Whey Protein Isolate 90% (USA)



13 items left

Looking for bulk options? Click Here


Supplement Facts & Directions

Supplement Facts

Serving Size: 30 grams (5 Tbsp or 2 1/2 Scoops)
Servings Per Container: Varies
Amount Per Serving
Calories 111 Calories from fat 0

% Daily Value*
Total fat 0.4g <1%
Cholesterol 3mg <1%
Sodium 60mg 3%
Potassium 165mg 5%
Total Carbohydrates 1g <1%
Protein 25g 51%

Vitamin A 0% Phosphorous 102mg 15%
Calcium 147 mg 15% Magnesium 20mg 5%

* Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value Not Established
‡ These supplement facts may vary from the product you receive. Please call for exact numbers.

Other Ingredients: Whey Protein Isolate, Sunflower Lecithin (emulsifier)

Contains: Milk

Directions: As a dietary supplement, take 30 grams (5 level unpacked Tablespoons/2.5 Scoops) per day, or as directed by a physician.

Warning: Use this product as a food supplement only. DO NOT use for weight reduction.

Product Details

What is Whey Protein Isolate?

Whey protein is a blend of proteins separated from whey, the liquid that remains after coagulating milk to produce cheese. Cow’s milk contains 80% casein protein and 20% whey protein. Whey protein digests faster than casein protein, which makes whey protein ideal as a post-workout supplement. Faster digestion allows the proteins and amino acids to start repairing and rebuilding muscles straight away. In contrast, slower-digesting casein is optimal before fasting periods of rest, such as before bed.

PureBulk’s whey protein isolate is a cold, micro-filtered powder produced in the USA. It is standardized to contain at least 90% pure whey protein. It is also rich in branched-chain amino acids (BCAAs).

What is the Difference Between Whey and Isolate?

The primary difference between whey and isolate is the protein content. Whey protein concentrate powders contain around 80% protein by weight, whereas whey protein isolate powders contain at least 90% protein by weight. Whey protein isolate also has lower levels of fat and carbohydrates than whey protein concentrate powders. Isolate powders also have minimal lactose content, which may make this protein supplement tolerable for individuals with dairy sensitivities. However, both supplements are an excellent source of protein and provide similar benefits.

Whey Protein Isolate vs. Concentrate

In addition to whey protein isolate 90%, PureBulk also carries whey protein concentrate. The primary difference between these protein powders is their manufacturing processes. Whey protein isolate powder takes longer to manufacture than whey protein concentrate, which yields different nutritional properties. The table below shows the nutrition information for a single serving of each protein powder.

Whey Protein Isolate Whey Protein Concentrate
Calories 111 120
Protein 27g 24g
Carbs 1g 2g
Fat 0.4g 2g
Estimated Lactose Up to 1g Up to 3.5g

Potential Whey Protein Isolate Powder Benefits

Whey Protein and Muscle Gain

The primary purpose of whey protein is to enhance muscle gain and exercise performance. Protein is essential to build lean muscle. Whey is a high-quality, complete protein, as it contains all nine essential amino acids. Whey protein is also an excellent source of leucine, a branched-chain amino acid that promotes muscle growth. It’s particularly effective when paired with a strength training regimen, as the combination promotes muscle protein synthesis better than supplementation alone.

Whey Protein for Faster Workout Recovery

Whey protein isolate powder may also help muscle recover faster after exercising, particularly for intense or exhaustive workouts. Protein may reduce delayed onset muscle soreness (DOMS) if consumed 30 minutes prior to a workout. Whey protein isolate contains several BCAAs, which are also effective for reducing muscle soreness.

Whey Protein for Preserving Lean Muscle

Protein and leucine are beneficial for preserving lean muscle and promoting lean muscle growth. These benefits are particularly notable among the elderly. Muscle mass declines with age, which reduces the body’s calorie-burning capacity. Consuming protein and carbohydrates together and eating fewer than 20g of protein per meal reduces protein synthesis in the elderly. As a result, many individuals notice a loss of muscle tone and an increase in body fat as they age.

Whey Protein and Weight Support

While weight protein does not cause weight loss directly, it has several properties that may support other weight loss endeavors. Whey protein isolate isn’t stimulatory, but it may boost energy through calorie consumption and insulin interactions. Having greater energy may yield better exercise performance. Whey protein also helps reduce appetite and improve satiety better than other protein sources. Compared to other types of protein, whey protein has superior fat-burning properties.

Whey Protein as an Antioxidant

Glutathione is a critical antioxidant, but the body needs amino acids like cysteine to produce it. Numerous external factors can restrict cysteine levels and impair glutathione production. As whey protein is rich in cysteine, taking this protein supplement can help synthesize and boost antioxidant levels. Whey proteins also help reduce oxidative stress and inflammation while enhancing other antioxidant defenses.

Potential Whey Protein Isolate Powder Side Effects

Whey protein isolate powder is well-tolerated by most individuals. Whey protein isolate powder may be the better option for people with lactose sensitivities, as it contains minimal lactose compared to other protein powders. Individuals should avoid taking excessive doses of whey protein isolate powder. Too much may result in nausea, bloating, stomach pain, gas, or diarrhea.

Why is Sunflower Lecithin in PureBulk’s Whey Protein Isolate Powder?

The hydrophobic components of whey protein prevent it from dissolving in water without aggressive shaking. Shaking can cause denaturation, which changes the chemical structure of proteins. Sunflower lecithin acts as an emulsifier, which allows whey protein isolate to disperse in liquids easily and prevents mechanical denaturation.

Lecithin is available as sunflower lecithin and soy lecithin. PureBulk uses sunflower lecithin for its superior properties. Individuals with soy allergies can’t consume products made with soy lecithin. Soy may interfere with hormones over time as well. Soy lecithin often comes from genetically modified organisms (GMOs). Extracting lecithin from sunflower seeds is a gentler process and doesn’t require harsh chemicals.

PureBulk’s whey protein isolate is free of sugar, taste additives, preservatives, and fillers. We deliver whey protein isolate powder in a tight, vacuum-sealed bag. Our whey protein powder has an excellent taste, but individuals can add sweeteners if desired.

  1. https://www.ncbi.nlm.nih.gov/pubmed/16230688
  2. https://www.ncbi.nlm.nih.gov/books/NBK44624/#ch3.s20
  3. https://www.ncbi.nlm.nih.gov/pubmed/9405716
  4. https://www.ncbi.nlm.nih.gov/pubmed/16365087
  5. https://www.ncbi.nlm.nih.gov/pubmed/20874802
  6. https://www.ncbi.nlm.nih.gov/pubmed/19850735
  7. https://www.ncbi.nlm.nih.gov/pubmed/19347247
  8. https://www.ncbi.nlm.nih.gov/pubmed/18461101
  9. https://www.ncbi.nlm.nih.gov/pubmed/17342883
  10. https://pubmed.ncbi.nlm.nih.gov/26353786/
  11. https://pubmed.ncbi.nlm.nih.gov/19057193/
  12. https://pubmed.ncbi.nlm.nih.gov/20456814/
  13. https://pubmed.ncbi.nlm.nih.gov/20456814/
  14. https://www.ncbi.nlm.nih.gov/pubmed/24801369
  15. https://www.ncbi.nlm.nih.gov/pubmed/19385022
  16. https://pubmed.ncbi.nlm.nih.gov/25191896/
  17. https://pubmed.ncbi.nlm.nih.gov/21677076/
  18. https://www.ncbi.nlm.nih.gov/pubmed/16365087
  19. https://www.ncbi.nlm.nih.gov/pubmed/11205219
  20. https://pubmed.ncbi.nlm.nih.gov/21167685/
  21. https://pubmed.ncbi.nlm.nih.gov/19638084/
  22. https://pubmed.ncbi.nlm.nih.gov/17710587/

Tested by Accredited 3rd Party Labs

PureBulk's supplements are tested by accredited third party labs in the USA to ensure their identity, purity and potency. To receive a copy of these test results or any other PureBulk supplement please fill out the COA request form found here.

*NOTE: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.