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Pink grapefruit strikes a balance between tart and slightly sweet, and in a cold glass, that works well during exercise. SiS Hydro Tablets Pink Grapefruit contain the standard mineral formula with 345 mg of sodium, supplemented with green tea extract and a red colouring based on beetroot. Free from sugar, suitable for vegans and certified by Informed Sport. Each tablet weighs 4.5 grams and dissolves quickly, without leaving any residue in the glass.
Of all the minerals you lose through sweat, sodium is lost in the largest quantities: depending on your body and the conditions, 200 to 2000 milligrams per litre of sweat. How much you sweat depends on intensity, temperature, humidity and how well you are accustomed to heat. Each tablet provides 345 mg of sodium, 65 mg of potassium, 102 mg of calcium and 8.1 mg of magnesium, and dissolves to a sodium concentration of 30 mmol/L in 500 ml of water. That concentration was not chosen at random.
In 2008, the British Olympic sailing team asked SiS for help with their hydration strategy. Sailors sweat a lot, even though that may seem contradictory, and in changing weather and wind conditions, fluid loss is difficult to estimate. SiS formulated a tablet that provides exactly 30 mmol/L of sodium in 500 ml of water. Since then, the formula has remained virtually unchanged. Four minerals in each tablet: sodium, potassium, calcium and magnesium. Not one, not two.
Vitamins B1, B2 and B6 are not leading roles in this product, but they are included. Thiamine (B1) and riboflavin (B2) contribute to normal energy-yielding metabolism, and vitamin B6 contributes to normal protein and glycogen metabolism. The amounts are modest: 0.2 mg of B1, 0.3 mg of B2 and 0.4 mg of B6 per tablet, providing 18%, 21% and 29% of the daily reference intake respectively. Enough to make the claim, and no more than that.
For athletes who want to drink during shorter training sessions without consuming carbohydrates or sugars, and for those who drink more than usual on hot days and are looking for a drink with minerals. The tablet dissolves in 500 ml of water, provides 9 kcal and is suitable for vegans. Each batch is tested by Informed Sport for substances on the WADA banned list, so competitive athletes can also use it without hesitation.
The pink grapefruit variant is one of the most appreciated flavours in the range, especially among cyclists and triathletes who are looking for a slightly more bittersweet character in their bidon during long rides. It is refreshing enough to drink hour after hour without taste fatigue.
30 mmol/L of sodium per 500 ml serving. SiS developed this ratio for the British sailing team at the Olympic Games in Beijing and has kept it virtually unchanged ever since. No marketing figure: that dosage is fixed in the formula.
You lose the most sodium through sweat, but you also lose potassium, calcium, and magnesium. One 4.5-gram tablet provides all four: 345 mg of sodium, 65 mg of potassium, 102 mg of calcium, and 8.1 mg of magnesium.
If you want to drink without consuming carbohydrates, before a short workout, a warm-up, or just between meals, this is perfect for you. For longer exercise, you need separate carbohydrates: the hydrotablet provides minerals, not energy.
Informed Sport checks each batch for prohibited substances. This gives competitive athletes peace of mind. The certificate can be checked for each batch on the SiS website.
* Percentage van de referentie inname volgens Verordening (EU) Nr. 1169/2011.
** Reference intake unknown.
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They dissolve in water to make a drink containing sodium, potassium, calcium, magnesium and chloride, supplemented with vitamins B1, B2 and B6. When you sweat, you lose more than just water: you also lose these minerals. No sugar, virtually no calories.
Three to four hours before exercise, and then another half litre in the hours leading up to it. During shorter workouts where you do not need carbohydrates, drink one dissolved tablet per hour. If you are combining your exercise with carbohydrates, take the hydrotablet separately alongside your energy source.
Sodium is the mineral you lose in the largest quantity through sweat: depending on your body and the conditions, 200 to 2000 mg per liter of sweat. The formula is designed to replenish it, with 345 mg of sodium per tablet in 500 ml of water. We cannot make any claims about the effects of sodium in the body, as the EU has not approved any health claims for it.
For workouts up to 60 to 90 minutes, one tablet per hour is generally sufficient as a supplement to water. For longer or more intense exercise, or in warm conditions where you sweat more, you can use multiple tablets. The upper limit is 4 per day.
Thiamine (B1) and riboflavin (B2) contribute to normal energy-yielding metabolism, and vitamin B6 contributes to normal protein and glycogen metabolism. The amounts are modest: 0.2 mg B1, 0.3 mg B2 and 0.4 mg B6 per tablet, providing 18%, 21% and 29% of the daily reference intake, respectively.
Lemon, strawberry and lime, pink grapefruit, and pineapple and mango all contain green tea extract (2.3%) and are caffeine-free. Berry uses elderberry powder instead of green tea. Cola with caffeine is the only flavor with 75 mg of caffeine per tablet; choose that version consciously, as caffeine sensitivity varies from person to person.
