Maxifuel Viper Boost energy bar review

Energy product with caffeine and guarana

Our rating 
3.0 out of 5 star rating 3.0
GBP £1.99 RRP | USD $3.15
Maxifuel Viper Boost energy bar

Our review

Highly charged bars with a real buzz but expensive and need careful use
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Maxifuel’s Viper Boost puts a varied mix of sucrose, rice flour, ground almonds, starches, fructose and glucose syrups under a relatively thick (14 percent) dark chocolate skin. 

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A relatively low sugar percentage with a high protein and fat content makes it a steady energy delivery bar. Its infamous reputation comes from the caffeine and guarana buzz ingredients for kick-starting workouts or restoring flagging focus in the last gasp of a race. 

Like most stimulant-enriched products, tolerance before queasiness kicks in varies between athletes. Add a crash as noticeable as the boost and you need to check how these bars work for you before racing with them. Very pricey, too.

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This article was originally published in Triathlon Plus magazine, available on Zinio.

Product Specifications

Product

Name Viper Boost energy bar (13)
Brand Maxifuel

Weight (g) 45
Sugars 30.4
Vitamin C 343
Calories 425
Total Carbohydrate 68.5
Protein 7.5
Saturated Fat 3.9