With the fast-growing fitness industry, the workout community has sunk deeper into protein powder. The manufactures of these products are continuously making new brands of protein powders. How can you choose the best low-carb protein powder? And which is the best so far?

Protein is a macronutrient with several health benefits, including healthy aging, blood sugar regulation, and weight loss just to mention a few. Many foods provide protein in abundance. However, you may want to increase your intake of this nutrient by taking protein powders. Besides helping bodybuilders increase muscle mass, protein powders are a perfect source of protein for keto dieters. Since there are numerous types of protein powders, choosing the best for your keto diet may be hard. Fortunately, there are many of them which can help you maintain ketosis and watch carb intake. This article discusses the best low-carb protein powders.

1.      Whey Protein Isolate

Whey and casein protein are the main proteins derived from dairy. Given that whey protein is high in amino acids, it is an excellent source of high-quality protein that can be digested easily and absorbed quickly by your body. Whey protein is usually in two types – concentrate and isolate. Whey protein concentrate is the condensed product left behind after lactose has been filtered out. It has high amounts of protein, almost 80 percent by weight, but may range from 35 percent depending on the exclusiveness of the manufacturing process. For instance, one scoop of 80 percent whey protein contains25 g of protein and 4 g of carbs. Whey protein isolate, on the other hand is made by taking whey protein concentrate through further processes to make it more concentrated. This boosts the protein content up to 90 to 95 percent by weight. Whey protein isolate contains high amounts of protein and marked low carbs in each serving. For instance, one scoop weighing 31 g of Isopure delivers 0 g of carbs and 25 g of protein.

2.      Casein Protein

Casein is another high-quality protein, but experts claim that its digestion and absorption is much slower than whey protein. It delivers protein slowly in the body, making it ideal before bed or longer periods of fasting. It is processed the same way, by removing carbs and fat from milk. The best low-carb casein protein powder you can try are Dymatize and NutraBio, as they both contain 2 g of carbs and 25 g of protein per one scoop. Casein powders also delivers decent amounts of calcium, a mineral that is essential in your body for healthy bones, contractions of muscles, and clotting of blood. Both products – Dymatize and NutraBio – supply up to 70 percent of the Recommended Daily Value (RDV) for calcium in a single scoop.

3.      Egg Protein

Eggs are a versatile, nutritious, and healthy food you can eat. They contain beneficial nutrients, including protein, vitamins, minerals, and choline – an important nutrient for proper brain function, as well as nervous system. Egg protein powders are made by dehydrating egg whites into powder, after removing egg yolk. Since avidin is present in egg white, the manufacturing process also pasteurizes the egg white to deactivate this protein. Avidin is a protein that binds to biotin in the digestive tract, inhibiting its absorption. Egg-white protein powders are low in carbs and fat. The best egg-white protein powder you can try is MRM. One scoop of this powder weighing 33 g, provides 2 g of carbs and 23 g of protein. Other manufacturers make egg protein powders that include egg white and yolk. For example, KetoThin provides 1 g of carbs, 12 g of protein, and 15 g of fat per scoop.

4.      Collagen Protein

Collagen is an important protein that gives your body its structure. Several tissues are made up this protein including, bones, ligaments, tendons, hair, skin, and nails. Collagen is highly concentrated in amino acids, making it have some health benefits, such as promoting healthy aging, skin and joints. That said, out of the nine essential amino acids, collagen lacks one. Remember, your body is not able to make essential amino acids, meaning that you must fetch for them from your diet. Collagen protein powders – also known as collagen peptides – is made by grinding animal byproducts, such as fish scales, cow hide, cow bones, eggshell membranes, and chicken bones.

Since collagen protein powders are tasteless and unflavored, you can easily add them to soups or coffee drinks. Additionally, collagen protein powders are naturally free of carbs. For example, two scoops of Vital Proteins weighing 20 g, contains 0 g of carbs and 17 g of protein, while one scoop (11 g) of Sports Research contains 0 g carbs and 10 g of protein. Available flavored collagen protein powders contain added medium-chain triglycerides (MCTs), which are the main component of fat in coconut oil. MCTs are directly transported to the liver from the alimentary canal, where they can be turned into ketones for quick energy. A good example is a product by Perfect Keto, which contains 1 g of carbs, 10 g of protein, and 4 g of fat from MCTs in one scoop weighing 17 g.

5.      Soy Protein Isolate

Soybeans have long been used as an excellent source of protein. Soy protein powder is made by crushing and then grinding soybeans into a meal. This is then made into soy protein isolate, which provides about 90-95 percent of protein by weight and is carb-free. However, some manufacturers may add sugar and flavorings that can increase amount of carbs. For instance, NOW Sports contains 13 g of carbs and 25 g of protein. This soy protein isolate product is vanilla-flavored.

6.      Pea Protein Isolate

Its processing is similar to that of soy protein isolate, where the dried peas are ground into powder and removing carbs. To make it more palatable, some manufacturers add sugar, which in turn increases carb content. For instance, NOW Spots make flavored pea protein isolate that delivers 9 g of carbs and 24 g of protein in a scoop weighing 44 g.


Protein is an essential nutrient in the body. Apart from building muscles, protein promote healthy aging and weight loss. If you are on a low-carb diet or keto diet, you can use several protein powders that conforms to your diet regulations. Isopure is a whey protein powder you can try.


We would like to thank the below contributors who have helped us to write this article:


MS, University of Tartu
Sleep specialist

Using the acquired academic and professional experience, I advise patients with various complaints about mental health - depressed mood, nervousness, lack of energy and interest, sleep disorders, panic attacks, obsessive thoughts and anxieties, difficulty concentrating, and stress. In my free time, I love to paint and go on long walks on the beach. One of my latest obsessions is sudoku – a wonderful activity to calm an unease mind.

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