ENDURANCE HYDRATION STICK

Most exercise cramps come from sodium loss. On average, athletes lose 800–1,000 mg/L of sodium in sweat, but "salty sweaters" can lose well over 2,300 mg/L. Individual rates can vary significantly, often between 0.5 to 2.5 liters per hour. Each Kaiju stick delivers 593 mg, about 10× a typical sports drink, alongside potassium and magnesium. Sipped through long sessions, most heavy & salty sweaters using Kaiju report no more cramping. If they know how to match their losses. Take the 60-second sweat test to see how many sticks you need per hour.

Kaiju is built around magnesium bisglycinate, the most absorbable and gut-friendly form of magnesium. No sucralose, no acidity regulators, artificial sweeteners, no fillers (the ingredients most likely to upset the stomach in hydration drinks). Most Kaiju users report no GI issues, even in heat. New to it? Start with one stick before a long session to test your tolerance.

Most sports drinks use the same low-dose sodium recipe (~100 mg per serving) regardless of who's drinking them. Sweat sodium varies hugely between athletes. Heavy sweaters can lose 4000+ mg per hour. Kaiju is designed around what hard-training endurance athletes actually lose: 593 mg per stick, in around 600ml of water.

Three things. First, the strength. Approximately 10× the sodium and 3× the potassium of a typical sports drink. Second, the science. OSMØ®️ technology mirrors the 3:2 sodium-potassium pump ratio your body actually uses, with magnesium bisglycinate for gut tolerance. Third, what's not in it: no sugar, no sucralose, no artificial flavours, no fillers or binding agents.

Kaiju Electrolytes is built for hydration, not a carb fuel. Your carbs come from elsewhere (gels, bars, real food), so adding sugar here would double-dose. Given the individual variations in carb and electrolyte needs for endurance sport, keeping them separate means you can formulate a plan that works best for you.

Yes. Kaiju works anywhere you're losing fluids and sodium: hot weather, travel, sauna, post-illness rehydration. The main use case is endurance training and racing, but the formula is the same. How often you take it depends on your sweat rate and current hydration levels.

Start with the sweat test to find your sodium loss profile. Mix one stick with 500 ml of cold water and shake. For sessions over 90 minutes, most heavy sweaters drink one bottle before, two per hour, and one after. Shorter sessions, one during is usually enough. Sipping steadily helps with absorption.

Yes. Every batch is independently tested by Informed Sport against the WADA prohibited substances list. Kaiju is safe for athletes subject to anti-doping rules. The Informed Sport certification appears on every pack and on our website.

Iodine, zinc, selenium, and copper are important but not meaningfully lost through sweat. Most people get sufficient amounts from food, and including them risks over-supplementation, particularly for heavy sweaters using multiple sticks per hour, where cumulative intake could quickly exceed safe upper limits. Excess iodine can affect thyroid function; high zinc can interfere with copper absorption. This product focuses on the electrolytes actually depleted during exercise.