Sports Nutrition Weight Gainers
Build a more effective mass-gain routine with our curated selection of sports nutrition weight gainers, chosen for lifters, hardgainers and busy athletes across the United Kingdom who need convenient calorie support. These high-calorie powders and ready-to-mix shakes help you increase daily energy intake alongside a structured resistance training plan, without relying on guesswork. Whether you’re returning to the gym, training for strength, or simply struggling to hit macros, a quality mass gainer can make bulking more manageable and consistent.
Most formulas combine carbohydrates and protein to support a calorie surplus and muscle recovery, often featuring additions such as creatine monohydrate, BCAAs, fibre, vitamins and minerals. You’ll find options designed for post-workout refuelling, between-meal top-ups, or adding calories to breakfast. Choose a blend that suits your digestion and goals, including whey protein-based mixes, higher-carb profiles for faster calorie loading, and balanced macro splits for steadier gains.
How to choose a mass gainer
Match your gainer to training volume, appetite and tolerance. If you’re new to calorie-dense shakes, start with a half serving and increase gradually. Many athletes use a weight gainer after resistance training or as a mid-afternoon shake to keep intake on track.
- Target macros: protein-to-carb ratio for your bulking phase
- Calorie density: easier surplus with less meal prep
- Ingredients: creatine, fibre and micronutrients for performance
- Mixability and taste: a routine you can stick with
Everyday performance support
Ideal for students, shift workers and athletes balancing training with long days—mix with water or milk and track servings in grams. Each product includes clear labelling to support informed choices on carbs, protein, calories and serving size. Pricing and checkout are displayed in GBP for straightforward budgeting in the United Kingdom.
-
Vendor:Core Nutritionals
Core Nutritionals Grow Mass Gainer — Maltodextrin-Free, 880 Cal, 50g Protein, 10 lb (Cookies N Cream)
Core Nutritionals Grow Mass Gainer is designed for real-life fueling. It blends a whole-food carb blend with a complete protein matrix to create a calorie-dense shake that fits into busy days without relying on synthetic carbs. Each serving combines energy-rich carbs with high-quality protein...- £144.84
- £144.84
- Unit price
- per
-
Vendor:Core Nutritionals
Core Nutritionals Grow Mass Gainer – Whole Food Carbs + Protein, 880 Cal, 50g Protein, Maltodextrin Free | Chocolate Peanut Butter Cup | 10 lb
Real-life fuel with Core GROW Mass Gainer Core GROW Mass Gainer from Core Nutritionals is designed for active individuals who want a substantial, whole‑food based shake that fits into a busy life. It avoids flashy carb tech and instead leans on a nourishing, practical...- £144.84
- £144.84
- Unit price
- per
-
Vendor:NAKED
NAKED Chocolate Mass Gainer – All-Natural Weight Gain Protein Powder, 1,360 Calories, 12LB
NAKED Chocolate Mass Gainer: Pure, Calorie-Dense Nutrition Meet a streamlined, all-natural mass gainer designed for real-life nutrition needs. This chocolate-forward formula emphasizes simple, clean ingredients and a generous calorie profile to help you fuel busy days, intense workouts, and recovery routines without artificial additives....- £139.36
- £139.36
- Unit price
- per
-
Vendor:NAKED
NAKED Vegan Mass - Double Chocolate Weight Gainer (1,260 Cal, 50g Protein) – 8lb Bulk
NAKED Vegan Mass Double Chocolate Overview Discover a plant-based weight gainer crafted to deliver calories with clean, natural ingredients. Each serving provides 1,260 calories and 50 g of protein, supported by a 2 to 1 ratio of pea to rice protein. The blend pairs...- £110.87
- £110.87
- Unit price
- per
-
Vendor:NutraBio
NutraBio Extreme Mass Gainer Protein Powder – 53g Protein, 99g Carbs, Clean Weight Gainer – Strawberry Pastry, 6 lb
NutraBio Extreme Mass Gainer is crafted for athletes who want to fuel clean calorie intake with high quality protein and nutrient-dense carbohydrates. This formula blends an anabolic whey protein mix with micellar casein to provide a steady amino acid supply that supports recovery after...- £108.68
- £108.68
- Unit price
- per
-
Vendor:MuscleMeds
MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer – Vanilla Caramel, 10 Pounds
OverviewIf you train hard, the right fueling strategy can matter. Carnivor Mass blends hydrolyzed beef protein isolate with a high‑speed carbohydrate blend and a targeted insulin signaling approach to help deliver protein and energy when you need it. This beef-based gainer aims to provide...- £129.66
- £129.66
- Unit price
- per
-
Vendor:MuscleMeds
MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer – Chocolate Fudge, 10.4 lb
Unlock fast, dense fueling with Carnivor Mass Carnivor Mass centers on hydrolyzed beef protein isolate paired with a robust carbohydrate blend. This setup aims to deliver amino acids and energy with speed, helping you time nutrition around trainings and meals. When used with a...- £129.66
- £129.66
- Unit price
- per
-
Vendor:BSN
BSN TRUE-MASS 1200 Mass Gainer — 1200 Calories, 50g Protein, 4:1 Carbs:Protein, Chocolate Milkshake, 10.38 lb
Powerful calories for serious training BSN TRUE-MASS 1200 is a calorie-dense mass gainer designed for athletes who train intensely and need reliable fuel. Each serving delivers over 1200 calories, with a balanced 4:1 carbohydrate-to-protein ratio and a robust amino acid profile to support active...- £121.05
- £121.05
- Unit price
- per
-
Vendor:GNC
GNC Pro Performance Bulk 1340 Mass Gainer – Cookies & Cream, 50g Whey, 9 Servings
Overview GNC Pro Performance Bulk 1340 Mass Gainer is a high-calorie whey-based blend designed to support demanding training days. The Cookies & Cream flavor offers a creamy, dessert-like experience while the formula combines protein with creatine, BCAA, and essential micronutrients to fit into a...- £91.14
- £91.14
- Unit price
- per
-
Vendor:NAKED
NAKED Strawberry Mass – 1,500 Calories, 50g Protein, Nothing Artificial | 8 lb Strawberry Weight Gainer
NAKED Strawberry Mass: A calorie- and protein-dense option for active lifestyles NAKED Strawberry Mass is designed for individuals who want to increase daily calories and protein without unnecessary ingredients. Each serving delivers a bold mix of taste and texture, combining real dried strawberries with...- £121.83
- £121.83
- Unit price
- per
-
Vendor:BSN
BSN TRUE-MASS 1200 Weight Gainer – 4:1 Carbs-to-Protein, Strawberry Milkshake, 10.25 lb
Mass Gainer for Serious Training BSN TRUE-MASS 1200 is designed for athletes who push through intense training and need steady caloric support. The formula centers on a 4:1 carbohydrate-to-protein balance, pairing energy-dense carbs with a robust protein matrix to help you refuel after demanding...- £127.31
- £127.31
- Unit price
- per
-
Vendor:Optimum Nutrition
Optimum Nutrition GS Pro Gainer – 650 Cal, 60g Protein, Double Chocolate (5.09 lb, Packaging May Vary)
Fuel your gains with GS Pro Gainer When building size, nutrition plays a pivotal role alongside training. Optimum Nutrition GS Pro Gainer is a calorie-dense, high-protein formula designed to support recovery and daily fueling. Each prepared shake delivers calories that count toward your goals...- £113.06
- £113.06
- Unit price
- per
-
Vendor:Maximum Human Performance
MHP UP YOUR MASS XXXL 1350 Weight Gainer - 50g Protein, 1350 Calories, 11g BCAAs, French Vanilla Creme | 16 Servings
Elevate your mass-building journey with UP YOUR MASS XXXL 1350Designed for dedicated lifters, UP YOUR MASS XXXL 1350 packs a robust calorie punch and a high-protein formula. Each scoop is engineered to provide both quick energy and sustained amino availability, so you can feel...- £144.72
- £144.72
- Unit price
- per
-
Vendor:Metabolic Nutrition
Metabolic Nutrition MuscLean Milkshake – High-Protein Keto Meal Replacement, Peanut Butter, 5 lb
Meet MuscLean: Lean Muscle Keto Protein Metabolic Nutrition's MuscLean blends whey protein isolate and concentrate through a precise 10x microfiltration process. Each serving can provide protein from 21g up to 69g depending on serving size, plus 14g of essential fatty acids and only 1g...- £152.51
- £152.51
- Unit price
- per
-
Vendor:MI NUEVA SILUETA
Mi Nueva Silueta Siluette Pro Gainer – Vanilla | Post-Surgery Volume Support
Overview Mi Nueva Silueta Siluette Pro Gainer in vanilla is a protein-carb blend designed to fit into a recovery-focused nutrition plan. Each serving delivers a solid balance of macronutrients and a thoughtful mix of select ingredients that align with daily wellness routines. The goal...- £144.85
- £144.85
- Unit price
- per
-
Vendor:GNC
GNC Pro Performance Bulk 1340 - Vanilla Ice Cream Twin Pack, 9 Servings per Bottle
Overview GNC Pro Performance Bulk 1340 in Vanilla Ice Cream is a high-calorie mass gainer designed for serious training days. Packed as a twin-pack, it provides two convenient bottles with 9 servings each, delivering a creamy, satisfying shake that fits into busy routines and...- £160.17
- £160.17
- Unit price
- per
-
Vendor:MuscleMeds
MuscleMeds Carnivor Mass Big Steer 1250 — 15 lb High-Calorie Beef Protein Mass Gainer
Powerful Mass, Bold Flavor: Carnivor Mass Big Steer 1250 Designed for serious lifters, MuscleMeds Carnivor Mass Big Steer 1250 blends elite protein with a high-calorie profile to support demanding training cycles. Each serving delivers a substantial energy boost and a protein source that is...- £181.29
- £181.29
- Unit price
- per
-
Vendor:Optimum Nutrition
Optimum Nutrition Gold Standard Pro Gainer – Vanilla Custard, 10.19 lb, 28 Servings
Fuel your training with Optimum Nutrition Gold Standard Pro Gainer Building size is a mix of disciplined training and quality nutrition. People progress at different paces, and adding calories and protein can support recovery and energy between sessions. Pro Gainer is a high-protein formula...- £162.38
- £162.38
- Unit price
- per
-
Vendor:IRONVEGAN
IRONVEGAN Athlete's GAINER Vanilla – 10 lb Plant-Based High-Calorie Gainer
Boosted fueling for plant-based training IRONVEGAN Athlete's GAINER is a plant-based, high-calorie supplement designed for athletes who want to support healthy weight gain while maintaining a focus on quality ingredients. Each serving delivers 720 clean calories with a 2.85:1 carbohydrate to protein ratio, crafted...- £166.75
- £166.75
- Unit price
- per
-
Vendor:Metabolic Nutrition
Metabolic Nutrition Musclean – High-Protein Keto Shake, Strawberry, 5 lb | 50 Servings
Musclean: Lean Muscle Keto Protein Power Musclean by Metabolic Nutrition is a lean muscle protein designed to fit keto-friendly, low-carb nutrition. The blend uses 100% 10x-microfiltered enzymatically whey protein isolate and concentrate, delivering a protein range from 21 g to 69 g per serving...- £151.42
- £151.42
- Unit price
- per

































