As with anything and everything, it depends. You want to try and consume at least 1g of protein every day for every pound of your body weight (roughly 2.2g for every kg), so put as much protein in to your shakes as you need to get you toward and above that figure. For some, 20g will be enough. For most it's going to be 30g+.

Here's how many calories you should be expecting to get from your different sized whey protein shakes. Protein

Whey protein compared to whole foods.

As long as you're getting around 100kcal for every 20g serving of protein I wouldn't worry. All things being equal, I'd be more concerned about how good my whey protein tastes. Whey protein supplement calorie benchmarks. Here's a table that highlights how many calories come with every 1g of protein you get from different whole foods. In summary we feel that XL Nutrition Xtra Protein & Carbs 5kg really hits the mark. We’ve scored it an amazing 9.1/10 overall and there aren’t many products in this category that get such a good score.

Calorie and macronutrient guide for building muscle – Incredible post that outlines how many calories you need in your diet to build muscle and how much protein to take in with that. Once you’ve completed your list of brands you’d be happy to buy from, use these filters and also filter by a price within your budget and you may find that you’re getting much closer to finding the perfect XL Nutrition for you. I don't feel comfortable having that much sugar in my whey protein shakes, especially considering other comparable supplements don't have nearly as much sugar as that. It just seems like a poor effort at the end of the day. Their gold standard whey protein is favoured by many as their protein product of choice. Cramming a whopping 24 grams of the purest whey protein isolate into each serving, Optimum Nutrition gold standard whey is fast-acting, instant mixing and low in fat and sugar. The other thing to consider with brands is your personal preference. Now we of course can’t influence this, but can at least advise you to have a good think about the sort of brands that you’d be comfortable buying. When shopping with retailers like Discount Supplements you can often filter by brands, which is a really useful way to narrow down your search, especially when you’re dealing with 5 products in the XL Nutrition category.Xtra Whey is a straightforward WPC supplement, which is the cheapest and most basic form of whey protein. So from the outset you can expect it to have a few more carbs and fats than more advanced whey blends like Reflex Instant Whey (containing WPI and WPH), but that's not necessarily a bad thing if you're happy with getting a WPC powder on its own.