Grenade's protein bars are among the most popular on the market and are great for getting a quick boost of your macros while training.

One of the brand's most popular flavours, Oreo, not only tastes good, but it's also 40% off at Amazon.

Save 41% off Grenade OREO Protein Bars 12-pack, £18.19 (was £30.99) BUY HERE

At around £18 for a 12-pack on offer, it works out about £1.51 per bar, which is a saving of around £12.80 compared to the £30.99 original price.

Amazon has a range of discounted flavours, including Caramel Chaos and Lemon Cheesecake , for less than £20 a pack.

But it's the OREO flavour that remains a popular choice with Amazon shoppers, getting an average rating on Amazon of 4.4 stars from over 3,000 rave reviews.

Packed with 21g of protein and real Oreo biscuits, i

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