Offer now available for the Impact Whey Protein – MARS®. On sale with world wide delivery. We teamed up with MARS® so you can rediscover the great taste — and pack that taste into one seriously satisfying shake. Each scoop delivers 20g of high-quality whey protein, now with the classic combination of caramel, chocolate and malt flavour you know and love in MARS®.
Underneath the flavour, it’s the same high-quality Impact Whey trusted by millions — crafted by nutritionists and supporting active lifestyles for over 20 years.¹
Informed Choice & Informed Protein: Certified Confidence
Informed Choice is a globally recognised quality assurance programme for sports nutrition. Through voluntary, random testing, it helps ensure products are manufactured to rigorous international standards.
Informed Protein certification goes a step further — independently verifying protein content and amino acid profile. Products are tested across multiple batches, with samples screened for heavy metals, pesticides, and other potential contaminants.
So when you see the Informed Choice and Informed Protein logos on our products, you can be confident they’re regularly tested for quality, purity, and consistency.
Whether you’re hitting your macros or just want something that feels like a treat, this is the protein shake that actually tastes like one.
Creamy milk chocolate flavour comes first, balanced by caramel sweetness and a subtle malty nougat flavour. The finish? Velvety, smooth, and indulgent. Rediscover the great taste of MARS®.. Browse our extensive range of Myprotein products. Found on the safe and secure website myprotein.com.
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Quick take: iHerb makes it easy to browse supplements, protein, wellness products, and healthy pantry staples in one place. It’s a handy option for comparing ingredients, brands, and customer reviews before choosing what suits your goals.
This flavour is amazing, tastes exactly like a Mars bar, also not too thick which can sometimes put me off.
This is my favourite flavour so far, I love these new flavour editions. Please don’t get rid of this one!
A Twix flavour would be nice next…
Rated 5 out of 5
Matt –
I’m not sure I would guess it was Mars flavour but it is delicious! It will be hard to go to any other flavour after this.
Rated 5 out of 5
Dan –
Great flavour, mixes really well and not to thick, definitely recommend and will buy again.
Rated 5 out of 5
Emma –
I’ve not yet found a protein powder I like until I tried this one! It’s not gritty & tastes absolutely amazing!! Will be ordering again
Rated 5 out of 5
DanL –
Tried Mars protein today for the first time, great taste.
So tasty, blended well, easy to drink.
I desperately need to get more protein so this help massively.
Rated 5 out of 5
Stripes –
I have had powders before from here and I’ve not got on with the just received mars today so I had to taste it and it’s amazing it mixes very well
Rated 5 out of 5
OJ –
The Snickers has a great chocolatey taste, but is let down by the peanut flavour which doesn’t hit well at all. The Mars version has the best parts of the Snickers without any of the negatives.
This shake is smooth, nice thickness and a great chocolatey flavour. It is a little bit sweeter than the others (probably from the caramel flavour). It’s way better than the other chocolate flavours I’ve tried.
Rated 5 out of 5
Abi –
I have tried many flavours of my proteins why protein range but this by far is the best! It tastes exactly like a mars bar – it is tasty mixed into porridge. Will be ordering again!
Rated 5 out of 5
J –
Not a huge fan of the different flavours but this is incredible! Mix it just over the recommended dose at 300ml water and it tastes amazing! Great for a sweet post workout snack or that sweet treat in the evening in opposed to reaching for the biscuit tin! Would definitely recommend
Rated 5 out of 5
Mars Milkshake –
When I had my first shake of this I wasnt sure id like it.
But its so good! SMELLS LOVELY! AND TASTES LIKE A MARS MILKSHAKE!
Quick take: iHerb makes it easy to browse supplements, protein, wellness products, and healthy pantry staples in one place. It’s a handy option for comparing ingredients, brands, and customer reviews before choosing what suits your goals.
Kieran –
This flavour is amazing, tastes exactly like a Mars bar, also not too thick which can sometimes put me off.
This is my favourite flavour so far, I love these new flavour editions. Please don’t get rid of this one!
A Twix flavour would be nice next…
Matt –
I’m not sure I would guess it was Mars flavour but it is delicious! It will be hard to go to any other flavour after this.
Dan –
Great flavour, mixes really well and not to thick, definitely recommend and will buy again.
Emma –
I’ve not yet found a protein powder I like until I tried this one! It’s not gritty & tastes absolutely amazing!! Will be ordering again
DanL –
Tried Mars protein today for the first time, great taste.
So tasty, blended well, easy to drink.
I desperately need to get more protein so this help massively.
Stripes –
I have had powders before from here and I’ve not got on with the just received mars today so I had to taste it and it’s amazing it mixes very well
OJ –
The Snickers has a great chocolatey taste, but is let down by the peanut flavour which doesn’t hit well at all. The Mars version has the best parts of the Snickers without any of the negatives.
This shake is smooth, nice thickness and a great chocolatey flavour. It is a little bit sweeter than the others (probably from the caramel flavour). It’s way better than the other chocolate flavours I’ve tried.
Abi –
I have tried many flavours of my proteins why protein range but this by far is the best! It tastes exactly like a mars bar – it is tasty mixed into porridge. Will be ordering again!
J –
Not a huge fan of the different flavours but this is incredible! Mix it just over the recommended dose at 300ml water and it tastes amazing! Great for a sweet post workout snack or that sweet treat in the evening in opposed to reaching for the biscuit tin! Would definitely recommend
Mars Milkshake –
When I had my first shake of this I wasnt sure id like it.
But its so good! SMELLS LOVELY! AND TASTES LIKE A MARS MILKSHAKE!