9 products

Whey Protein Isolate 1.8kg Strawberry Flavour Protein Powder in a white container with red detailing
Whey Protein Isolate 1.8kg Banana Cream Flavour Protein Powder in a white container with green detailing
Medi-Evil Nutrition
Medi-Evil Isolate Whey Protein 1.8kg
£64.99 £36.11 / kg
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Whey Excel Protein 2kg-123nutrition
Whey Excel Protein 2kg-123nutrition
Out Angled
Whey Excel Protein 2kg
£47.99 £24.00 / kg
Method Mass-123nutrition
Method Mass-123nutrition
Out Angled
Method Mass 6kg
£47.99 £8.00 / kg
medi-evil nutrition purely mass gainer banana
medi-evil nutrition purely mass gainer chocolate
Medi-Evil Nutrition
Purely Mass Weight Gainer 5.28kg
£35.99 £6.82 / kg
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Whey Protein Isolate-123nutrition
Whey Protein Isolate-123nutrition
Out Angled
Outangled Whey Protein Isolate 2kg
£99.99 £50.00 / kg
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Medi-evil nutrition Whey Dynamic Protein Coconut Cream tub on a white background
Medi-evil nutrition Whey Dynamic Protein Strawberry Delight tub on a white background
Medi-Evil Nutrition
Whey Dynamic Protein 2kg
£49.99 £25.00 / kg
Mass gainer supplement package with '123 Nutrition' branding  in a white and red pouch on a white background
Mass Gainer-123nutrition
123nutrition
Essentials Mass Gainer 3kg
£62.99 £21.00 / kg
Medi evil Nutrition Purely Protein caramel biscuit flavour pouch on a white background
Medi evil Nutrition Purely Protein vanilla flavour pouch on a white background
Medi-Evil Nutrition
Purely Protein 1.8kg
£34.99 £19.44 / kg

Whey Proteins

Fuel your fitness goals with our high-quality Whey Protein range at 123nutrition.co.uk, designed for lifters, athletes, and anyone looking to boost daily protein intake for faster recovery and muscle growth. Choose from ultra-pure Whey Isolate for fast absorption and minimal lactose, versatile Whey Concentrate for unbeatable everyday value, or plant-friendly blends. From indulgences like Rich Chocolate and French Vanilla to refreshing fruity options, our powders mix effortlessly with water or milk. All products feature clear allergen labelling (including milk and soy) alongside vegetarian and gluten-free choices.

Enjoy fast UK delivery (free on orders over £50) and simple 14-day hassle-free returns. Need help choosing? Check out our Whey Protein Buyer's Guide.

Frequently Asked Questions

Q: Should I choose Whey Isolate or Whey Concentrate?

A: Choose Isolate if you want fast digestion, minimal lactose, and fewer calories. Choose Concentrate if you want a budget-friendly, great-tasting everyday option.

Q: When is the best time to take my whey protein shake?

A: Drink it within 30–60 minutes post-workout for optimal muscle recovery, or between meals to easily hit your daily protein targets.