Fast hydration, almost calorie-free Improves performance Physical and mental impulse SiS GO Hydro + Caffeine is based on the scientifically proven formula of SiS GO Hydro, ensuring you are effectively hydrated for performance, while providing 75mg of caffeine per tablet. As an effervescent tablet that dissolves easily in plain water, it is a highly practical approach to ensuring all your electrolyte, fluid and caffeine needs are met in the simplest form. Adding caffeine has been repeatedly shown to improve performance by providing a physical and mental boost exactly when we need it. SiS GO Hydro is a practical strategy to ensure hydration without calories. Not intended for use by persons under 16 years of age.