Protein powders are seemingly everywhere these days, so finding one that’s right for you can be a daunting task. The makers of Isopure Protein say that this product packs in “high-quality proteins” without packing on the carbs. We had to know if this was legit, so our research team got to work, investigating the ingredients, side effects and scientific research behind the formula.
These days, a lot of manufacturers overuse the word “quality.” We wanted to know what customers had to say – do they see results? Our team looked through the scientific studies – Is this protein powder better than the others? Don’t worry; we have all the information you need to put these questions to rest.
Isopure Protein is a line of powdered protein products, drinks, and nutrition supplements. They have low-carb and zero carb options, along with zero sugar and a wide range of flavors to choose from. The makers of Isopure claim that this product should be taken in the morning, before a workout, or as a meal replacement. Isopure Protein is supposed to improve muscle recovery, support muscle health and provide weight management.
How Did Isopure Protein Start?
Isopure Company and Nature’s Best teamed up more than 30 years ago to create Isopure protein. Hal and Ernie are the two responsible for this product. They wanted to create protein to help people be “their most awesome.” Included in their product line are nutrition supplements, protein powders, and drinks. Nature’s Best started 32 years ago and are based out of Inwood, IA.
Scroll below for one of the best products we’ve seen over the last year.
Isopure Protein Claims
Some claims being made by Isopure Protein are:
They are the “first family of fuel.”
They have the highest quality nutrition supplements
Offer the cleanest, purest most perfect protein around
Support muscle building and recovery
Weight management support
Supports muscle health
Provides appetite control
They offer a range of great tasting flavors
Free of artificial sweeteners, flavors, and colors
Isopure Protein Products
Before we look at the ingredients, let’s peek at some of the products Nature’s Best Isopure have to offer. For this section, we will only focus on the powdered products, although they offer an array of protein drinks and teas.
Isopure Zero/Low Carb
This product is claimed to be packed with high-quality protein and available in “zero carb” and “no carb” options. Both products contain zero sugar. Both products have 25 grams of 100% whey protein isolate per scoop, along with vitamins and minerals. It’s also made with naturally occurring and added glutamine, without gluten, lactose or fillers.
It’s available in a range of flavors like:
Chocolate Peanut Butter
Cookies & Cream
Mint Chocolate Chip
Pineapple Orange Banana
Strawberries & Cream
Vanilla Salted Caramel
Isopure Whey Protein Isolate (Unflavored)
This product is said to be a “premium protein.” Unflavored Whey Protein Isolate contains 25 grams of pure whey protein per scoop. The product is said to be stripped of carbs, fillers, fat, lactose, and sugars. It’s claimed to contain zero added colors sweeteners or flavors.
The product is said to:
Support muscle building and recovery
Help users meet their daily protein needs
Help support weight management and appetite control
Support muscle health
Isopure Natural Flavor
Pure protein without artificial colors sweeteners or flavors. Isopure Natural Flavor Whey Protein Isolate has 25 grams of pure whey protein isolate per scoop with added vitamins and minerals.
The product is claimed to be sweetened only with cane sugar and Luo Han Guo. It’s also claimed to be free of lactose, fillers, and gluten. Benefits and usage are the same as the unflavored variety.
Nature’s Best Isopure Coffee is said to have 50 grams of 100% whey protein isolate alongside real coffee for the energy you need to tackle the day. It contains no lactose, gluten or impurities and comes with glutamine and nutrients.
Isopure Coffee is said to have only 10.9 grams of naturally occurring BCAA’s (branched-chain amino acids) in each serving. Said to have 4.6 grams of L-Glutamine in every serving, along with 80mg of caffeine.
Nature’s Best Isopure Mass protein is said to be loaded with 86 grams of carbs, 600 calories and 53 grams of protein. It contains 100% pure whey protein isolate with no lactose or gluten.
It’s designed to help gain mass without feeling bulky.
Isopure Mass protein is said to have 4.9 grams of L-Glutamine and 11.5 grams of BCAA’s in each serving.
Other products available from the line include:
Isopure Anytime Energy
Isopure Creatine Monohydrate
Nature’s Best Plant-Based Protein
Isopure Protein Ingredients
Let’s look at some of the more prominent ingredients in Nature’s Best Isopure protein products. These ingredients include:
Whey protein isolate
Whey Protein Isolate
Whey protein isolate is a dietary ingredient made by separating milk components. Whey can be processed to create three different types of protein:
L-Glutamine is a non-essential amino acid that is made by the body but also found in some foods. The human body requires 20 non-essential and essential amino acids to make a variety of different proteins.
L-Glutamine is most often used for:
Treating weight and intestinal issues
Soreness and swelling in the mouth (caused by chemotherapy)
Caffeine is a stimulant most commonly found in coffee. It is a bitter, psychoactive substance found in the seeds, leaves, and nuts of many plants native to South America and East Asia.
Some of these include:
Although caffeine is widely consumed and said to be safe, it can come along with its fair share of side effects.
L-Theanine is an amino acid analog of L-glutamine. It’s found in plant and fungal species and is considered a constituent of tea.
According to Biochemical and Biophysical Research Communications, this ingredient is an amino acid used in the biosynthesis of proteins. It’s one of the three branched-chain amino acids (along with leucine and valine) which is said to promote glucose uptake and consumption.
Isoleucine is said to induce muscle protein synthesis and helps promote muscle recovery following exercise. Isoleucine is broken down for energy within the muscle tissue.
Does Isopure Protein Work?
The best way to determine whether a product works or not is to look at the scientific research and the customer reviews. There’s no doubt that the ingredients in these products work to some extent. Each one comes along with its bevy of research, with whey protein leading the pack.
Our team combed through customer reviews and found users are happy as well. Most reviews are positive, touching on effectiveness as well as the flavor of Isopure protein products. Some customers weren’t happy with the taste of Isopure, and most negative reviews centered around the quality of the products.
Isopure Protein Benefits and Results
Nature’s Best Isopure Protein claims to come along with a list of benefits:
For this section, however, we focus on the science behind some of the main ingredients.
Whey Protein Isolate
Whey protein contains a range of amino acids which are absorbed quickly. Studies have shown that it can help with fat loss, muscle gain and increased strength.
Whey protein is popular with bodybuilders because of its ability to increase muscle size and strength. It increased the release of anabolic hormones, which is said to stimulate muscle growth.
According to Nutrition & Metabolism, whey protein is also said to help control appetite and have weight-loss benefits.
One study by the journal Obesity weighed the effects of high protein intake on appetite and satiety in overweight men. It concluded, “Collectively, these data support the consumption of HP intake, but not greater eating frequency, for improved appetite control and satiety in overweight/obese men during energy restriction-induced weight loss.”
L-glutamine is an amino acid that plays quite a few roles in the body. They act as building blocks for protein and can fight off harmful viruses and bacteria.
Caffeine is the most commonly used stimulant in the world. Although high amounts of caffeine can be harmful to your health, there are some compelling health benefits, if used correctly. In over-the-counter medicine, caffeine is used to treat drowsiness, tiredness and to enhance the effects of pain medications.
L-theanine is known for a small handful of benefits. Some are:
Improved sleep quality
According to the Journal of Neuroscience, “the combination of moderate levels of L-theanine and caffeine significantly improved accuracy during task switching and self-reported alertness.”
Isopure Protein and Weight Loss
These products are promoted mainly as muscle builders and performance enhancers, but there are some claims of weight loss, which we needed to investigate. Our research team did find some evidence of weight loss surrounding whey protein isolate and caffeine.
Caffeine and Weight Loss
Caffeine “communicates” directly with fat cells, helping to break them down. Caffeine is said to help stimulate the sympathetic nervous system and increase lipolysis. Caffeine may also help increase metabolic rate and helps burn fat.
The British Journal of Nutrition concluded appetite suppression and fat oxidation “were higher on a high-protein diet.” Studies are showing that replacing calorie sources with whey protein could result in up to 8 pounds of weight loss while still increasing muscle mass.
How to Take Isopure Protein
Isopure Zero Carb Directions – Mix 1 scoop with six fluid ounces of water, milk or beverage of your choice.
Isopure Whey Protein Unflavored – Mix 1 scoop with 6-8 fl oz of your favorite flavored beverage.
Isopure Coffee – Mix 2 scoopfuls with 12 fluid ounces of water. It’s suggested to use a blender, but a spoon could work as well.
Isopure Mass – Mix 6 scoops in 16 oz of water, stir and drink.
Where to Buy Isopure Protein
If you want to purchase these products, you can find Nature’s Best Isopure protein on the official website, as well as a handful of trusted online retailers such as:
In November 20915, a class-action lawsuit was filed against Isopure (Nature’s Best) for false and misleading claims. The case centered on the fact that the containers Isopure was delivered in to the consumer contained 30% useless space causing consumers to pay more for the product, according to Top Class Actions.
Isopure Protein Pros and Cons
The prices are affordable.
There’s a wide variety of products in the line.
Reports of bloating and other side effects – though rare.
What Users Are Saying
What Users Are Saying
“This is by far the best tasting protein powder I’ve ever tried. Originally ordered my first container of toasted coconut powder to mix coffee with protein to get a nice wakeup with my postworkout shake (definitely recommend). This protein powder is so rich that I even with just water and icecubes I get a great, creamy shake without any additional ingredients.”
“It might be a great product in terms of no carbs and therefore very keto friendly. But when it comes to taste the artificial sweetener taste makes the consumption un unpleasant experience. The sweetness is very present and has an industrial aftertaste to it.”
“On the taste, it’s like a somewhat flavorless vanilla. Pretty much tastes, looks, and smells like powdered milk. I put two scoops in a 16 ounce glass to try that…I’m not sure what they use as a preservative, but it was almost…salty? One scoop, in 10 oz of water was quite diluted. This would be just fine mixed with berry’s and some yogurt for a protein shake. By itself…well, I’m disappointed.”
The Bottom Line on Isopure Protein
Isopure protein is a quality choice for a protein powder. You can use it as a meal replacement or an in-between meal snack. However, there are alternatives to add to your weight management plan.
You may find this line of protein products effective, and even more so if you pair it with the right support system for you.
One of the best programs we’ve seen is one called Noom. The parts of this program that make it amazingly unique include one-on-one support, a personalized weight-loss plan, human coaching and more.
Also, the team behind Noom offers a 14-day trial as a sign of confidence in their program.
Isopure Protein contains a whey protein isolate and a vitamin and mineral blend including calcium, magnesium, potassium, sodium, zinc, copper, manganese, riboflavin, thiamin, vitamin A, chromium, folic acid, biotin, and other trace minerals. Other ingredients included are soy lecithin, glutamine, sucralose, artificial flavor, and xanthan gum.
What are the side effects of Isopure Protein?
Excess intake of Isopure Protein can lead to bloating, hypercalcemia, and stomach pain.
Does Isopure Protein work?
Isopure Protein helps with post-workout recovery and amino acid recruitment for muscle proteins.
What is the price of Isopure Protein?
A three-pound container of Isopure Protein powder usually retails for $35-$50.