SiS
Hydro 20 Tablets

SiS Hydro are effervescent electrolyte tablets designed for rapid rehydration and the replenishment of minerals lost through sweat. Each tablet contains 345 mg sodium, 65 mg potassium, 102 mg calcium and 8.1 mg magnesium. Simply dissolve one tablet in 500 ml of water to create a low-calorie electrolyte drink with just 9 kcal and no added sugar. They are suitable for running, cycling, hiking and everyday fluid replenishment.

You can take SiS Hydro before training, during physical activity and after exercise. Before training, they help optimise hydration; during exercise, they replenish electrolytes lost through sweat; and after training, they accelerate rehydration. The manufacturer recommends dissolving 1 tablet in 500 ml of water and consuming the prepared drink within 24 hours. The maximum daily dose is 4 tablets.

Preparation is very straightforward – simply drop 1 SiS Hydro tablet into 500 ml of water and wait for it to dissolve completely. The effervescent reaction takes just a few seconds. The prepared drink should be consumed within 24 hours. It is not recommended to use the tablet with a smaller volume of water, as this is important to maintain the correct electrolyte concentration.

Plain water does not replenish the electrolytes the body loses through sweat – particularly sodium. Even mild dehydration of 2–3% of body weight can reduce both physical and mental performance. SiS Hydro contains 345 mg of sodium per tablet, which is the key electrolyte for maintaining fluid balance. Plain water can even disrupt osmotic balance, whilst an electrolyte drink significantly accelerates rehydration.

SiS Hydro contains no added sugar – sucralose is used as the sweetener. The carbohydrate content is 0.7 g per tablet, with 0 g sugars. The energy value per serving is just 9 kcal, making it an ideal choice for athletes monitoring their caloric intake or those who want rehydration without unnecessary energy consumption.

Based on its ingredients, SiS Hydro contains no ingredients of animal origin – the tablets are composed of mineral salts, citric acid, inulin, green tea extract, B vitamins and natural colouring from beetroot. The product also contains no declared allergens. For definitive confirmation of vegan status, we recommend checking directly with the manufacturer.

According to the manufacturer, SiS Hydro contains no allergens. The ingredients include no gluten, lactose, soya protein or nuts. The product is therefore suitable for people with common food allergies. If you have a specific sensitivity, we recommend checking the current product label, as manufacturers may update their formulations.

SiS Hydro stands out primarily because it contains no sugar and has just 9 kcal per serving, whereas classic isotonic drinks such as Powerade or Isostar contain 20–30 g of carbohydrates per 500 ml and also serve as an energy source. SiS Hydro is a purely electrolyte drink with no carbohydrates, ideal when you need rehydration without caloric intake. It is also more practical – the tablets are lightweight and convenient to carry.

SiS Hydro is a carbohydrate-free electrolyte drink (0 g sugars, 9 kcal), designed purely for rehydration. SiS Go Electrolyte, on the other hand, contains carbohydrates and also serves as an energy source during long endurance efforts. SiS Hydro is therefore the better choice for shorter training sessions, everyday hydration, or when you don't want to consume extra calories – Go Electrolyte is more suitable for long efforts lasting over 60–90 minutes.

Yes, SiS Hydro contains a complex of electrolytes including magnesium and potassium, which play an important role in normal muscle function. Magnesium contributes to a reduction in tiredness and normal electrolyte balance. Muscle cramps during exercise are often associated with dehydration and electrolyte loss – regularly replenishing minerals with SiS Hydro may help reduce this risk.

Each pack contains 20 tablets. At the recommended serving of 1 tablet per 500 ml of water and a maximum intake of 4 tablets per day, the pack will last a minimum of 5 days with intensive use, or 20 days at 1 tablet per day. For a typical recreational athlete training 4–5 times per week and using 1–2 tablets per session, a pack will last approximately 2–3 weeks.

Yes, SiS Hydro is a purely electrolyte drink with no stimulants, sugar or macronutrients, so it is compatible with most dietary supplements including protein, BCAAs or creatine. However, we recommend preparing it separately in 500 ml of water as instructed, rather than mixing it with other supplements in the same drink, to avoid any potential taste or chemical interactions.

Yes, SiS Hydro is also suitable for everyday electrolyte replenishment outside of training – for example, in hot weather, when travelling, during illness with a fever, or when sweating excessively. Its low-calorie formula (9 kcal) and absence of sugar make it suitable for a wide range of people. For everyday use, observe the limit of 4 tablets per day and ideally consult a healthcare professional if you are taking medication or have any underlying health conditions.