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Dymatize ISO100 Hydrolyzed Whey vs NOW Sports Whey Protein Isolate

Both deliver 25 g of whey protein per scoop, but they aim at different shoppers. The Dymatize ISO100 is hydrolyzed whey isolate with added flavoring and sweetener, so it mixes fast and tastes like chocolate; owners rate it highly for post-workout shakes. The NOW Sports Isolate is unflavored and unsweetened, third-party tested and Informed Sport certified, and suits people who want a clean, versatile protein to add to their own drinks and recipes. Pick ISO100 for taste and convenience; pick NOW for a neutral, additive-free powder.

  • Choose the Dymatize ISO100 if you want a flavored, fast-mixing hydrolyzed whey shake you can drink straight after training.
  • Choose the NOW Sports Whey Isolate if you want an unflavored, unsweetened isolate you can add to smoothies, coffee or baking without changing the taste.

Prices

  • Dymatize ISO100 Hydrolyzed Whey: $57.04 at Vitacost.com (last seen Nov 9)
  • NOW Sports Whey Protein Isolate: $37.99 at Muscle & Strength (last seen Nov 9)
  • Difference: the NOW Sports Whey Protein Isolate is $19.05 cheaper than the Dymatize ISO100 Hydrolyzed Whey at the latest prices (Nov 9)
Dymatize
Dymatize ISO100 Hydrolyzed Protein Powder

Dymatize ISO100 Hydrolyzed Whey

Dymatize ISO100 Hydrolyzed Protein Powder

4.5(1,300 ratings)
$57.04at Vitacost.comChecked 6 h ago
See all prices and details
Visit Vitacost.com
Pros
  • 25 g protein per serving with added BCAAs
  • Hydrolyzed isolate absorbs fast
  • Chocolate flavor most owners enjoy
  • Mixes quickly with little grit
  • Low carb, no added sugar
Cons
  • Contains added sweetener and flavoring
  • Not stated as third-party tested
  • Only one flavor listed here
  • Hydrolyzed whey usually costs more than plain isolate
NOW Sports
NOW Sports Whey Protein Isolate

NOW Sports Whey Protein Isolate

4.6(310 ratings)
$37.99at Muscle & StrengthChecked 6 h ago
See all prices and details
Visit Muscle & Strength
Pros
  • Unflavored and unsweetened, easy to add to anything
  • Informed Sport certified and steroid tested
  • No artificial sweeteners, soy free, non-GMO, halal and kosher dairy
  • Mixes easily without a grainy texture
  • Light on the stomach for many buyers
Cons
  • Plain taste some buyers dislike in shakes
  • About 19 servings per tub, runs out fast
  • Scoop weight reported higher than the stated 28 g
  • One reviewer reported constipation

What separates them

Dymatize ISO100 Hydrolyzed WheyNOW Sports Whey Protein Isolate
Protein sourceHydrolyzed whey isolate, partially broken down for faster absorptionWhey protein isolate, not hydrolyzed
FlavorChocolate, sweetenedUnflavored, no sweeteners
Sweeteners and additivesContains added sweetener and flavoringNo artificial sweeteners, no aspartame, sucralose or acesulfame-K
Third-party testingNot stated as Informed Sport testedInformed Sport certified and steroid tested
MixabilityDissolves quickly with little foamMixes easily without a grainy texture, per buyers
VersatilityBest as a standalone shakeWorks in smoothies, coffee, baking and keto recipes
TasteChocolate flavor most owners likePlain taste some buyers find unpleasant in shakes or cereal
Servings per containerLarger tub with more servingsAbout 19 servings, small tub that runs out quickly

Price history

$39.99$36.54
Oct 29Nov 10
  • Dymatize ISO100 Hydrolyzed Whey: lowest $36.54 on Oct 29 at eBay; $38.54 on Nov 10.
  • NOW Sports Whey Protein Isolate: lowest $37.99 on Nov 10 at Muscle & Strength.

Prices at every store

Dymatize ISO100 Hydrolyzed Whey

  • DICK'S Sporting GoodsNew

    In stock

    $57.99Checked 6 h ago
    Visit DICK'S Sporting Goods
  • Vitacost.comNew

    Availability unknown

    $57.04Checked 6 h ago
    Visit Vitacost.com
  • Hy-VeeNew

    Availability unknown

    $69.99Checked 6 h ago
    Visit Hy-Vee

Also available at

  • GoSupps.comCheck price at GoSupps.com
  • WalmartCheck price at Walmart
  • The Vitamin ShoppeCheck price at The Vitamin Shoppe
All 3 stores and price history →

NOW Sports Whey Protein Isolate

  • Vitacost.comNew

    In stock

    $44.14Free shippingChecked 6 h ago
    Visit Vitacost.com
  • PureFormulas.comNew

    In stock

    $44.99Free shippingChecked 6 h ago
    Visit PureFormulas.com
  • ThinSlim FoodsNew

    In stock

    $42.99+ $9.99 shippingChecked 6 h ago
    Visit ThinSlim Foods
  • Muscle & StrengthNew

    Availability unknown

    $37.99+ $5.89 shippingChecked 6 h ago
    Visit Muscle & Strength

Also available at

  • AmazonCheck price at Amazon
  • Grove CollaborativeCheck price at Grove Collaborative
  • iHerbCheck price at iHerb
All 7 stores and price history →

Specs compared

SpecDymatize ISO100 Hydrolyzed WheyNOW Sports Whey Protein Isolate
FormPowderPowder
IngredientsAmino AcidsWhey Protein Isolate
Amino Acid TypeBCAABCAAs
Protein Grams Per Serving25 g per serving25 g
FlavorChocolateUnflavored
Protein TypeWheyWhey Protein Isolate
Sugar ContentNo Sugar Added0g (Total Sugars)
Low CarbYes—
Typical Users—Active individuals
Fat Content—0g (Trans Fat)
Number Of Servings—About 19
Diet / Weight Loss System—No
Show all 19 specsShow fewer specs
SpecDymatize ISO100 Hydrolyzed WheyNOW Sports Whey Protein Isolate
Free Of—Soy-Free
Highlighted Diets—Calorie-restricted diet
Certifications—GMP Quality Assured
Dietary Information—Non-GMO
Highlighted Ingredients—BCAAs
Multipack Quantity—1
Texture—Creamy

What reviewers say

Dymatize ISO100 Hydrolyzed Whey

  • 4.5 / 51,300 ratings

Owners rate ISO100 highly for mixing cleanly and sitting light on the stomach, and many use it daily post-workout. The main complaints are price and a sweet, sometimes artificial taste in the chocolate.

What people mention
  • MixabilityPraisedReviewers say it dissolves in water with little grit or clumping.
  • DigestionPraisedMany report less bloating than with whey concentrate.
  • TasteMixedChocolate is liked by most but called sweet or artificial by some.
  • ValueCriticisedBuyers note the isolate price per serving is high.

NOW Sports Whey Protein Isolate

  • 4.6 / 5310 ratings

Buyers rate it highly for clean ingredients, easy mixing and gentle digestion, and many repurchase it. The main complaints are the plain taste and the short supply per container.

What people mention
  • MixabilityPraisedBuyers say it dissolves easily and does not leave a grainy texture.
  • TasteCriticisedSome find the unflavored powder unpleasant in shakes or cereal.
  • IngredientsPraisedReviewers value the lack of artificial sweeteners and the soy-free, non-GMO formula.
  • DigestionMixedMost say it is easy on the stomach, but one buyer reported constipation.

Questions and answers

Which is better for a post-workout shake?
Both work. ISO100 is hydrolyzed, so it is absorbed a bit faster and tastes like chocolate straight from the shaker. NOW Isolate is plain, so you would add your own flavor.
Which has cleaner ingredients?
NOW Sports Isolate. It is unflavored and unsweetened, with no artificial sweeteners, and it is Informed Sport certified. ISO100 adds flavoring and sweetener.
Which mixes better?
They are close. Buyers of both report easy mixing and little grit. ISO100 is formulated for shaker bottles; NOW dissolves well in water, milk or juice.
Can I use the unflavored NOW isolate in food?
Yes. Buyers use it in smoothies, coffee, baking and keto recipes because it adds protein without changing taste. ISO100's chocolate flavor limits that.
Is ISO100 worth stepping up to over NOW?
If you want a ready-to-drink flavored shake and faster-absorbing hydrolyzed whey, yes. If you want a neutral, tested powder you can add to anything, NOW is the better fit.
Which lasts longer per tub?
ISO100. Its tub holds more servings. NOW Isolate has about 19 servings, and buyers say it runs out quickly.

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  • Best whey protein isolate powders