Nutrition

Gels are the best form of portable energy, being quick to take and fast to act.

Gels are the best form of portable energy, being quick to take and fast to act.

Gels are the best form of portable energy, being quick to take and fast to act.

Gels are the best form of portable energy, being quick to take and fast to act.

Gels are the best form of portable energy, being quick to take and fast to act.

Gels are the best form of portable energy, being quick to take and fast to act.

The new NATURAL ENERGY bar.

The new NATURAL ENERGY bar.

The new NATURAL ENERGY bar.

SIS Active pack. Everything an athlete needs to cover his or her sports drink requirements is here - and giving a saving over buying the products individually.

SIS Beta Alanine is designed to improve anaerobic performance by increasing the intra muscular buffers.

A nutritious snack that is ideal for for the protein needs of power athletes and sports people.

SIS Conjugated Linoleic Acid Isomer capsules - 90 x 1000 mg capsules. A fatty acid found in meat and dairy produce.

SIS Fantastic aid to an athletes immune system.

SIS Creatine supplement - 250 g. A muscle building supplement for athletes.

SIS Energy pack. All the best bits from SiS in a convenient pack, making it easy to try out the most popular products before committing to the larger sizes - and giving a saving over buying the products individually.

SIS Glutamine supplement - 250 g. An amino acid that aids recovery when undertaking heavy training.

SIS Go Electrolyte drink powder blackcurrant 1.6 kg tub. A carbohydrate energy fuel with electrolytes that puts back in what you take out whilst exercising in the heat.

SIS Go Electrolyte drink powder 500 g tub available in a variety of flavours. A carbohydrate energy fuel with electrolytes that puts back in what you take out whilst exercising in the heat.

Go Electrolyte drink powder blackcurrant 40 g sachet - box of 18. A carbohydrate energy fuel with electrolytes that puts back in what you take out whilst exercising in the heat.

SIS Go-Bar apple and blackcurrant 65 g bar - box of 24. A nutritious high energy snack that is ideal for athletes and people with active lifestyles.

SIS Go-Gel 60 ml tubes - box of 30. An isotonic energy gel with a unique formulation that allows athletes to absorb significant carbohydrate without compromising hydration requirements.

SIS Hedstart Hangover recovery drink powder 25 g sachet - box of 3. Reach for Hedstart when you need to sort your head out, repair your liver, and re-hydrate your body.

SIS Nocte night-time recovery drink powder chocolate 1.1kg. The night-time drink for athletes, helping with quality of sleep and effectiveness of recovery.

SIS Nocte night-time recovery drink powder 40 g sachet - box of 15. The night-time drink for athletes, helping with quality of sleep and effectiveness of recovery.

SIS Nocte night-time recovery drink powder vanilla 1.1kg. The night-time drink for athletes, helping with quality of sleep and effectiveness of recovery.

SIS Organic PSP22 Energy drink powder fruit punch 1.4 kg tub. Fully certified and thoroughly developed organic variant of Science in Sport's popular Go Electrolyte drink.

SIS Organic Go Electrolyte drink powder berry burst 1.4 kg tub. Fully certified and thoroughly developed organic variant of Science in Sport's popular Go Electrolyte drink.

SIS Organic Go Electrolyte drink powder berry burst 50g sachet. Fully certified and thoroughly developed organic variant of Science in Sport's popular Go Electrolyte drink.

SIS PSP22 Energy drink powder in a 2.7 kg tub. The ideal choice to give you extra energy during exercise.

SIS PSP22 Energy drink powder 500 g tub. The ideal choice to give you extra energy during exercise.