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Protein Supplements

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An essential element in muscle building and repair, protein is a staple no matter your sport - so why not ensure you're investing in the best, courtesy of OnBuy's edit? Ticking off all the popular formats (in the most mouthwatering flavours!) from top sports nutrition brands, our collection has it all - trainers at the ready! Read More >
Comvita Children's Lemon & Honey Lollipops 10 units
£10.98
+ £1.99 UK Delivery
The best value whey protein anywhere in Europe!* Impact Whey Protein® is produced using only premium grade whey protein concentrate, delivering a high 82% protein content. This product has broken all sales records due to its exceptional value for money and great taste. We guarantee* you won...
£16.09
+ £4.75 UK Delivery
Soy Protein Isolate boasts the highest protein content of any soy protein powder. Our Soy Protein Isolate is made from 100% NON-GMO defatted soy beans suing a stringent process which removes a vast majority of the fat and carbohydrate content. The resulting product yields over 90% protein content wi...
£19.99
+ £4.75 UK Delivery
The best value whey protein anywhere in Europe!* Impact Whey Protein® is produced using only premium grade whey protein concentrate, delivering a high 82% protein content. This product has broken all sales records due to its exceptional value for money and great taste. We guarantee* you won...
£19.99
+ £4.75 UK Delivery
It is made-up of 100% premium grade whey protein concentrate and has 20g of protein per serving (80%). This has a comprehensive amino acid profile providing all the essential amino acids (EAA's) and contains over 2g of Leucine per serving. If you're looking for a premium quality whey protein powder ...
£20.45
+ £4.75 UK Delivery
Prime Fifty Maintaining Muscle Strawberry 490g Tub with screw lid Advanced Nutrition for the over 50s
£32.82
+ £1.99 UK Delivery
Our Gold Standard 100% Whey is the world's best-selling whey protein. Gold Standard 100% Whey contains Whey Protein Isolates, or WPI. Rated 90+% pure protein, WPI is known as the highest quality whey ingredient. Each delicious serving of Gold Standard 100% Whey contains 24g of premium whey protein...
£29.00
FREE UK Delivery
Protein 90+: Rapid and sustained released ion exchanged whey and micellar casein is what makes 90+ the most anabolic and anti-catabolic protein available on the market with the lowest levels of fats and carbohydrates. This is pure muscle growth fuel.
£22.95
FREE UK Delivery
Organic HEMP PROTEIN Powder (see pouch for copy)
£20.52
+ £1.99 UK Delivery
Reflex Nutrition Instant Mass Heavyweight - 5.4kg
Multiple options available
Reflex Nutrition Instant Mass Heavyweight - 5.4kg
From: £43.00
FREE UK Delivery
Sunwarrior Classic Protein
Multiple options available
Sunwarrior Classic Protein
From: £71.14
+ £1.99 UK Delivery
Reflex Nutrition One Stop Xtreme
Multiple options available
Reflex Nutrition One Stop Xtreme
From: £55.00
FREE UK Delivery
PhD Nutrition Diet Whey Slimming Weight Loss Meal Replacement Protein Shake
Multiple options available
PhD Nutrition Diet Whey is Available in 9 Flavours - Banana, Belgian Chocolate, Cherry Bakewell, Chocolate Mint, Chocolate Orange, Chocolate Peanut, Strawberry Delight, Vanilla Crème, White Chocolate.   PhD Nutrition Diet Whey is Available in 4 Sizes - 2kg, 1kg, 500g and limited edition...
From: £45.88
FREE UK Delivery
Sci-mx Nutrition Diet Pro Meal
Multiple options available
SCI-MX Nutrition Diet Pro Meal
From: £31.16
FREE UK Delivery
100% pure hemp protein powder.Pulsin's raw hemp powder is one of the most complete and nutritious protein sources on the planet. Hemp is a wonder plant, containing all eight of the essential amino acids the body needs to stay healthy, as well as generous amounts of Omega 3 & 6 and plant fibre.As...
£13.52
+ £1.99 UK Delivery
Enriched with raw rice protein, Pulsin\'s Orange Chocolate Chip Protein Snack is designed to give you sustained energy release without the crash. Containing a generous smattering of chocolate chips as well as a healthy handful of almonds, our bars are free from nasties, contain no added sugars and a...
£44.77
+ £1.99 UK Delivery
Pulsin Pea Protein Isolate is a natural protein resourced from fresh peas to ensure you get all the nutritional value, including a comprehensive amino acid profile, without depending upon dairy or animal produce. This organic protein supplement is free from gluten, cholesterol, lactose and other add...
£35.58
+ £1.99 UK Delivery
Made from 100% whole grain brown rice, this finely milled powder offers a naturally nutritious way to increase your protein intake.Gently extracted using a patented, raw, low temperature enzymatic process without the use of any chemical additives, our sprouted rice protein powder is the perfect solu...
£43.98
+ £1.99 UK Delivery
Pulsin Mint Chocolate Chip Protein Snack - 50g Protein is needed to build muscle, stay healthy, repair cells and fight off infection, making these bars ideal for those recovering from illness, athletes in training, those looking to lose weight, or anyone who needs an energy lift during the day. Vega...
£44.77
+ £1.99 UK Delivery
Vital-Protein is a range of pea protein isolates extracted from golden peas by a natural process to ensure maximum bio-availability.Protein is essential for the support of lean muscle mass, immune function, energy levels, weight control and is the basis for all enzyme activity for basic body mainten...
£34.45
+ £1.99 UK Delivery
Vital-Protein is a range of pea protein isolates extracted from golden peas by a natural process to ensure maximum bio-availability.Protein is essential for the support of lean muscle mass, immune function, energy levels, weight control and is the basis for all enzyme activity for basic body mainten...
£34.45
+ £1.99 UK Delivery
NUTRISPORT - Aspartame Free 90+ Protein - Chocolate 908g: The whey protein in Nutrisport 90+ Protein is absorbed quickly, having a very high biological value and an anabolic effect that lasts a couple of hours. The Micellar Casein in 90+ Protein is absorbed much more slowly, giving a sustained anti-...
£28.71
+ £1.99 UK Delivery
These tasty award-winning pocket rockets are packed with low GI peanuts and contain 14g of whey protein per Ball (28.6g per 100g). The Peanut Protein Ball provides natural high quality protein which is easily assimilated by the body. They are proving to be very popular with gym members. This Ball is...
£119.00
+ £1.99 UK Delivery
A tasty pocket rocket, bursting with nutrients from the king of nuts. The Almond Protein Hit contains the optimum balance of high quality proteins, complex carbohydrates and heart-healthy mono and unsaturated fats. It's an ideal healthy snack to help keep you energised and feel at your best at any t...
£119.00
+ £1.99 UK Delivery
Bounce Cacao Mint Pro Energy Ball 42G Bounce Cacao Mint Protein Balls are the one to choose if you like your healthy snacks minty and chocolatey. Of course, there's no sugary chocolate here, but pure cacao nibs so you get the purest form of nature's raw cocoa. This Bounce ball tastes seriously good,...
£37.10
+ £1.99 UK Delivery
Doves Farm Free Banana & Hemp Seed Flapjack (Pack of 2): Doves Farm Organic Free From Banana & Hemp Seed Flapjack is a delicious snack bar that contains sweet banana and has a slight crunch of hemp seeds. The wonderful bar is organic, gluten free and has been baked with wholegrain oats.Organ...
£28.80
+ £1.99 UK Delivery
Hemp protein powder contains around 50% easily absorbed vegetable protein, is rich in fibre and a source of calcium, iron, magnesium, phosphorus, vitamins B and E and Omega 3. Hemp protein powder comes from hemp seeds. On one hand, it inherits all health benefits from hemp seeds, on the othe...
£10.95
+ £1.99 UK Delivery
25g of high biological protein per 30g serving delivered in only 140 calories;Less than 5g of carbs and only 1g of fat;Almost zero lactose, no low quality milk sugars and fats associated with milk based drinks^ Great tasting drink that is uniquely easy to blend due to the fine protein gradiants;Made...
£10.00
FREE UK Delivery
25g of high biological protein per 30g serving delivered in only 140 calories;Less than 5g of carbs and only 1g of fat;Almost zero lactose, no low quality milk sugars and fats associated with milk based drinks^ Great tasting drink that is uniquely easy to blend due to the fine protein gradiants;Made...
£10.00
FREE UK Delivery
Ekopura Organic Whey Protein - Purely Natural Our organic whey protein concentrate contains 80% protein without artificial additives. Stimulates muscle recovery, muscle build and muscle retention. Contains all essential Amino Acids (BCAA's), Vitamins and Minerals. Because of the high bioavailability...
£22.99
RRP: £26.99
Save £4.00 (15% Off)
FREE UK Delivery
Organic Whey with vanilla flavor, 78% protein Stimulates muscle recovery, muscle build and muscle retention. Contains all essential Amino Acids (BCAA's), Vitamins and Minerals. Because of the high bioavailability of the protein Ekopura Organic Whey is perfectly suited to provide your muscles the bu...
£22.99
RRP: £26.99
Save £4.00 (15% Off)
FREE UK Delivery
<b>Organic Whey with cocoa flavor, 76% protein and no artificial additives</b><br> Stimulates muscle recovery, muscle build and muscle retention. Contains all essential Amino Acids (BCAA's), Vitamins and Minerals. Because of the high bioavailability of the protein Ekopura Organic W...
£22.99
RRP: £26.99
Save £4.00 (15% Off)
FREE UK Delivery

About Protein Supplements

The building block of muscles, protein supplements are a key part of reaching (and smashing!) your goals - made trickier by the fact our bodies don't store it easily! Luckily for you, OnBuy's edit is packed with protein for workouts of all types to see you at peak performance. Phew!

From protein capsules to protein drinks, our collection ticks off the top protein supplements (not forgetting the vegan protein supplements, of course!) - and with targeted protein for weight gain and protein for weight loss alike, you're bound to find what you need to succeed here. 

Hunting for protein powder? Discover powdered protein here to slot into all diets and regimes seamlessly: with everything from whey protein to soy protein powder and casein protein powder, finding the best protein powder for you has never been so simple - thank us later!

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