A good fit for riders who want caffeinated, low-calorie electrolyte hydration before or during shorter training sessions, with separate fuel added for longer endurance rides.
SIS GO Hydro + Caffeine is an effervescent electrolyte tablet for riders who need hydration without turning every bottle into a carbohydrate drink. Add one tablet to 500 ml of water and let it dissolve to create a low-calorie drink containing sodium, potassium, magnesium and calcium, with a sodium concentration of 30 mmol/L.
The cola version adds 75 mg of caffeine per tablet, making it well suited to a pre-event bottle or training sessions where alertness and focus matter. Caffeine-sensitive customers should consider the timing, particularly for late-day rides. The tablet dissolves quickly in water, and the resulting drink has a light, fizzy consistency rather than the thick sweetness of an energy drink.
This is a hydration product, not a primary fuel source: at just 9 calories and 1.0 g of carbohydrate per tablet, longer rides still require separate carbohydrate planning. Use it 30–45 minutes before intense exercise, during shorter sessions where extra carbohydrate is unnecessary, or alongside your usual on-bike nutrition. The formulation is suitable for vegans and is lactose-, gluten-, wheat-, nut- and soya-free, and it is Informed Sport registered.
75 mg caffeine per tablet
Adds a measured caffeine dose to your bottle to support alertness and focus when training or racing.
30 mmol/L sodium formulation
Provides a sodium-rich hydration option designed to replace key electrolytes lost through sweat.
Only 9 calories
Keeps hydration light when you want electrolytes without a sugary sports drink.
Quick, simple preparation
Drop one tablet into 500 ml of water and let it dissolve—no powder measuring or shaker required.
Useful alongside ride fuel
The very low carbohydrate content leaves room for gels, chews or other planned energy sources on longer rides.
Cola flavour with fizz
A distinctive, lightly carbonated alternative to plain water; the tablet dissolves quickly in testing.
Athlete-conscious formulation
Informed Sport registered, with a vegan, lactose-free, gluten-free, wheat-free, nut-free and soya-free formulation.
General
Nutrition
Ingredients
Use
Features
Certification
HYDRO
Our effervescent hydration format dissolves readily in water to give you a convenient, low-calorie electrolyte drink for everyday hydration and exercise.
30 mmol/L sodium formulation
The drink is formulated around a 30 mmol/L sodium concentration to support hydration more effectively than water alone.
Caffeine hydration formula
Each tablet adds 75 mg of caffeine to help support alertness, focus and physical and mental performance as fatigue develops.
B-vitamin support
Vitamins B1 and B2 contribute to carbohydrate conversion, while vitamin B6 supports protein metabolism.
Informed Sport
Independent batch and random testing provides added assurance for athletes concerned about prohibited substances.
SIS is a sports nutrition brand founded in 1992 and focused on fuelling endurance and high-intensity exercise. It is known for developing practical carbohydrate, hydration and recovery products for athletes.
SIS introduced what it describes as the world's first isotonic energy gel, designed to provide carbohydrate during exercise without requiring additional water. The GO isotonic gel range subsequently received the Queen's Award for Enterprise.
