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Review Of Grenade Carb Killa Bars – What’s All The Hype About?

Review Of Grenade Carb Killa Bars |  LEP Fitness

In this article i’m going to share a review of Grenade Carb Killa bars. I’ll be answering popular questions about the protein bar that everybody’s talking about!

I’ll give you my own honest opinion and cover the following…

  • What are Carb Killa bars?
  • Do they work?
  • Are they healthy? 
  • Do they taste good? 
  • How much do they cost?
  • Different Flavours
  • When to eat them

And much more!

Disclaimer: this article is not an endorsement for Grenade Carb Killas. I’m not being paid for this post (although I wish I was!) it’s literally just my own thoughts/personal opinion(s).

What Are Carb Killa Bars?

What Are Carb Killa Bars | LEP Fitness

Carb Killas are a protein bar designed by the company Grenade. They taste just like a chocolate bar, but instead contain much more protein (20g+) and have far less sugar (2g). As of writing this article there are 13 different flavours, ranging from white chocolate, caramel, chocolate fudge brownie and birthday cake! We will look at more flavours shortly.

Do they work? 

In short…

Yes, they work. 

Protein bars are like protein shakes, basically a good way to top up protein intake for the day. This makes them a good food source for people like bodybuilders (who typically require 200g+ of protein per day), and athletes that require strength, and muscle – sprinters, rugby players, powerlifters, ice hockey players, etc.

They can also be consumed by the everyday person who’s looking to build muscle or by the person who’s just generally wanting to increase their daily protein intake.

Are they healthy?

Yes, and No. Protein shakes and protein bars should only make up a small percentage of your overall diet. They can still be used, as long as you don’t over do them, but they should never replace real food. For example the nutrients you get from high protein foods, such as: chicken, salmon, steak, and eggs are more beneficial to the body than artificial products like protein bars.

One benefit carb killas have is their high fibre content, as they contain around 5-7g of fibre per bar – read more about why we need fibre to improve health. The government recommends adults to consume 30g of fibre per day, meaning that consuming just one Grenade Carb Killa protein bar per day could see you hit around 15-20% of your daily fibre target.

Alongside carb killa bars you can also get your fibre from foods such as bread, nuts, dark chocolate, and vegetables. I’d recommend Buy Wholefoods Online where you can order high fibre foods straight to your door. These high-quality fibre foods will aid your digestion and help loosen up your bowels – both of which are ideal for health, weight loss and vitality.

Grenade Bar Vs Regular Chocolate Bar

On a more controversial note, Grenade bars are still fairly high in calories. Of course, they can fit neatly into a persons diet, but just because they are high in protein, and low in carbs does not mean they are low in calories…

The calories differ depending on the favour of the Grenade Bar, for example, the Carmel Chaos flavour contains 214 cals per bar, whereas the white chocolate salted peanut butter flavour contains 242 cals per bar! To put things in perspective… an average Snickers bar contains 229 calories, and a Kit Kat Chunky contains 226 calories. In other words there’s not much difference in calories compared to a regular chocolate bar, in fact they’re almost identical in calories.

That said the quality of calories in a Greande Carb Killa are better i.e. more protein, less sugar, and less fat… compared to a normal chocolate bar which contains very little protein, lots of sugar and high fat. 

What Do They Taste Like?  

Incredible. They taste delicious and i’ve tried every single flavour, I prefer some more than others with the white chocolate salted peanut butter one’s being my favourite, I also like: Jaffa Quake, cookies and cream, and fudge brownie – they all taste delicious, just like a chocolate bar (if not better). 

How Much Do Grenade Carb Killa Bars Cost?

If you go on the Grenade website you pay £2.49 for a single bar, or you can buy 12 for £29.88 (still £2.49 per bar!). They’re not cheap. That said you can also buy from a supermarket, and they’re usually anything from £2 to £2.50 – my local supermarket has had them on offer for the last month at £2 – so actually cheaper than buying from Grenade directly. 

The best option however… is to buy in bulk on Amazon, for example you can buy 12 caramel chaos flavour carb killas for £18.90 (£1.56 per bar) – making it a much cheaper option. You can also get a monthly subscription and save yourself even more. My advice would be to buy a single carb killa protein bar first – to see if you like them, and then if you do…buy them in bulk for the month.  

Different Flavours…

carb killa protein bar review by LEP Fitness

There are plenty of Carb Killa flavours to choose from:

  • Banana Armour 
  • Birthday Cake
  • Caramel Chaos
  • Choc Chip Cookie Dough 
  • Chocolate Crunch
  • Chocolate Mint 
  • Cookies & Cream
  • Dark Chocolate Raspberry 
  • Fudge Brownie 
  • Jaffa Quake 
  • Peanut Nutter (no typo lol! they’re actually called ‘peanut nutter’)
  • White Chocolate Mocha 
  • White Chocolate Salted Peanut 

When to eat a Carb Killa protein bar? 

You could have a Carb Killa protein bar at any time of the day, for example I sometimes have one for breakfast, or as a snack in the afternoon, when I fancy something sweet. You could also have one as a post-workout snack, after a gym session to help your muscles repair.


All in all I’d say that they are a good investment. Not only do they satisfy my taste buds and fill me up, but they also help me to hit my protein target for the day, which therefore helps me to get stronger in the gym. 

Like most things, as long as you don’t over consume them…Carb Killas can fit neatly into your diet. Make-sure that the majority of your diet is made of wholesome foods, for example: meat, fish, veg, fruit. If 80% of your diet is made up of foods like this, and the other 20% is made up of protein shake(s), protein bars, and other foods…then you’ll be fine!

Question time…

Have you tried a Carb Killa Protein bar – and if so what’s your favourite flavour? comment below…

Thanks for reading,

LEP Fitness | personal trainer in Sheffield

Nick 🙂