appropriate proportions and in a highly absorbable form: potassium citrate.

As it is a very technical and advanced formula that is suitable for both beginners and the most experienced, we have incorporated Branched-Chain Amino Acids (BCAAs) and Glutamine, because it has been shown that the intake of these amino acids along with carbohydrates during training decreases markers of muscle damage (Valentine, RJ et al., IJSNEM. 2008).

Branched-chain amino acids (BCAAs), especially leucine, are also highly oxidized by muscle, meaning they are used as an energy source, decreasing glycogen utilization in favor of fat. Furthermore, the intake of these amino acids during exercise reduces Central Fatigue Syndrome (CFS), that is, it reduces the brain's production of serotonin (a neurotransmitter related to symptoms of tiredness and mood) (Kerksick, CM et al., JISSN. 2018). Additionally, glutamine intake has been shown to reduce gastrointestinal discomfort during exercise due to improved intestinal permeability. In summary and conclusion, according to science, we can affirm that athletes should consume carbohydrate and electrolyte solutions to maintain blood glucose levels, prevent dehydration, and reduce immunosuppressive effects during intense physical activity (Kerksick, CM et al., JISSN. 2018).

And let's not forget that Isodrink & Energy is 100% safe, having anti-doping certification from Informed-Sport (Lemon and Red Fruit flavors).