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Quest Protein Shake Chocolate vs Slate Milk Chocolate Ultra Protein Shake

Both are ready-to-drink milk-based protein shakes with real dairy and low sugar. Quest packs more protein per bottle (45 g vs 42 g) and more calcium, but Slate is leaner on calories (190 vs 230) and has a cleaner ingredient list with no sucralose or carrageenan. Owners rate Slate higher on taste and drinkability; Quest buyers like the higher protein hit but some find it too sweet and too thick.

  • Choose the Quest shake if you want the most protein per bottle and extra calcium, and you don't mind a thicker, sweeter shake.
  • Choose the Slate Ultra if you want fewer calories, zero added sugar, no artificial sweeteners, and the smoother, more milkshake-like taste most owners describe.

Prices

  • Quest Protein Shake Chocolate: $14.99 at Amazon (last seen Nov 12)
  • Slate Milk Chocolate Ultra Protein Shake: $12.99 at ubereats.com (last seen Nov 12)
  • Difference: the Slate Milk Chocolate Ultra Protein Shake is $2.00 cheaper than the Quest Protein Shake Chocolate at the latest prices (Nov 12)
Quest Nutrition
Quest Nutrition Protein Milk Shake Chocolate

Quest Protein Shake Chocolate

Quest Nutrition Protein Milk Shake Chocolate

4.7(38 ratings)
$14.99at AmazonChecked Nov 12
See all prices and details
Visit Amazon

Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • 45 g complete protein per bottle, the highest of the two
  • 1210 mg calcium per bottle
  • Low net carbs (3–4 g) and only 2 g sugar
  • Gluten free and kosher dairy
  • Sold in singles, 4-packs and 12-packs
Cons
  • Thicker texture that some owners find hard to drink
  • Too sweet for some, with a sweetener aftertaste
  • Fewer owner ratings to judge from
  • Uses sucralose
Slate
Slate Milk Chocolate Ultra 42g High Protein Milk Shake

Slate Milk Chocolate Ultra Protein Shake

Slate Milk Chocolate Ultra 42g High Protein Milk Shake

4.9(1,100 ratings)
$12.99at ubereats.comChecked Nov 12
See all prices and details
Visit ubereats.com
Pros
  • 42 g protein at only 190 calories
  • Zero added sugar and keto-friendly
  • No artificial colors, flavors, carrageenan or acesulfame potassium
  • Smoother, more milkshake-like taste; owners rate it 4.9
  • Ultrafiltered real milk removes lactose sugar
Cons
  • Slightly less protein per bottle than Quest
  • No calcium figure published
  • Only sold in 12-can packs
  • Milk-based, so not suitable for dairy-free diets

What separates them

Quest Protein Shake ChocolateSlate Milk Chocolate Ultra Protein Shake
Protein per bottle45 g42 g
Calories per bottle230190
Sugar2 g total sugars, sweetened with sucralose and steviaZero added sugar, keto-friendly
Sweeteners and additivesSucralose, stevia, carrageenan-free but includes gellan gum and sodium polyphosphateNo artificial colors or flavors, no carrageenan, no acesulfame potassium
Texture and tasteThick and creamy; some owners call it too sweet with a sweetener aftertasteSmoother, thinner milkshake texture; owners rate taste higher
Calcium1210 mg per bottleNot stated on the label
Pack formatsSingles, 4-count and 12-count12-can packs
Owner ratings4.7 out of 5 from 38 ratings4.9 out of 5 from 1,100 ratings

Price history

$36.99$12.99
Nov 2Nov 12
  • Quest Protein Shake Chocolate: lowest $14.99 on Nov 12 at Amazon.
  • Slate Milk Chocolate Ultra Protein Shake: lowest $12.99 on Nov 12 at ubereats.com.

Prices at every store

Quest Protein Shake Chocolate

  • AmazonNew

    Availability unknown

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

    $14.99Checked Nov 12
    Visit Amazon

Also available at

  • VitacostCheck price at Vitacost

Store links may earn us a commission.

Prices and history →

Slate Milk Chocolate Ultra Protein Shake

  • ubereats.comNew

    Availability unknown

    $12.99Checked Nov 12
    Visit ubereats.com
  • Swede Things in AmericaNew

    Availability unknown

    $36.99Checked Nov 1
    Visit Swede Things in America
  • AmazonNew

    Availability unknown

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

    $47.88Free shippingChecked Nov 12
    Visit Amazon
  • FoodServiceDirect.comNew

    Availability unknown

    $60.95Checked Nov 1
    Visit FoodServiceDirect.com

Store links may earn us a commission.

All 6 stores and price history →

Specs compared

SpecQuest Protein Shake ChocolateSlate Milk Chocolate Ultra Protein Shake
Protein per serving45g—
Total sugars2g—
Net carbs3g—
Calories230—
Total fat4g—
Saturated fat1g—
Sodium300mg—
Calcium1210mg—
Serving size1 bottle (414mL)—
Bottle size14Fl oz—
Available sizessingles, 4ct and 12ct—
FlavorVanilla—

What reviewers say

Quest Protein Shake Chocolate

  • 4.7 / 538 ratings

Buyers rate it highly for its protein load and filling power. Most like the milkshake-like chocolate taste, though some find it too sweet and too thick.

What people mention
  • TasteMixedBuyers call it a good milkshake-like chocolate, but some find it too sweet with a sweetener aftertaste.
  • TextureMixedDescribed as smooth and creamy, yet very thick and hard to drink for some.
  • ProteinPraisedBuyers value the 45 g of complete protein per bottle.
  • SatietyPraisedBuyers say it keeps them full, useful as a meal replacement or post-workout drink.

Slate Milk Chocolate Ultra Protein Shake

  • 4.9 / 51,100 ratings

Buyers rate it very highly, with taste and texture the recurring reasons. Most describe it as drinking chocolate milk rather than a protein shake, and many cite the protein-to-calorie ratio as the draw.

What people mention
  • TastePraisedBuyers say it tastes like chocolate milk rather than a protein shake.
  • TexturePraisedReviewers call it smooth and clean, without the chalkiness of powder shakes.
  • MacrosPraisedThe 42g of protein at 190 calories is the most-cited reason people keep buying.
  • DigestionPraised

Questions and answers

Which is better after a workout?
Quest gives you 3 g more protein and a large calcium dose per bottle. Slate gives nearly the same protein with 40 fewer calories and no artificial sweeteners. Either works; pick Quest for maximum protein, Slate for leaner macros.
Which tastes better?
Owner feedback favors Slate. Its reviewers describe a smooth milk-chocolate taste, while Quest buyers report a thicker shake that some find too sweet with a sweetener aftertaste.
Is Slate worth stepping up to over Quest?
If you care about a cleaner ingredient list, fewer calories and a thinner texture, yes. If you want the most protein and calcium per bottle and don't mind sucralose, Quest is the stronger pick.
Which has fewer carbs?
Quest lists 3 g net carbs (6 g total minus 2 g fiber). Slate is zero added sugar and keto-friendly but does not publish a net carb figure on the label shown. Quest is the clearer choice if you track net carbs closely.
Are these lactose free?
Neither is labeled lactose free. Slate uses ultrafiltered milk to remove lactose sugar, which suits many lactose-sensitive people, but both contain milk. Avoid both if you have a dairy allergy.
Which lasts longer or is easier to store?
Both are shelf-stable until opened and need refrigeration afterward. Quest comes in plastic bottles in singles, 4-packs and 12-packs; Slate comes in 12-can packs, so Quest is easier to try in small amounts.

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More comparisons

  • Slate Milk Chocolate Ultra 42g High Protein Milk Shake vs Quest Nutrition Protein Shake
Several note no bloat and no lactose trouble from the ultrafiltered milk.