10 Best High Calorie Drinks For Weight Gain in The UK

Last updated on 15/08/2025

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Ensure Plus Milkshake Style Nutritional Supplement Drink Flavour Contains Protein Vitamins and Minerals, Strawberry, 200ml (Pack of 24)

15% Off

Why We Love It

High in energy and nutrients.
Ready-to-drink convenient packaging.
Dietary restriction friendly.

Main Highlights

200ml milkshake style, fat-free nutritional drink high in energy, vitamins and minerals, designed to help manage malnutrition
Every serving contains 300 kcal, 12.5g protein and 28 vitamins and minerals
In a convenient ready-to-drink bottle
Gluten, wheat, egg, nut and clinically lactose free
Suitable for Halal, Kosher and vegetarian diets

FORTISIP Bottle Chocolate 200ml

9% Off

Why We Love It

Registered UK Pharmacy for confidence.
High calorie and protein content.
Long shelf life guarantee.

Main Highlights

High Energy (1.5kcal/ml)
Ready to Drink milk based nutritional supplement
300kcal and 11.8g Protein
Available in 5 flavours
Certified by the Halal Food Council of Europe
Approved for Kosher diets (please check individual flavour variations)
Suitable for Vegetarians
Packaging for illustrative purposes only

24x Fortisip Vanilla High Energy Milkshake Supplement 200ml Bottle

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Why We Love It

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Main Highlights

24x Fortisip Vanilla High Energy Milkshake Supplement 200ml Bottle
Brand : Fortisip
Product type: MEAL REPLACEMENT BEVERAGE
200 ml Pack of 1

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)

Why We Love It

Promotes muscle maintenance overnight.
Guarantees premium quality ingredients.
Suitable for various dietary needs.

Main Highlights

Engineered for Gains: This seamless protein shake mix is specifically formulated to accelerate muscle and weight gains and improve post-workout recovery, enhancing overall workout performance for the dedicated, hard gainer and serious athlete alike
Excellent Nutrition Profile: Packed with quality ingredients, each protein shake serving delivers over 1000 kcals, 200g of complex carbohydrates, 60g of muscle gain protein, critical EAAs, creatine, 18 vitamins and minerals (B12, B6, C, Iron, Zinc)
Outstanding Taste Sensation: Our Chocolate Perfection mass gainer flavour isn't just a treat for your taste buds - it's a deliciously creamy escape into indulgence with every sip, all while you are fueling your body for mass gain and muscle recovery
Optimal Timing for Maximum Impact: Consume Instant Mass Heavyweight high protein shake between meals for a positive nitrogen balance, 20-30 minutes post workout for best results or 45-60 minutes before sleep to aid overnight muscle maintenance
Trusted Quality Assurance: Reflex Nutrition's promise to quality means whey protein powder from grass-fed cows - Protein Sources are Glutamine Peptides, Whey Protein Concentrate, Milk Protein, Hydrolysed Whey Protein
Produced in an Informed Sport Registered Facility - Suitable for vegetarians and Halal certified - Zero added sugars, artificial colors, or soy protein, assuring a conscientious choice of weight gainer for your muscle-building objectives

Fortisip Bottle Multipack (All Flavours or Mixed 12) 12 x 200ml (Mixed Flavours)

Why We Love It

Offers variety with mixed flavours.
Convenient meal beverage solution.
Generous pack size available.

Main Highlights

Fortisip Bottle Multipack All Flavours or Mixed 12 12 x 200ml Mixed Flavours
Product type: MEAL BEVERAGE
Brand: Fortisip
Size: 200 ml Pack of 12

Ensure Plus Banana (12 Pack)

Why We Love It

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Main Highlights

Ensure Plus Banana 12 Pack
Brand : Abbott
Product type: MEAL REPLACEMENT BEVERAGE
200 ml Pack of 12

Huel Ready-to-drink Meal, Strawberries and Cream Protein Drink, 8 x 500ml Bottles, Protein Shakes, Pre-Portioned Meal, 20g of Protein per Bottle, Rich in Essential Vitamins, Meal Replacement Shake

4% OffFree Shipping

Why We Love It

Ready-to-drink convenience.
Packed with essential nutrients.
Eco-friendly and sustainable packaging.

Main Highlights

COMPLETE MEAL IN A BOTTLE: Each bottle delivers up to 22g of plant-based protein, 26 essential vitamins and minerals, and a perfect blend of carbs, fats, and fibre to keep you energized throughout the day.
SMOOTH, CREAMY & ON-THE-GO CONVENIENCE: Pre-portioned and ready to sip, this meal drink is smooth and satisfying. Simply shake and enjoy—ideal for quick breakfasts, work lunches, or fueling up between meetings.
NUTRIENT-RICH INGREDIENTS: Made with oats, pea protein, flaxseed, and tapioca, this meal shake is packed with calcium, potassium, fibre, and healthy fats to support digestion, metabolism, and sustained energy.
SCIENCE-BACKED HEALTH BENEFITS: Delivers over 170 research-backed health benefits to support everyday wellness. Made with nutrients that support muscle function, reduce tiredness and fatigue, contribute to immunity, and maintain healthy skin, hair, and nails
100% VEGAN & GLUTEN-FREE: Plant-based, non-GMO, and free from artificial flavourings, colourings, and preservatives. Huel Ready-to-drink provides clean, sustainable nutrition that tastes great and fits your lifestyle.

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

11% OffFree Shipping

Why We Love It

Boosts muscle growth and performance.
Supports muscle recovery effectively.
Delicious variety of flavours.

Main Highlights

CALORIE RICH PROTEIN SOURCE – the ultimate gainer powder which can be used post-workout or between meals
SUPPORTS SERIOUS SIZE – great for those aspiring to be bigger, for those who find it hard to gain weight / muscle, or for those on the go who have high caloric needs due to intense training
1,255-1272 CALORIES per serving – when mixed with water
50 g – 53 g PROTEIN per serving
250 g+ CARBOHYDRATES per serving
ADDED CREATINE, L-GLUTAMINE & GLUTAMIC ACID
INSTANTISED POWDER – helps the powder dissolve easily and mixes well in a blender with other ingredients such as fruit and nut butters for added calories
24 VITAMINS & MINERALS per serving
NO ADDED SUGAR
AVAILABLE IN 6 LB TUBS OR 12 LB BAGS

Huel Black Edition Ready-to-drink, 8 x 500ml Bottles, Protein Shakes, Cookies & Cream Flavour, High Protein Drink, 35g Protein Per Bottle, Rich in Vitamin D, Fatty Acids, Calcium, Ready Meals

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Why We Love It

High-protein convenient meal solution.
Delicious Cookies & Cream flavor.
Eco-friendly packaging with recycled plastic.

Main Highlights

COMPLETE MEAL IN A BOTTLE: Each bottle is packed with 35g of plant-based protein, 26 essential vitamins and minerals, and 400 calories, offering balanced nutrition wherever life takes you.
SMOOTH, NATURALLY DELICIOUS FLAVOUR: Enjoy a smooth, creamy texture with naturally delicious flavours. Perfect for on-the-go consumption, this ready-to-drink meal is convenient for busy mornings, post-workout recovery, or as a quick meal replacement anytime.
PREMIUM INGREDIENTS, RICH IN NUTRIENTS: Crafted with pea protein, faba bean protein, flaxseed, coconut, and tapioca, this meal shake is loaded with fibre, calcium, iron, and MCTs, supporting digestion, muscle function, metabolism, and energy levels.
SCIENCE-BACKED HEALTH BENEFITS: Packed with over 170 research-backed health benefits to help fuel you through the day. Formulated with protein and essential nutrients that support muscle growth, reduce fatigue, maintain immune function, and help care for your hair, skin, and nails.
100% VEGAN & GLUTEN-FREE: Plant-based and free from artificial sweeteners, flavours, and colourings. Non-GMO and gluten-free, Huel Black Edition Ready-to-drink offers balanced, sustainable nutrition with a taste you will love.

AYMES - Actagain 2.4 Daily - High Energy Nutritional Drink - Strawberry Burst - Pack of 12 Bottles - Gluten Free - Suitable for Adults and Children Aged 6+

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Why We Love It

High energy and convenient option.
Flexible consumption for daily use.
Sustainable packaging reduces waste.

Main Highlights

HIGH ENERGY AND CONVENIENT: Actagain 2.4 Daily is a ready-to-drink nutritional product with a high energy density of 2.4 kcal/ml. Each 250ml bottle provides 600 kcal, 24g of protein, and 26 essential vitamins and minerals, offering a convenient option for individuals looking to increase their daily energy and nutrient intake.
CONVENIENT FORMAT: Each 250ml bottle of Actagain 2.4 Daily contains the equivalent of two 125ml servings, allowing flexibility in how it is consumed. The compact, easy-to-carry packaging is designed with sustainability in mind, using 57% less plastic to help reduce waste.
FLEXIBLE CONSUMPTION: Actagain 2.4 Daily is not only designed for flexibility but also to improve user compliance. One 250ml serving can be consumed in shot-style doses making it easier to incorporate into your daily routine.
EASY TO INCLUDE IN YOUR DIET: To enjoy Actagain 2.4 Daily at its best, refrigerate the bottle before drinking for a cooler, more refreshing taste. Shake the bottle thoroughly to ensure even mixing, then twist off the cap to open. You can drink it straight from the bottle or pour it into a glass. Once opened, reseal the bottle and store it in the fridge, ensuring it’s consumed within 24 hours to maintain freshness.
EXPERTISE, INNOVATION AND SUSTAINABILITY: Backed by over 100 years of combined experience, we are committed to developing reliable, cost-effective nutritional products. Sustainability drives everything we do, from using certified ingredients to cutting packaging waste. As a proud B-Corp-certified company, we’re committed to making a lasting impact, on both people’s lives and the planet.

8.7

Excellent

We scanned 150 products

We reviewed these offers relevant to the High Calorie Drinks For Weight Gain within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Ensure, Fortisip, Reflex, Abbott, Huel, Optimum Nutrition, AYMES, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best High Calorie Drinks For Weight Gain in the market, we considered we took a deep dive into 751 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Ensure Plus Milkshake Style Nutritional Supplement Drink Flavour Contains Protein Vitamins and Minerals, Strawberry, 200ml (Pack of 24). We love many things about this product by Ensure. What sets it apart from the competition is High in energy and nutrients. , Ready-to-drink convenient packaging. , Dietary restriction friendly.
The best value product for most shoppers and where user satisfaction is continuously the highest is FORTISIP Bottle Chocolate 200ml by Fortisip based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for High Calorie Drinks For Weight Gain and the best cost-to-value ratio is Ensure Plus Milkshake Style Nutritional Supplement Drink Flavour Contains Protein Vitamins and Minerals, Strawberry, 200ml (Pack of 24)at Ensure with a 15% discount.
Our list of the best High Calorie Drinks For Weight Gain is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best High Calorie Drinks For Weight Gain in The UK

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We scanned 150 products

We concluded that: