Optimum Nutrition Supplements and Products at Muscle A&R Madness Quality Supplement Store for athletes and sportsmen, based in the UK.

Optimum Nutrition Clear Protein Powder 240g
Optimum Nutrition Clear Protein Powder 240g
Optimum Nutrition Clear Protein Powder 240g
  • Lightweight and refreshing
  • 20g of whey protein isolate and just 82kcal per serving
  • Low sugar, fat-free, and very low lactose (0.2%)
  • Supports muscle growth and maintenance
  • From the UK’s No.1 Sports Nutrition Brand
not rated £21.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition Electrolyte Powder 264g (33 Servings)
Optimum Nutrition Electrolyte Powder 264g (33 Servings)
Optimum Nutrition Electrolyte Powder 264g (33 Servings)
  • Ideal for intense training sessions or endurance workouts
  • Delivers 400 mg sodium, 113 mg magnesium*, and 300 mg potassium** per serving
  • Magnesium contributes to electrolyte balance and helps reduce tiredness and fatigue*
  • Potassium supports normal muscle function**
  • Zero sugar and free from unnecessary fillers
  • Easy to mix – add 1 rounded scoop (8 g) to 450 ml of cold water
  • Backed by 35 years of sports nutrition expertise and trusted in over 90 countries
not rated £11.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition GOLD STANDARD 100% ISOLATE 450g Chocolate
Optimum Nutrition GOLD STANDARD 100% ISOLATE 450g Chocolate
Optimum Nutrition Gold Standard 100% ISOLATE Protein 450g Chocolate
  • Supports muscle growth, maintenance, and post-workout repair*
  • Ultra-filtered for exceptional purity and quality
  • Provides 25g of high-quality whey protein isolate per serving
  • Contains 5.5g of naturally occurring BCAAs per serving
  • Mix 1 scoop into water, milk, or a smoothie
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Optimum Nutrition Gold Standard 100% ISOLATE Protein 930g
Optimum Nutrition Gold Standard 100% ISOLATE Protein 930g
Optimum Nutrition Gold Standard 100% ISOLATE Protein 930g
  • Supports muscle growth, maintenance, and post-workout repair*
  • Ultra-filtered for exceptional purity and quality
  • Provides 25g of high-quality whey protein isolate per serving
  • Contains 5.5g of naturally occurring BCAAs per serving
  • Mix 1 scoop into water, milk, or a smoothie
not rated £57.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition Gold Standard 100% Whey Protein 450g/465g/480g
Optimum Nutrition Gold Standard 100% Whey Protein 450g/465g/480g
Optimum Nutrition Gold Standard 100% Whey Protein 450g/465g/480g
Gold Standard 100% Whey Protein 450g/465g/480g
  • Supports muscle growth and repair workout
  • The world’s #1 (bestselling) whey protein powder
  • 24g of high-quality, fast-absorbing premium whey protein powder per serving, with Protein Isolate as the No.1 ingredient.
  • Low in sugars and less than 120 calories
  • 5.5g of BCAA in each serving
  • Mix one scoop with water, milk or into your favourite smoothie
  • Voted Best Protein Powder – Men’s Health Sport Nutrition Awards 2024
  • Voted Best Protein Powder – Women’s Health Sport Nutrition Awards 2024
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not rated £31.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition GOLD STANDARD 100% WHEY NEW 2.04kg Vanilla Ice Cream
Optimum Nutrition GOLD STANDARD 100% WHEY NEW 2.04kg Banana Cream
Optimum Nutrition Gold Standard 100% Whey Protein Powder 2.02/2.04kg NEW PACK
Gold Standard 100% Whey Protein Powder 2.02/2.04kg
  • Supports muscle growth and repair workout
  • The world’s #1 (bestselling) whey protein powder
  • 24g of high-quality, fast-absorbing premium whey protein powder per serving, with Protein Isolate as the No.1 ingredient.
  • Low in sugars and less than 120 calories
  • 5.5g of BCAA in each serving
  • Mix one scoop with water, milk or into your favourite smoothie
  • Voted Best Protein Powder – Men’s Health Sport Nutrition Awards 2024
  • Voted Best Protein Powder – Women’s Health Sport Nutrition Awards 2024
CHOOSE FLAVOUR:
not rated £84.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition GOLD STANDARD 100% WHEY 2.28kg Delicious Strawberry
Optimum Nutrition GOLD STANDARD 100% WHEY 2.28kg Banana Cream
Optimum Nutrition Gold Standard 100% Whey Protein Powder 2.28kg
Gold Standard 100% Whey Protein Powder 2.28kg
  • Supports muscle growth and repair workout
  • The world’s #1 (bestselling) whey protein powder
  • 24g of high-quality, fast-absorbing premium whey protein powder per serving, with Protein Isolate as the No.1 ingredient.
  • Low in sugars and less than 120 calories
  • 5.5g of BCAA in each serving
  • Mix one scoop with water, milk or into your favourite smoothie
  • Voted Best Protein Powder – Men’s Health Sport Nutrition Awards 2024
  • Voted Best Protein Powder – Women’s Health Sport Nutrition Awards 2024
CHOOSE FLAVOUR:
not rated £84.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition GOLD STANDARD 100% WHEY NEW PACK 780g French Vanilla Creme
Optimum Nutrition GOLD STANDARD 100% WHEY NEW PACK 780g French Vanilla Creme
Optimum Nutrition Gold Standard 100% Whey Protein Powder NEW PACK 768g/775g/780g
Gold Standard 100% Whey Protein Powder NEW PACK 768g/775g/780g
  • Supports muscle growth and repair workout
  • The world’s #1 (bestselling) whey protein powder
  • 24g of high-quality, fast-absorbing premium whey protein powder per serving, with Protein Isolate as the No.1 ingredient.
  • Low in sugars and less than 120 calories
  • 5.5g of BCAA in each serving
  • Mix one scoop with water, milk or into your favourite smoothie
  • Voted Best Protein Powder – Men’s Health Sport Nutrition Awards 2024
  • Voted Best Protein Powder – Women’s Health Sport Nutrition Awards 2024
CHOOSE FLAVOUR:
not rated £48.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition Platinum Creatine Plus Powder 350g (50 Servings)
Optimum Nutrition Platinum Creatine Plus Powder 350g (50 Servings)
Optimum Nutrition Platinum Creatine Plus Powder 350g (50 Servings)
  • Enhances power to boost performance* during high-intensity workouts
  • ON’s most advanced Creatine formulation
  • 3g Highly soluble CreaBev Creatine per serving
  • 3mg Zinc per serving, supporting immune health**
  • CocoMineral & Aquamin magnesium balances electrolytes
  • Rich in B-vitamins like Thiamine and Niacin, enhancing energy levels during intense workouts***
  • Mix one scoop with 240ml cold water, pre & post workout
not rated £32.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition SERIOUS MASS Weight Gainer 2.73kg Chocolate
Optimum Nutrition SERIOUS MASS Weight Gainer 2.73kg Vanilla
Optimum Nutrition SERIOUS MASS Weight Gainer 2.73kg
  • The ultimate weight gainer powder, ideal for post-workout or between meals, to support muscle building and weight gain.
  • Provides over 1,250 kcal per serving to fuel your goals.
  • Contains 50g of high-quality whey protein and 251g of carbohydrates per serving—formulated to support your nutritional strategy around training and overall energy intake.
  • Includes 25 essential vitamins and minerals to support overall health and performance.
  • Mix 2 scoops with 710 ml of water or milk for a rich and effective weight-gainer shake.
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not rated £49.99 Select options This product has multiple variants. The options may be chosen on the product page
Optimum Nutrition Shaker 600ml with spring
Optimum Nutrition Shaker 600ml with spring
Optimum Nutrition Shaker 600ml with spring
  • 600ml capacity accommodates typical training and recovery servings.
  • Stainless‑steel mixing ball promotes thorough, consistent blending.
  • Leak‑proof, screw‑top lid with flip‑top cap reduces spill risk during transport.
  • Constructed from materials specified as BDPA and DEHP Free for safe contact with consumables.
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