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SiS Performance Nitrate Bar - 6 Pack

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Product Information

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

Product Uses
Recommended Usage

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.


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.

Nutritional Info

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)

For full nutritional and ingredient information please select from the flavours below

Read More
During Exercise
During Exercise
Rapid Recovery

Verified Reviews

Rated 4.9 out of 5 based on 12 Reviews

great product


Loveley taste...will defo be ordering again

John Simms

Great taste

Exiled Yorkie

Great tasty bars. Will be buying more.

Dave "Muttley" Pitchell

Great bars, bought to try new product, certainly kicks in, have since bought apple flavour. Good delivery and good price.


Really nice texture and flavour a lot better than the other energy bars


Great flzvour


Pleasant taste, nice consistency, easier to eat whilst riding than some bars & kind on the stomach

Dave "Muttley" Pitchell

This is the second box of these I've bought, personally I prefer the taste of the Strawberry, hence four stars. But performance they are good.

Neil Mackley

Placebo effect or not these are good

Andrew Bailey



Amazing product!