66 servings · 2kg

Grass Fed Whey
Protein Isolate.

★★★★★★★★★★ 4.6 70 ratings
£64.99£0.98 / serving
or £55.24 with Subscribe and save Save 15%
  • ✓27g of protein per 30g scoop from ultra-filtered WPI90
  • ✓Sourced exclusively from European grass-fed dairy cattle
  • ✓Low in fat and sugar
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★★★★★★★★★★ 4.6 · 70 ratingsRead all
14-day returnsVegetarian friendlyMade in the UKGrass-fed cows
ISO 22000 facility✳Grass-fed European WPI90✳Employee owned · est. 2013✳
ISO 22000 facility✳Grass-fed European WPI90✳Employee owned · est. 2013✳
The filtration

One source. Ultra-filtered.

Whey Protein Isolate 90% is filtered further than concentrate. More of the protein stays and most of the fat, sugar and lactose comes out, which is how a 30g scoop carries 27g of protein at 119 calories.

01 · The protein
100%
Whey Protein Isolate 90%

Sourced from European grass-fed dairy cattle. 27g of protein per 30g scoop.

02 · What's left out
0.4g
Sugar per scoop

0.81g of fat and 1.08g of carbohydrate alongside it. A lean protein source for cutting phases or anyone counting calories closely.

Work out your target

How much protein do you need?

Set your weight and goal to see a daily protein target and how much of it one shake covers.

Bodyweight 80kg
45KG70KG90KG110KG130KG
Your goal
One scoop covers 19%
Of your daily protein target, from one 30g scoop.
Building muscle
144g
Protein per day at 1.8g per kg
One 30g scoop27g
Two scoops cover
Food covers the rest90g
One tub lasts33 days at 2/day
A guide, not a prescription. Most protein should come from food.
Transparent label

Inside the scoop.

We don't hide behind proprietary blends. Four ingredients, one protein source, every dose listed.

100% WPI
Grass-fed
Whey Protein Isolate 90%
Sourced from European grass-fed dairy cattle.
Per scoop
27g
Protein content
A single protein source, listed first on the label.
Per 100g
90%
Protein
27g of protein in a 119kcal serving. Low in fat, low in sugar.
0.4g
Sugars
Per 30g serving
0.8g
Fat
0.3g of which saturates
0.19g
Salt
Per 30g serving
4
Ingredients
Whole label, no blends
Nothing hidden

The full label.

Four ingredients. One of them is the protein, and it's the first one listed. Ingredients, allergens and nutrition for Grass Fed Whey Protein Isolate, as printed on the tub.

Ingredients

Whey Protein Isolate (milk), colouring (natural), flavouring, sweetener (sucralose).

Allergen advice

For allergens, see ingredients in bold. Produced in a facility that handles Milk, Soy, Egg and Gluten.

VEGETARIAN FRIENDLYVERY LOW LACTOSEMADE IN THE UK
Nutritional information
Serving size 1 scoop (30g) · 66 servings
Per 30gPer 100g
Energy 119 kcal 397 kcal
Fat 0.81 g 2.7 g
of which saturates 0.31 g 1.03 g
Carbohydrates 1.08 g 3.6 g
of which sugars 0.39 g 1.3 g
Protein 27.0 g 90.0 g
Salt 0.19 g 0.63 g
Every flavour carries 27g of protein per 30g scoop.
Three flavours

27g of protein in every flavour.

2kg is sixty-six shakes. Pick a flavour you'll still want on shake sixty-five.

You've picked

One 30g scoop in 200ml of chilled water for instant mixability, or with milk for a thicker, creamier shake. Twenty seconds in a shaker, no blender needed.

27g
Protein
119
Kcal
66
Servings
How to use

One 30g scoop per serving.

Post-workout, between meals, or any time you need to hit your protein target.

One 30g scoop

30g
One scoop
200ml
Water or milk
20-30s
Shake
With water
Instant mixability, lighter finish
With milk
Thicker, creamier shake, or blend with ice and a banana
The Efectiv difference

How we compare.

Grass Fed Whey Protein Isolate next to our own Whey Protein Concentrate on protein, sugar, lactose and cost per serving. Both are grass-fed. Isolate is the leaner, lower-lactose option.

EFECTIV Isolate
EFECTIV Whey
Protein per scoop
27g
22–23g
Sugar per scoop
0.4g
2.0g
100% whey protein isolate
✓
✕
Dose on the label
✓
✓
Price per serving
£0.98
£1.00

Comparison against Efectiv Whey Protein Concentrate, 60 servings. Price per serving based on RRP. Checked October 2026.

Verified reviews

What people say.

4.6 ★★★★★★★★★★
Based on 70 verified ratings

Verified Grass Fed Whey Protein Isolate reviews from customers who bought it, collected by Lipscore. Good or bad, every review is published.

70
Verified ratings
via Lipscore
★★★★★
27g Protein, 0.4g Sugar

All Grass Fed Whey Protein Isolate reviews.

Collected & verified by Lipscore
On the label

Quality you can check.

Grass Fed Whey Protein Isolate is made in the UK to ISO 22000 standards, with every active ingredient printed on the label with its dose.

Ingredients
Listed in full
Formula
Full dosages listed
Manufacturing
UK, ISO 22000
Label
Every dose listed
Lewis Barker
Our athletes
“Sometimes you’ve gotta go in there and pick fun over ‘optimal’.”
Lewis Barker
Classic Physique Bodybuilder · Efectiv Athlete
18
Efectiv athletes
4.6
70 ratings
6
Sports backed
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Before you ask

Questions, answered.

Whey isolate is a highly filtered form of whey protein, designed to deliver a higher protein content with lower fat and lactose.
Whey isolate is leaner and more refined, containing more protein per serving and less fat, carbs, and lactose compared to whey concentrate.
Both are effective. Whey isolate is ideal if you want a leaner, faster-digesting protein, while concentrate is better for those who want a more balanced, cost-effective option.
Yes, whey isolate is popular during cutting phases due to its lower calorie, fat, and carb content.
Grass Fed Whey Protein Isolate · 66 servings
Rated 4.6 out of 5 from 70 reviews