IONTMAX
Hydration Drink HD 500 20 g

IONTMAX Hydration Drink HD 500 is a hypotonic electrolyte drink powder designed for effective fluid and electrolyte replenishment during physical activity. Each serving (20 g / 500 ml) contains a complex of 4 electrolytes – sodium (250 mg), potassium, magnesium, and calcium – supplemented with vitamin C. With an osmolality of approximately 147 mOsm/kg, it supports rapid water absorption. It contains no artificial flavourings or sweeteners and is suitable for vegans, gluten-free, and lactose-free. Recommended for runners, cyclists, triathletes, and hikers.

Preparation is simple: mix 1 scoop or 1 sachet (20 g) in 500 ml of water and consume as needed before, during, or after physical activity. We do not recommend exceeding this dose – a higher concentration would alter the drink's osmolality and reduce the rate of water absorption. The 800 g pack contains a total of 40 servings, which at one serving per day provides enough for nearly 6 weeks of regular training.

IONTMAX HD 500 is designed for hydration before, during, and after physical activity. It provides the greatest benefit during prolonged exercise, increased sweating, or in hot weather, when the body loses large amounts of electrolytes. Its hypotonic composition (osmolality ~147 mOsm/kg) ensures rapid absorption, making it particularly effective directly during training or racing. It is recommended to drink continuously in small sips throughout the activity.

A hypotonic drink has a lower concentration of dissolved particles than bodily fluids. IONTMAX HD 500 has an osmolality of ~147 mOsm/kg, which is significantly lower than blood plasma (~285–295 mOsm/kg). Consequently, water is absorbed from the digestive tract faster than with isotonic drinks (~270–330 mOsm/kg). This makes it an ideal choice for long endurance efforts where rapid hydration is the priority, rather than primary energy replenishment.

One serving (20 g / 500 ml) contains 250 mg of sodium, which is the most critical electrolyte lost through sweat. The formula is rounded out with potassium (from potassium chloride), magnesium (from magnesium carbonate), and calcium (from calcium lactate). Magnesium contributes to normal muscle function and helps reduce tiredness, while calcium supports muscle function. Total salt content per serving is 0.64 g (it does not contain sodium chloride).

Yes, IONTMAX Hydration Drink HD 500 is fully suitable for vegans. It contains no animal-derived ingredients or by-products. In addition to being vegan-friendly, the product is gluten-free, lactose-free, and dairy-free, making it suitable for those with lactose intolerance or coeliac disease. All sources of electrolytes and vitamins are of plant or mineral origin, making it a clean choice for vegan endurance athletes.

IONTMAX HD 500 is free from allergens. The product is gluten-free, lactose-free, and dairy-free. The manufacturer declares that it does not contain allergenic substances according to current European standards. It is therefore suitable for people with coeliac disease, lactose intolerance, and those avoiding dairy products. Its natural composition without artificial additives also makes it a safe choice for individuals with increased sensitivity to synthetic additives.

One serving (20 g) contains 70 kcal and 17 g of carbohydrates, all of which are in the form of sugars (sucrose). In the prepared drink (500 ml), this represents approximately 3% carbohydrates, keeping the drink hypotonic. It contains no fat or protein. The energy content comes exclusively from sucrose, which, along with the electrolytes, supports water absorption and provides a readily available energy source during physical activity.

Yes, IONTMAX HD 500 is specifically designed to replace plain water during prolonged physical activity – running, cycling, triathlon, or hiking. With intense sweating, water alone is insufficient because it does not replenish electrolytes, particularly sodium, the loss of which can lead to hyponatraemia. The hypotonic formulation with 250 mg of sodium per serving ensures rapid fluid absorption and maintains electrolyte balance, which is crucial during long-term performance.

Standard supermarket isotonic drinks are usually isotonic or hypertonic and contain artificial flavourings, artificial sweeteners (e.g., aspartame, acesulfame K), and food colourings. IONTMAX HD 500 is hypotonic (osmolality ~147 mOsm/kg) with a natural composition and no artificial additives, ensuring fluids are absorbed more rapidly. Furthermore, the powder form reduces the price per serving and decreases plastic waste compared to bottled drinks.

IONTMAX HD 500 is well tolerated when used as directed (20 g / 500 ml water). The hypotonic osmolality of ~147 mOsm/kg does not cause the digestive distress typical of hypertonic or overly sweet drinks. The product contains no caffeine, artificial sweeteners, or preservatives. Excessive consumption of multiple servings in quick succession may lead to mineral imbalances, so it is advisable to follow the recommended dosage and not exceed it without justification.

IONTMAX HD 500 can be combined with energy gels during prolonged performances lasting longer than 90 minutes, such as marathons, ultramarathons, or long cycling rides. In such cases, we recommend washing down the gel with plain water or a drink without extra sugar to avoid increasing the total carbohydrate concentration in the digestive tract, which would alter the hypotonic nature of the drink. Consult a specialist before combining with other electrolyte supplements to avoid excessive sodium intake.