£29.98

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 8 Servings, 2.73 kg, Packaging May Vary

Chocolate, 1101537

Price data last checked 83 day(s) ago - refreshing...

View at Amazon

Price History & Forecast

Last 8 days • 8 data points (No recent data available)

Historical
Generating forecast...
£32.95 £29.68 £30.40 £31.11 £31.82 £32.53 £33.25 24 January 2026 25 January 2026 27 January 2026 29 January 2026 31 January 2026

Price Distribution

Price distribution over 8 days • 3 price levels

Days at Price
Current Price
2 days · current 5 days 1 day 0 1 3 4 5 £30 £31 £33 Days at Price

Price Analysis

Most common price: £31 (5 days, 62.5%)

Price range: £30 - £33

Price levels: 3 different prices over 8 days

Description

Product Description Optimum Nutrition has been helping performance-focused athletes for over 35 years achieve their goals. This time, we bring you the intense and dialled-up version of our muscle-building and weight gain formula. Meet the Serious Mass high-calorie protein powder, designed for true sports enthusiasts and high-performance athletes. Serious Mass is the ultimate muscle-building and mass gainer formula. This protein powder makes the ideal post-workout and between meals shake for sizing up your goals. Every serving of this mass gainer contains 25 essential vitamins and minerals (including vitamin D, B12, E, Biotin and Magnesium), over 1,250 calories to boost your calorie intake, 50 grams of protein to support muscle growth* and 250 grams of carbohydrates helping support muscle recovery**. Plus, every serving has also been enriched with 3 grams of creatine monohydrate that increases your physical performance during high-intensity exercise***. Designed for the goal-focused athlete, our ON Serious Mass High Calorie Weight Gainer protein powder comes in 6 great tasting flavours: banana, chocolate peanut butter, chocolate, cookies & cream, strawberry and vanilla. Blend this quality protein with fruit or nut butter for extra calories and discover your optimum taste combination. Serious Mass is quick, convenient, and easy to prepare: simply mix 2 heaped scoops with 710 ml of water or plant milk. Use it after intense training as a part of your recovery routine, between meals, and before bed to add calories, carbs, and protein to your healthy, balanced diet. * Source: EFSA Journal 2010;8(10):1811; 2011;9(6):2203 ** Source: EFSA Journal 2011;9(6):2211 ***Source: EFSA Journal 2011;9(7):2303 Ingredients EN INGREDIENTS: Corn Maltodextrin, WHEY Protein Concentrate [MILK] (Emulsifier: Lecithin [SOY]), Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavouring, MILK Mineral Complex, Minerals (Magnesium, Iron, Zinc, Manganese, Fluoride, Selenium, lodine, Copper, Molybdenum, Chromium), Vitamins (C, E, B3, A, B5, B7, B12, Guar Gum, Carrageenan), Sweetener (Sucralose). FOR ALLERGENS SEE INGREDIENTS CAPITALISED AND BOLD. May Contain: Gluten, Eggs, Nuts and Peanuts. B9, D, B6, Bl, K, B2), Salt, Stabilisers (Cellulose Gum, Directions Add 336 g (~ 2 heaped scoops) to a blender filled with 710 ml of water. Blend for 30-45 seconds. NOTE: To be used in the framework of a varied and balanced diet and a healthy lifestyle Safety Warning Always reseal after use, keep in cool dry place. Legal Disclaimer Product should not be used as a substitute for a varied diet. Do not exceed stated recommended daily dose. Keep out of reach of young children. Storage: always reseal after use, keep in a cool dry place. Box Contains 2.73 kg Manufacturer Contact Information 4 Waterside, Dublin 24, Ireland

Key Features

Low fat mass gainer with over 1250 CALORIES and 50g of PROTEIN per serving to support muscle growth* plus 3 grams of CREATINE MONOHYDRATE to support performance**

No added sugar protein powder formula with 25 vitamins and minerals and less than 5g fat per serving, plus over 250 grams of CARBOHYDRATES helping support muscle recovery***

Serious Mass protein powder comes in 6 flavours (banana, chocolate peanut butter, chocolate, cookies & cream, strawberry and vanilla) & contains sweetener

To prepare weight gainer mix 2 scoops with 710 ml of water or plant milk, add fruit or nut butters for a tasty and calorific post workout or between meals protein smoothie

Source EFSA Journal *2010;8(10):1811; 2011;9(6):2203; ** 2011;9(7):2303; ***2011; 9(7):2303

Product Specifications

Model
1101537
Colour
Chocolate
Size
2.73 Kg (pack Of 1)
Format
Personal Care
Domain
Amazon UK
Listed Since
28 June 2009

Barcode

No barcode data available

Similar Products You Might Like

Optimum Nutrition Serious Mass - Peanut Butter, 1250 Cal, 50g Protein
99% match

Optimum Nutrition Serious Mass - Peanut Butter, 1250 Cal, 50g Protein

Optimum Nutrition

£30.97 09 Apr 2026
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45 kg
99% match

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45 kg

Optimum Nutrition

£59.89 05 Feb 2026
Optimum Nutrition Serious Mass - Strawberry 2.73kg, 1250 Cal, 50g
99% match

Optimum Nutrition Serious Mass - Strawberry 2.73kg, 1250 Cal, 50g

Optimum Nutrition

£32.40 16 Feb 2026
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Banana, 16 Servings, 5.45 kg, Packaging May Vary
99% match

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Banana, 16 Servings, 5.45 kg, Packaging May Vary

Optimum Nutrition

£47.00 07 Feb 2026
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73 kg, Packaging May Vary
99% match

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73 kg, Packaging May Vary

Optimum Nutrition

£32.50 13 Jan 2026
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Cookies and Cream, 16 Servings, 5.45 kg, Packaging May Vary
99% match

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Cookies and Cream, 16 Servings, 5.45 kg, Packaging May Vary

Optimum Nutrition

£48.98 01 Feb 2026
Optimum Nutrition Serious Mass Protein Powder with Creatine, Glutamine, 25 Vitamins and Minerals, Chocolate Mint Flavour, 16 Servings, 5.45KG
99% match

Optimum Nutrition Serious Mass Protein Powder with Creatine, Glutamine, 25 Vitamins and Minerals, Chocolate Mint Flavour, 16 Servings, 5.45KG

Optimum Nutrition

£47.00 06 Feb 2026
Optimum Nutrition Serious Mass Protein Powder with Creatine, Glutamine, 25 Vitamins and Minerals, Vanilla Flavour, 16 Servings, 5.45KG
99% match

Optimum Nutrition Serious Mass Protein Powder with Creatine, Glutamine, 25 Vitamins and Minerals, Vanilla Flavour, 16 Servings, 5.45KG

Optimum Nutrition

£52.95 01 Feb 2026
Optimum Nutrition Serious Mass Protein Powder,Strawberry, 5.45kg, 16 Servings
99% match

Optimum Nutrition Serious Mass Protein Powder,Strawberry, 5.45kg, 16 Servings

Optimum Nutrition

£46.48 26 Feb 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Choc Peanut Butter, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Choc Peanut Butter, 5.4 kg)

Reflex

£41.95 27 Jan 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection, 2 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection, 2 kg)

Reflex

£23.90 26 Jan 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection, 5.4 kg)

Reflex

£41.95 31 Jan 2026
USN Hyperbolic Mass Dutch Chocolate 2kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar
96% match

USN Hyperbolic Mass Dutch Chocolate 2kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar

USN

£25.90 27 Jan 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 5.4 kg)

Reflex

£41.95 07 Dec 2025
USN Hyperbolic Mass Chocolate 6kg - 1183 Cal Gainer with 7.5g Creatine
96% match

USN Hyperbolic Mass Chocolate 6kg - 1183 Cal Gainer with 7.5g Creatine

USN

£61.06 11 Feb 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Salted Caramel, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Salted Caramel, 5.4 kg)

Reflex

£41.95 26 Jan 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Blueberry, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Blueberry, 5.4 kg)

Reflex

£41.95 26 Jan 2026
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Vanilla Ice-Cream, 5.4 kg)
96% match

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Vanilla Ice-Cream, 5.4 kg)

Reflex

£41.95 27 Jan 2026
SCI-MX Ultra Mass XL - 4kg - High Calorie Muscle Mass Protein Powder - Chocolate - Muscle Growth & Weight Gain • 60g Protein + 1088 Calories per Serving + 5g Creatine
96% match

SCI-MX Ultra Mass XL - 4kg - High Calorie Muscle Mass Protein Powder - Chocolate - Muscle Growth & Weight Gain • 60g Protein + 1088 Calories per Serving + 5g Creatine

SCI-MX

Out of Stock 29 Jan 2026
Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Chocolate Perfection, 2.03kg)
96% match

Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Chocolate Perfection, 2.03kg)

Reflex

£46.49 28 Jan 2026
USN Hyperbolic Mass French Vanilla 6kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar
96% match

USN Hyperbolic Mass French Vanilla 6kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar

USN

£48.95 26 Jan 2026
Dymatize Super Mass Gainer Gourmet Vanilla 2943g - Weight-Gainer Powder + Carbohydrates, BCAAs and Casein
96% match

Dymatize Super Mass Gainer Gourmet Vanilla 2943g - Weight-Gainer Powder + Carbohydrates, BCAAs and Casein

Dymatize

£40.94 07 Dec 2025
Applied Nutrition Critical Mass Professional - Weight Gain Protein Powder, High Calorie Weight Gainer, Lean Mass (2.4kg - 16 Servings) (Chocolate)
96% match

Applied Nutrition Critical Mass Professional - Weight Gain Protein Powder, High Calorie Weight Gainer, Lean Mass (2.4kg - 16 Servings) (Chocolate)

Applied Nutrition

£28.90 29 Jan 2026
SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)
96% match

SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)

Warrior

£18.52 07 Feb 2026