SIS (SCIENCE IN SPORT) Active Nutrition

Fuel your movement with SIS (Science in Sport) active nutrition, designed to fit around your training, your goals and your everyday life. Whether you’re heading out for a long run, pushing through a tough gym session or keeping your energy steady on busy days, this range is here to help you feel ready to go again.

For a wider choice across all formats and brands, explore our Sports nutrition selection.

What you’ll find in the SIS (Science in Sport) range

The SIS (Science in Sport) collection at Holland & Barrett brings together easy-to-use options for before, during and after exercise. You’ll find:

• Electrolyte tablets – simple, drop-in-your-bottle tablets that dissolve into a lightly flavoured drink, ideal when you want something quick and fuss-free.
• Energy gels – handy single-serve sachets you can carry on the go, so you don’t have to rely on bulky snacks or big bottles mid-session.
• Energy drink mixes – powders you can mix with water to sip steadily, helping you keep topped up across longer efforts.

Each product is designed to fit with your plans, so you can pick what feels most natural for the way you like to move.

Explore more SIS (Science in Sport) options

If you follow a plant-based lifestyle, you can discover the SIS (SCIENCE IN SPORT) Vegan Active Nutrition range. You can also browse the wider SCIENCE IN SPORTS Active Nutrition selection, or explore more plant-based choices with SIS (SCIENCE IN SPORT) Vegan products.