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Deal.ai › Compare

Thorne Whey Protein Isolate vs Optimum Nutrition Gold Standard 100% Whey

Buy Thorne Whey Protein Isolate if you want a lean, easy-to-digest isolate with third-party sport certification and a short ingredient list. Buy Optimum Nutrition Gold Standard 100% Whey if you want more protein per serving, more flavors and a larger tub for everyday training. Thorne leans on purity and NSF Certified for Sport; Gold Standard leans on a whey isolate/concentrate blend, 24 g protein and 5.5 g BCAAs. Owners rate both well, with Thorne slightly higher on ratings and Gold Standard praised for mixability and flavor range.

  • Choose the Thorne Whey Protein Isolate if you are a tested athlete or a label-conscious adult who wants a certified, low-sugar isolate with natural sweeteners.
  • Choose the Optimum Nutrition Gold Standard if you train often, want more protein and BCAAs per scoop, and value a wide flavor choice in a large tub.

Prices

  • Thorne Whey Protein Isolate: $65.00 at Thrive Market (last seen Nov 13)
  • Optimum Nutrition Gold Standard 100% Whey: $39.99 at Hy-Vee (last seen Nov 12)
  • Difference: the Optimum Nutrition Gold Standard 100% Whey is $25.01 cheaper than the Thorne Whey Protein Isolate at the latest prices (Nov 12 and Nov 13)
Thorne
Thorne Whey Protein Isolate

Thorne Whey Protein Isolate

4.6(1,900 ratings)
$65.00at Thrive MarketChecked 21 h ago
See all prices and details
Visit Thrive Market
Pros
  • NSF Certified for Sport, useful for tested athletes
  • Pure whey isolate that is easy to digest
  • Low in sugar, calories and fat
  • Added bromelain and papain enzymes
  • Gluten-free and soy-free
Cons
  • Only 21 g protein per serving
  • One flavor
  • Smaller tub means it runs out faster
Optimum Nutrition
Optimum Nutrition Gold Standard 100% Vanilla Ice Cream 2.27kg

Optimum Nutrition Gold Standard 100% Whey

Optimum Nutrition Gold Standard 100% Vanilla Ice Cream 2.27kg

4.5(432 ratings)
$39.99at Hy-VeeChecked Nov 12
See all prices and details
Visit Hy-Vee
Pros
  • 24 g protein and 5.5 g BCAAs per serving
  • More than 20 flavors
  • Instantized for easy mixing
  • Large 5 lb tub suits frequent training
  • No artificial flavors, sweeteners or colors
Cons
  • Whey concentrate adds carbs and lactose
  • No third-party sport certification listed
  • Fewer ratings than Thorne

What separates them

Thorne Whey Protein IsolateOptimum Nutrition Gold Standard 100% Whey
Protein per serving21 g from whey isolate24 g from a whey isolate and concentrate blend
CertificationNSF Certified for SportNo sport certification listed
Digestive supportAdded bromelain and papain enzymesNo added enzymes
Carbohydrate and lactose loadIsolate only, low in sugar and fatContains concentrate, so more carbs and lactose
Flavor rangeChocolate onlyMore than 20 flavors, including Vanilla Ice Cream
Tub size and servingsSmaller tub, about 30 servings5 lb tub, many more servings
SweetenersFlavors and sweeteners from natural sourcesNo artificial flavors, sweeteners or colors
Ratings4.6 out of 5 from about 1,900 ratings4.5 out of 5 from about 432 ratings

Price history

$91.47$21.99
Nov 1Nov 14
  • Thorne Whey Protein Isolate: lowest $48.00 on Nov 1 at Walmart; $48.00 on Nov 13.
  • Optimum Nutrition Gold Standard 100% Whey: lowest $21.99 on Nov 13 at Walgreens.com; $91.47 on Nov 14.

Prices at every store

Thorne Whey Protein Isolate

  • Vitacost.comNew

    In stock

    $65.00Free shippingChecked Nov 9
    Visit Vitacost.com
  • CarewellNew

    In stock

    $65.00Free shippingChecked Nov 9
    Visit Carewell
  • Thrive MarketNew

    Availability unknown

    $65.00Free shippingChecked 21 h ago
    Visit Thrive Market

Also available at

  • Mayo Clinic StoreCheck price at Mayo Clinic Store
  • WalmartCheck price at Walmart
  • ThorneCheck price at Thorne
All 3 stores and price history →

Optimum Nutrition Gold Standard 100% Whey

  • Hy-VeeNew

    In stock

    $39.99Checked Nov 12
    Visit Hy-Vee
  • WalmartNew

    In stockSold by Nutrition DepotReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $62.94Free shippingChecked 21 h ago
    Visit Walmart
  • Muscle & StrengthNew

    In stock

    $59.99+ $5.89 shippingChecked Nov 12
    Visit Muscle & Strength
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $50.28Free shippingChecked 21 h ago
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart
  • Walgreens.comCheck price at Walgreens.com
  • Ulta BeautyCheck price at Ulta Beauty

Store links may earn us a commission.

All 11 stores and price history →

Specs compared

SpecThorne Whey Protein IsolateOptimum Nutrition Gold Standard 100% Whey
FlavorChocolateVanilla
Weight (oz)32.080.1
Amino AcidsL-Leucine, L-Methionine, L-Lysine, Glycine, L-T…BCAA
ProteinIsolate, Whey ProteinWhey Protein
Primary ingredientProtein, Calcium—
Cal per serv100cal—
Health concernMuscle Growth, Bone & Joint Health—
Ingredient preferenceGluten-Free, Soy-Free—
Serv per cont14—
BrandThorne—
Product net content parent1.08 Pound—
Product multifunction descriptorEasy-to-Digest Muscle Support—
Show all 37 specsShow fewer specs
SpecThorne Whey Protein IsolateOptimum Nutrition Gold Standard 100% Whey
Serving sizeOne packet—
Food formPowders—
Age groupAdult—
Protein per serving21 grams—
No. of Servings30.0—
FeaturesGluten Free, Sweetener, Muscle Function Enhanci…—
Protein Grams Per Serving21 g—
Protein TypeWhey Protein Isolate—
FormPowder—
Sugar Content

What reviewers say

Thorne Whey Protein Isolate

  • 4.6 / 51,900 ratings

With 4.6 out of 5 from about 1,900 ratings, buyers mostly praise the taste, the easy mixing and the clean ingredient list. The main complaints are the packet format and the small number of servings per box.

What people mention
  • TastePraisedBuyers say the chocolate flavor is pleasant and drinkable on its own.
  • MixabilityMixedMost say it mixes well, but some report clumps when shaken by hand.
  • PackagingMixedThe packets are convenient to carry, though buyers note the box holds only 14.
  • ValueCriticisedReviewers say the packets cost more per serving than scooping from a tub.

Optimum Nutrition Gold Standard 100% Whey

  • 4.5 / 5432 ratings

With 432 ratings averaging 4.5 out of 5, buyers largely rate it highly for mixability, taste and protein content. Complaints tend to center on sweetness and the lactose in the concentrate.

What people mention
  • MixabilityPraisedBuyers say it dissolves readily in a shaker with few clumps.
  • TasteMixedMost like the vanilla, but some find it too sweet.
  • Protein contentPraisedUsers value the 24 g of whey protein and BCAA count per serving.
  • DigestionCriticised

Questions and answers

Which is better for lactose sensitivity?
Thorne, because it is isolate only and low in sugar and fat. Gold Standard includes whey concentrate, which carries more lactose.
Which has more protein per scoop?
Gold Standard, at 24 g versus 21 g for Thorne. The gap is small but adds up over several servings a day.
Is Thorne worth stepping up to over Gold Standard?
If you need NSF Certified for Sport or added digestive enzymes, yes. If you mainly want protein volume and flavor choice, Gold Standard covers it.
Which mixes better?
Gold Standard is instantized and widely praised for mixing. Thorne is a fine isolate that also dissolves well in water or a shake.
Which suits older adults maintaining muscle?
Both work. Thorne's isolate and enzyme blend is gentle on digestion, while Gold Standard gives a bit more protein per serving.
Do either contain artificial sweeteners?
Thorne uses sweeteners from natural sources. Gold Standard states no artificial flavors, sweeteners or colors.

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2 g sugar per serving
—
Fat Content1 g fat per serving—
Number Of Servings30—
Typical UsersAthletes, Aging individuals—
Highlighted DietsGluten-free diet—
CertificationsNSF Certified for Sport®—
Dietary InformationLow in calories, Low in fat, Low in sugar—
IngredientsWhey Protein Isolate—
Amino Acid TypeLeucine—
Highlighted IngredientsBromelain, Papain—
Multipack Quantity14 packets—
Packaging VarietyChocolate or vanilla—
material—Vanilla Ice Cream
shape—Vanilla Ice Cream
color—Vanilla Ice Cream
size—5 lbs
A few lactose-sensitive buyers report discomfort from the concentrate.