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At Science in Sport, we’re committed to research, testing, and certification. By working with the elite athlete community, we create performance-driven products that meet your nutritional needs and support your training goals. 


Our best-selling products are widely trusted across the globe, helping ambitious athletes from a wide range of disciplines to take their training to the next level. Through our world-leading and relentless research, we formulate products that will truly impact your performance. Discover the benefits of SiS today with our best-selling products.

 

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16 Products

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Product Category
  1. Hydration (4)
  2. Energy (5)
  3. Bundles (2)
  4. Recovery (4)
  5. Vitamins-Minerals (2)
  6. Accessories (2)
Type of Product
  1. Bars (5)
  2. Bottles (2)
  3. Bundles (2)
  4. Gels (4)
  5. Powders (3)
  6. Tablets (6)
Flavour
  1. Chocolate (1)
  2. Cookies and Cream (1)
  3. Dark Chocolate Raspberry (1)
  4. Double Espresso (1)
  5. Lemon (2)
  6. Lemon and Lime (1)
  7. Mixed (2)
  8. Orange (4)
  9. Pineapple and Mango (1)
  10. Pink Grapefruit (1)
  11. Red Berry (1)
  12. Salted Caramel (2)
  13. Strawberry (2)
  14. Strawberry and Lime (1)
  15. Unflavoured (1)
  16. Various (1)
  17. Vanilla Fudge (2)
  18. Peanut Butter & Jelly (2)
  19. Milk Chocolate Peanut Butter (1)
  20. White Choc Fudge (1)
Caffeine
  1. Caffeine Free (11)
  2. Contains Caffeine (1)
When to Take
  1. Pre-workout (0)
  2. Post-workout (0)
  3. Intra-workout (0)
Price
  1. Protein Bars
    Protein Bars
    4 Flavours
    Subscribe: Up to 25% off
    From £28.04 From £32.99
    Save 15%
  2. Beta Fuel Bundle
    Beta Fuel Bundle
    £60.05 Was £70.65
    Save 15%
  3. REGO Bundle
    Recovery Protein Bundle
    £45.04 Was £52.99
    Save 15%
  4. REGO Rapid Recovery Strawberry - 500g
    REGO Rapid Recovery Strawberry - 500g
    Save 15%
    Special Price £16.99 Was £19.99
  5. PROTEIN20 Bar - 12 pack
    PROTEIN20 Bar - 12 pack
    3 Flavours
    Subscribe: Up to 25% off
    From £28.04 From £32.99
    Save 15%
  6. SIS Mixed Isotonic 20 Gel Pack
    Mixed GO Isotonic Energy Gels - 20 Pack
    Subscribe: Up to 25% off
    Save 15%
    Special Price £26.78 Was £31.50
  7. SiS Immune - 8 Pack (Orange)
    SiS Immune - 8 Pack (Orange)
    Save 15%
    Special Price £51.00 Was £60.00
  8. BETA ALANINE
    Beta Alanine - 90 Tablets
    Save 15%
    Special Price £12.74 Was £14.99
  9. Go Hydro (Pink Grapefruit)
    Go Hydro (Pink Grapefruit)
    Save 15%
    Special Price £6.38 Was £7.50
  10. GO Isotonic Energy Gel Variety - 7 Pack
    GO Isotonic Energy Gel Variety - 7 Pack
    Save 15%
    Special Price £10.63 Was £12.50
  11. 800ml SiS Pro Yellow Cycling Bottle
    Pro Yellow Bottle - 800ml
    Save 15%
    Special Price £4.25 Was £5.00
  12. GO Hydro x 3 (Lemon)
    GO Hydro x 3 (Lemon)
    Save 15%
    Special Price £18.70 Was £22.00
  13. Immune Tablets - Orange
    Immune Tablets - Orange
    Save 15%
    Special Price £6.80 Was £8.00
  14. Beta Fuel Energy Chew
    Beta Fuel Energy Chew
    5 Flavours
    Subscribe: Up to 25% off
    From £1.87 From £2.20
    Save 15%
  15. Go Hydro (Pineapple & Mango)
    Go Hydro (Pineapple & Mango)
    Save 15%
    Special Price £6.38 Was £7.50
  16. GO Energy + Caffeine Gel - 30 Pack - Double Espresso
    GO Energy + Caffeine Gel - 30 Pack - Double Espresso
    Subscribe: Up to 25% off
    Save 40%
    Special Price £33.60 Was £56.00
16 33 48 View All

16 Products

Premier Delivery Just £9.99 For A Year Of Next Day Delivery!