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Whey Isolate

Whey isolate is a refined whey protein with higher protein density and typically less fat and lactose than concentrate — a strong choice if you want a cleaner shake for lean muscle and recovery.

GymStack’s whey isolate collection brings together 130+ powders across chocolate, vanilla, fruity and dessert flavours from performance brands. Use it post-workout, between meals, or anytime you need fast protein without a heavy calorie load.

Buying tip: choose isolate when you want maximum protein per scoop and a lighter mix; choose a blend or whey protein if you prefer creamier texture and value. Hard gainers can stack isolate with a mass gainer, while on-the-go days pair well with protein bars.

Shop authentic brands with fast UK delivery — free over £75.

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NutriSport
NutriSport Whey Isolate 5kg Strawberry

Sale price £77.99 Regular price £93.99

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Per4m
Per4m Isolate Zero 2kg Strawberry

Sale price £93.99 Regular price £112.99
Unit price£47.00 /kg

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Per4m
Per4m Isolate Zero 900g Chocolate Creme

Sale price £46.99 Regular price £56.99

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Per4m
Per4m Isolate Zero 2kg Chocolate Eggsplosion

Sale price £93.99 Regular price £112.99

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Per4m
Per4m Isolate Zero 2kg Vanilla

Sale price £93.99 Regular price £112.99
Unit price£47.00 /kg

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MyProtein
MyProtein Clear Whey Isolate 500g Cranberry & Raspberry

Sale price £26.99 Regular price £32.99

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BSN
BSN Syntha 6 Limited Edition 2.26kg Chocolate Mudslide

Sale price £71.99 Regular price £86.99

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BSN
BSN Syntha-6 Edge 1.87kg Vanilla

Sale price £75.99 Regular price £91.99

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Per4m
Per4m Isolate Zero 2kg Red Velvet

Sale price £93.99 Regular price £112.99
Unit price£47.00 /kg

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Per4m
Per4m Isolate Zero 900g Sticky Toffee

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Per4m
Per4m Isolate Zero 900g Strawberry

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Per4m
Per4m Isolate Zero 2kg White Chocolate Hazlenut

Sale price £93.99 Regular price £112.99
Unit price£47.00 /kg

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Per4m
Per4m Isolate Zero 900g Red Velvet

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Bulk
Bulk Hero Whey Isolate Premium Blend 900g Chocolate

Sale price £42.99 Regular price £51.99
Unit price£47.77 /kg

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Per4m
Per4m Isolate Zero 900g White Chocolate

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Bulk
Bulk Hero Whey Isolate Premium Blend 900g Strawberry

Sale price £42.99 Regular price £51.99
Unit price£47.77 /kg

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Per4m
Per4m Isolate Zero 900g Choc Brownie Batter

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Per4m
Per4m Isolate Zero 900g Caramel Biscuit

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Per4m
Per4m Isolate Zero 2kg Carrot Cake

Sale price £93.99 Regular price £112.99
Unit price£47.00 /kg

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Per4m
Per4m Isolate Zero 900g Carrot Cake

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Bulk
Bulk Hero Whey Isolate Premium Blend 2.27kg Strawberry

Sale price £85.99 Regular price £103.99
Unit price£37.88 /kg

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Bulk
Bulk Hero Whey Isolate Premium Blend 2.27kg Vanilla

Sale price £85.99 Regular price £103.99
Unit price£37.88 /kg

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Per4m
Per4m Isolate Zero 900g White Chocolate Hazlenut

Sale price £46.99 Regular price £56.99
Unit price£52.21 /kg

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Optimum Nutrition
Optimum Nutrition Gold Standard 100% Isolate 930g Chocolate

Sale price £54.99 Regular price £65.99
Unit price£59.13 /kg

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Per4m
Per4m Isolate Zero 900g Dubai Chocolate

Sale price £46.99 Regular price £56.99

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Bulk
Bulk Pure Whey Isolate 900g Chocolate

Sale price £49.99 Regular price £59.99

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Bulk
Bulk Pure Whey Isolate 450g Chocolate

Sale price £26.99 Regular price £32.99

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Bulk
Bulk Hero Whey Isolate Premium Blend 2.27kg Chocolate

Sale price £85.99 Regular price £103.99

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Bulk
Bulk Hero Whey Isolate Premium Blend 900g Vanilla

Sale price £42.99 Regular price £51.99

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Per4m
Per4m Isolate Zero 900g Salted Caramel

Sale price £46.99 Regular price £56.99

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Per4m
Per4m Isolate Zero 2kg Chocolate Peanut Butter

Sale price £93.99 Regular price £112.99

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Optimum Nutrition
Optimum Nutrition Gold Standard 100% Isolate 930g Vanilla

Sale price £54.99 Regular price £65.99

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MyProtein
MyProtein Clear Whey Isolate 500g Watermelon

Sale price £26.99 Regular price £32.99

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Per4m
Per4m Isolate Zero 2kg Tiramisu

Sale price £93.99 Regular price £112.99

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Weider
Isolate Whey 100 CFM - Vanilla Cream - 2000g

Sale price £144.99 Regular price £173.99
Unit price£72.50 /kg

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Weider
Isolate Whey 100 CFM - Cookies & Cream - 2000g

Sale price £144.99 Regular price £173.99
Unit price£72.50 /kg

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Weider
Isolate Whey 100 CFM - Strawberry Ice Cream - 2000g

Sale price £125.99 Regular price £151.99
Unit price£63.00 /kg

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Trained by JP
Performance Isolate - Caramel Fudge - 2000g

Sale price £75.99 Regular price £91.99
Unit price£38.00 /kg

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Trained by JP
Performance Isolate - Banoffee - 1000g

Sale price £53.99 Regular price £64.99
Unit price£53.99 /kg

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Trained by JP
Performance Isolate - Banoffee - 2000g

Sale price £75.99 Regular price £91.99
Unit price£38.00 /kg

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Trained by JP
Performance Isolate - Chocolate Pistachio - 2000g

Sale price £86.99 Regular price £104.99
Unit price£43.50 /kg

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Trained by JP
Performance Isolate - Lemon Meringue Pie - 2000g

Sale price £75.99 Regular price £91.99
Unit price£38.00 /kg

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Mutant
Iso Surge - Strawberry Milkshake - 2270g

Sale price £115.99 Regular price £139.99
Unit price£51.10 /kg

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Mutant
Iso Surge - Cookies & Cream - 727g

Sale price £46.99 Regular price £56.99
Unit price£64.64 /kg

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Mutant
Iso Surge - Triple Chocolate - 727g

Sale price £40.99 Regular price £49.99
Unit price£56.38 /kg

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Mutant
Iso Surge - Triple Chocolate - 2270g

Sale price £115.99 Regular price £139.99
Unit price£51.10 /kg

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Mutant
Hardcore Iso - Vanilla Ice Cream - 727g

Sale price £46.99 Regular price £56.99
Unit price£64.64 /kg

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Mutant
Hardcore Iso - Cookies & Cream - 2270g

Sale price £100.99 Regular price £121.99
Unit price£44.49 /kg

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Mutant
Hardcore Iso - Chocolate Fudge Brownie - 2270g

Sale price £100.99 Regular price £121.99
Unit price£44.49 /kg

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Dorian Yates
Shadowhey Isolate - Vanilla-Caramel - 2000g

Sale price £97.99 Regular price £117.99
Unit price£49.00 /kg

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