Push Boundaries in Every Session: Single-serve effervescent tablets deliver a controlled combination of electrolytes and B vitamins, making hydration precise and accessible wherever your sport takes you Build on Proven Science: Developed with elite athlete insight and rigorous research, these tablets offer targeted levels of sodium, potassium, calcium and magnesium to support normal muscle function and electrolyte balance Prepare for : Features vitamin B1 and B2 to contribute to normal energy-yielding metabolism and carbohydrate conversion, and B6 to support protein metabolism during effort Trust in Uncompromising Standards: Each batch is tested for banned substances, ensuring confidence and reliability for athletes determined to advance at every level You can’t Beat the Science: Every SiS product is driven by research, developed with elite athletes, and tested with precision to deliver reliable, evidence-based performance nutrition for athletes at every level