IsoPure Protein Powder

Last updated date: January 28, 2019

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We looked at the top 1 Protein Powders and dug through the reviews from 7 of the most popular review sites including BestReviews, Bar Bend, NutriProtein, Ketoaholics, Health Nerdy, The Fitzilla, The Low Carb Diet and more. Through this analysis, we've determined the best Protein Powder you should buy.

Overall Take

In our analysis of 78 expert reviews, the IsoPure IsoPure Protein Powder placed 12th when we looked at the top 13 products in the category. For the full ranking, see below.

Editor's Note November 12, 2019:
Checkout The Best Protein Powder for a detailed review of all the top protein powders.

Expert Summarized Score
7 expert reviews
User Summarized Score
5,907 user reviews
Our Favorite Video Reviews
What experts liked
As the name suggests, a whey protein powder with no carbohydrates.
- BestReviews
What’s really remarkable besides the carb content is the amount of vitamins and minerals. One scoop delivers 25 micronutrients, on average about 30 percent of the recommended daily intake of everything from Vitamins, A, C, E, K, B6, B12, thiamin, riboflavin, and biotin to magnesium, zinc, selenium, copper, manganese, chromium, and a few other minerals.
- Bar Bend
May 2, 2017 | Full review
If you find yourself always on the go with no time to eat breakfast then this protein powder is a convenient answer. It helps you meet the required intake of protein daily and is a good supplement for a healthy lifestyle, diet and workout routine.
- NutriProtein
As seen by all the low-carb protein powders on the market, it can also support weight management or loss
- Ketoaholics
January 4, 2018 | Full review
Many online Isopure drink reviews claim this product is excellent if you’re trying to lose weight. After all, the Isopure powder is low carb and low fat.
- Health Nerdy
November 1, 2018 | Full review
Isopure Zero Carb is clean source of whey protein that has zero carbs!
- The Fitzilla
Isopure was the first protein powder to have 50 grams of 100% pure ion exchange whey protein isolate. It gets absorbed quicker and refuels and repairs tired muscles in an instant. All with little to no lactose, preservatives, fat, calories or carbs.
- The Low Carb Diet
February 12, 2015 | Full review
What experts didn't like
Doesn't taste as good as other brands.
- BestReviews
Isopure Low Carb also doesn’t contain digestive enzymes
- Bar Bend
May 2, 2017 | Full review
The taste and texture of the powder aren’t great. It is chalky and does not mix well with water. It also sits at the bottom of your bottle and sits in your stomach really hard. We find it is hard to digest.
- NutriProtein
Can cause gastrointestinal upset in those who are sensitive to artificial sweeteners such as aspartame.
- Ketoaholics
January 4, 2018 | Full review
There have been reports about Isopure zero carb side effects. The one ingredient many are concerned about it the sucralose.This artificial sweetener, also known as Splenda, can have negative effects on people’s health
- Health Nerdy
November 1, 2018 | Full review
People have complained about the taste.
- The Fitzilla

From The Manufacturer

Pack in powerfully pure protein, without packing on the carbs. Our 100% whey protein isolate powders amp you up, without any unwanted weight. Just pick your level: Zero Carb or Low-Carb (which also has ZERO sugar), both with 25 grams of protein per scoop. It's 100% whey protein isolate loaded with vitamins, minerals and nutrients to keep you going strong—and always without gluten, lactose, or any impurities. Made with our complete microfiltration process to be the only completely clear milk protein when dissolved in water. Available in a range of delicious flavors to mix up some seriously delicious and dynamic recipes.When to Consume - Post workout or other strenuous activity. First thing in the morning. Between meals

Overall Product Rankings

1. Optimum Nutrition Standard Whey Protein
Overall Score: 9.8
Expert Reviews: 0
2. Levels Grass Fed Protein, Undenatured
Overall Score: 9.5
Expert Reviews: 0
3. Vega Sport Premium Protein
Overall Score: 9.4
Expert Reviews: 4
4. Naked Whey Protein Powder
Overall Score: 9.2
Expert Reviews: 9
5. TGS Whey Protein Powder
Overall Score: 9.1
Expert Reviews: 6
6. Dymatize ISO Protein Powder
Overall Score: 9.1
Expert Reviews: 7
7. Optimum Nutrition Gold Standard Protein Powder
Overall Score: 9.0
Expert Reviews: 6
8. Cellucor Whey Protein Powder
Overall Score: 8.7
Expert Reviews: 7
9. BSN Syntha-6 Protein Powder
Overall Score: 8.6
Expert Reviews: 6
10. XPI Myotein Protein Powder
Overall Score: 8.5
Expert Reviews: 8
11. Orgain Organic Protein Powder
Overall Score: 8.0
Expert Reviews: 8
12. IsoPure Protein Powder
Overall Score: 8.0
Expert Reviews: 7
13. Garden of Life Raw Organic Protein
Overall Score: 7.8
Expert Reviews: 3

An Overview On Protein Powders

Protein is a key part of any healthy eating plan. It helps you gain muscle and lose fat as well as provide essential nutrients every body needs. Unfortunately, getting enough lean protein throughout the day can be difficult. Oftentimes you’re on the run and there simply isn’t time for grilling up some chicken or fish. A busy schedule isn’t an excuse for skimping on nutrition, though. Protein powders are the convenient solution to keep you satisfied and on track with your goals.

There are whole aisles devoted to protein powders, including whey, casein, soy and pea to name a few. But not all protein powders are created equal. The nutritional quality, as well as the source of the protein and additional ingredients, varies widely between different manufacturers.

Whey has long been considered the gold standard of protein powders. It comes from cow’s milk and is the watery liquid extracted during cheesemaking. Its claim to fame is that it contains all of the amino acids (or building blocks of protein) that you need for muscle repair after workouts. Similarly,  casein protein is also derived from cow’s milk. However, it takes longer to absorb and digest. It provides excellent overnight fuel for muscles.

There are also several plant-based and vegan protein sources. While many do not contain the full array of amino acids your muscles need, soy is a complete protein. Soy protein isolate tends to be a better option than concentrate because it contains higher levels of protein.

Rice, pea and hemp proteins are good options for anyone with a soy allergy. Unlike soy, these do not contain the full array of amino acids your muscles need on their own. That means manufacturers mix and match a few different plant-based proteins to form a complete protein and include all the amino acids. Additionally, plant-based proteins tend to have an earthy flavor to them.

In addition to unique protein sources, each brand offers a wide variety of flavor options, from minimally unflavored to outrageous combinations like birthday cake or peppermint mocha.

Then, there is texture and price to compare and factor into your protein powder decisions. You should also be prepared for sticker shock when you first venture into the protein powder aisle. The prices for single tubs of protein powder may seem exorbitant, but it’s helpful to look at the high number of servings each one contains. In fact, one tub can last for months and supplement or replace many meals.

With so many options on the market, picking the right protein powder for you can be difficult and overwhelming. The best way to decipher which protein powder is right for you is to look at your goals and how you want to incorporate the supplement into your diet. Certain types of protein are better for muscle gain while others excel at curbing appetite. Once you know what your goals are, then you can stroll confidently into the protein aisle.

In recent years, there has been an overall shift toward cleaner protein. Now, manufacturers are paying more attention to and promoting what’s not in their product as much as what is in the recipe. For example, the highest rated Naked Whey Protein Powder’s unflavored version contains only one ingredient. When it comes to supplements, less is more. The added ingredients can counteract the good work of the protein. In fact, adding sugar and processed ingredients can skew otherwise healthy foods into the junk food category quickly.

DYWM Fun Fact

Long ago, ancient civilizations realized the importance of protein, generally in the form of meat, for athletes and strength. However, it wasn’t until the early 20th century that bodybuilders buoyed the first protein supplements. As bodybuilding became more popular in the 1970s and 1980s, so too did the protein powder and supplement market.

More recently, relaxed regulations helped fuel a surge in new supplements and expanded the market beyond serious bodybuilders. After the Dietary Supplement Health and Education Act of 1994, products and supplements no longer required approval from the U.S. Food and Drug Administration (FDA). Incredibly, manufacturers of protein powders and similar supplements do not have to provide efficacy or safety evidence to the FDA. Those who do are going above and beyond for customers.

The Protein Powder Buying Guide

  • Do your own research and read the ingredient labels and nutrition facts to see exactly what is and isn’t in each product.
  • Whey protein is the most common protein source in protein powders, and it comes from cow’s milk. Anyone with a dairy allergy or sensitivity will want to steer clear of whey.
  • Protein powder should contain all the essential amino acids muscles need to repair and grow. That makes it a “complete protein.” Manufacturers generally include this information prominently on the label.
  • There are many plant-based protein options, including pea, rice, hemp and soy. These are great options for vegetarians, vegans and anyone with allergies.
  • Don’t just focus on the protein source. Additives and other ingredients make a big difference in taste, nutrition quality and texture.
  • Some protein powders mix evenly when stirred, but most work better in a shaker bottle or a blender.
  • Protein powders containing casein, whey isolate or soy are better for weight loss and curbing appetite than other sources. They are satiating and low in calories, as long as the formula includes no added sugars.