SiS Performance Nitrate Bar - 50g

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Product Overview

About the SiS Performance Nitrate Bar

Performance Nitrate Bar is carbohydrate energy bar delivering 30g carbohydrates and 250mg nitrates, sourced from a combination of Rhubarb Juice Concentrate and Amaranthus Leaf Extract. This unique source of nitrates provides a superior taste profile compared to anything else on the market. The carbohydrate + nitrate intra bar can be used as part of your loading strategy or taken 60-90 minutes into endurance exercise to provide energy, maintain elevated levels of blood nitrate and reduce the oxygen cost of exercise.

Key Features

  • • 30g Carbohydrate per bar
  • • 250mg Nitrates
  • • Nitrates sourced from Rhubarb Juice Concentrate and Amaranthus Leaf Extract
  • • Use during exercise
  • • Reduced oxygen cost of exercise
  • • Improved exercise efficiency
  • • Informed Sport tested
Suggested Use

The determinants of performance in endurance sports can be categorised as:

  • Maximal oxygen uptake (VO2 max¬)
  • Lactate threshold (the point at which blood lactate increases above baseline levels)
  • Efficiency or economy (the oxygen required to produce a given running speed or cycling power output)

In populations with similar performance characteristics (VO2 max and lactate threshold), efficiency is a better predictor of performance. Essentially, those who can expand less energy and use less oxygen at higher workloads are likely to perform better.

Supplementing with sport nutrition products rich in nitrates can have a direct impact on efficiency and as a result improve performance.

For further information about the Science behind Performance Nitrates check out our article

Informed Sport Registered

Our complete product range is developed using a world-class approach to banned substance testing, providing assurance for athletes. For more information on Informed Sport & our unique world class approach, click here.

Directions For Use

Consume 1 Performance Nitrate Bar 60-90 minutes into endurance exercise.

Alternatively, Performance Nitrate Bars can be used to meet a nitrate loading protocol in the 1-3 days prior to an endurance event, consuming 1g total nitrates per day on these days.


Store in a cool, dry place out of direct sunlight. Food Supplements should not be used as a substitute for a balanced diet.

Nutritional Information
Suitable For
Nutrition Stats

Nutritional content below is for the Strawberry Bar Flavour>/p>

Typical ValuesPer 100gPer Serving 50g
Energy 1283kJ / 303kcal 642kJ / 151kcal
of which saturates0.4g0.2g
of which sugars44g22g
Dietary nitrates 250mg

* Reference intake of an average adult (8400 kJ/2000 kcal)

Reviews (6 Reviews)
Showing 6 of 6 reviews

full of flavour and good in price.



Verry good



5 Star Benefit of the doubt - Not tried yet, but don't see any reason not to be happy with the product if it aligns with other SIS product quality.



Good taste



Unfortunately not my taste. Didnt feel very nice in my mouth!

Not afraid of 13!


I got some of these to try them. They taste grate so definitely buy again

James Aldridge