Back to product search
slate.beverage

French Vanilla High Protein Milk Shake by Slate Reviewed

The French Vanilla High Protein Milk Shake by Slate is a convenient, shelf-stable beverage designed to deliver high protein without the typical sugar overload. Many health-conscious consumers scan this product to verify if its sweeteners and thickeners align with a clean-label diet. Our analysis confirms it is a highly efficient protein supplement with minimal glycemic impact.

Updated May 2, 2026Product analysis

Health score

75 / 100

75
PoorExcellent
Good

Verdict: moderate

The Slate French Vanilla High Protein Shake earns a 75/100, primarily due to its impressive protein-to-calorie ratio and low sugar content. It is a solid, clean-ingredient choice for most, though its environmental impact is worth noting.

Key takeaways

  • Provides 6.41g of high-quality dairy protein per 100ml.
  • Contains less than 1g of sugar due to monk fruit and stevia.
  • Lactase enzyme added to assist with dairy digestion.
  • Low calorie density at 30.77 kcal per 100ml.
  • Environmental impact rated 50/100 due to dairy industry reliance.

Expert analysis

Our read on this product

Boasting 6.41g of protein per 100ml with less than 1g of sugar, this shake is nutritionally dense while remaining very low in calories. The use of lactase enzyme ensures accessibility for those with mild dairy sensitivities, while monk fruit and stevia provide sweetness without spiking blood glucose. The inclusion of cellulose gum helps maintain texture, though it remains a processed additive.

Best for

This shake is ideal for athletes and busy professionals looking for a high-protein, low-sugar snack that supports muscle recovery without excessive calories.

Approach with care

Individuals with severe dairy allergies should avoid this product, as it is based on ultrafiltered skim milk, and those preferring strictly minimally processed, whole-food diets.

Ingredient breakdown

Good ingredients

Monk Fruit/Stevia Leaf Extract: Good
Lactase Enzyme: Good

Neutral ingredients

Ultrafiltered Skim Milk Blend: Neutral
Natural Flavors: Neutral
Cellulose Gum/Gel: Neutral
Neutral

Ultrafiltered Skim Milk Blend

This is a concentrated milk source that has had water removed through ultrafiltration to increase protein content. It provides high-quality dairy protein and calcium but contains lactose, which can trigger dairy sensitivity.

Neutral

Natural Flavors

Derived from natural sources to enhance the vanilla taste. While generally safe, the specific composition is proprietary and may be complex.

Good

Monk Fruit/Stevia Leaf Extract

These are plant-based non-nutritive sweeteners used to provide sweetness without adding significant calories or sugar. They are excellent alternatives for those watching their blood glucose levels.

Good

Lactase Enzyme

An enzyme added to help break down lactose into simpler sugars. It is designed to make the dairy base easier to digest for those with sensitivity.

Neutral

Cellulose Gum/Gel

These are food additives used as stabilizers and thickeners to maintain the product's texture. They are non-digestible fibers generally recognized as safe.

Nutrition facts

Values shown per 100ml

Energy

30.77 kcal

Protein

6.41g

Carbs

0.64g

Fat

0g

Fiber

0.5g

Sugar

0.31g

low

Sodium

85mg

low

Saturated fat

0g

low

Fiber

0.5g

low

Health goal fit

GoalGradeNotes
Mood EffectBSteady protein intake helps maintain stable energy levels, preventing the mood swings caused by sugar crashes.
Muscle GainAHigh-quality milk proteins provide an effective amino acid profile for muscle repair and growth.
Weight LossAExcellent for weight loss due to high protein content, zero fat, and very low calorie density.
Flu RecoveryCProvides basic protein for immune support, but lacks targeted vitamins like C or Zinc to aid viral recovery.
Fever RecoveryCWhile hydrating, it lacks the electrolyte density and micronutrients needed for aggressive fever recovery.
Pcos ManagementBThe low glycemic impact is helpful for managing insulin resistance, though dairy consumption varies by individual sensitivity.
Diabetes ManagementAExtremely low sugar and carbohydrate content makes this an ideal choice for blood glucose stability.

Myth busters

Not supported

Contains high amounts of added sugar

With only 0.31g of sugar per 100ml, it uses non-nutritive sweeteners like monk fruit instead.

Not supported

Suitable for people with severe dairy allergies

It is made from skim milk; the added lactase only aids lactose digestion, not a true dairy protein allergy.

Supported

A good source of protein

It provides 6.41g of protein per 100ml, making it an efficient protein-dense snack choice.

Frequently asked questions

Is the Slate protein shake healthy?

+

With a 75/100 score, it is considered a healthy, low-sugar, high-protein beverage suitable for most diets, though it is processed.

What is the main health concern?

+

The main concern is the reliance on stabilizers like cellulose gum and the environmental impact associated with high-intensity dairy farming.

What sweeteners are used?

+

It uses monk fruit and stevia leaf extract, which provide sweetness without the blood sugar spikes associated with refined sugars.

Is it suitable for keto or low-carb diets?

+

Yes, with only 0.64g of carbohydrates per 100ml, it fits perfectly into most low-carb and ketogenic dietary frameworks.

Is there a better, more sustainable alternative?

+

For a lower environmental footprint, consider plant-based protein shakes made from pea or hemp protein, which typically require less water and land than dairy.