What is a hypotonic sports drink? Hypotonic sports drinks have a lower concentration - or thickness - than your blood. This makes them absorb faster than isotonic (similar concentration) and hypertonic (higher concentration) sports drinks, making them ideal for rehydration. Precision Hydration electrolyte supplements are all hypotonic. 

Which sports drink is right for me? Precision sports hydration drinks come in 3 different formats to suit each athlete's needs. We have all natural, 3% carbohydrate drink mixes in single-serving, waterproof packets; almost zero-calorie effervescent tablets in weight/space efficient tubes and blister-packed salt capsules designed to be swallowed whole with water on the move. 

Hyponatremia is a condition caused by a dilution of your blood sodium levels. It's fairly common in endurance athletes because when we sweat we lose sodium and - over prolonged periods of exercise - replacing enough of what we're losing can be hard. Just drinking plain water or weak sports drinks can further dilute blood sodium levels, so adequate sodium supplmentation is important during longer events like Ironman triathlons or ultramarathons. Symptoms of hyponatremia include nausea, headaches and fatigue.