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  5. Weight Gain Supplements

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Get The Best Weight Gain Supplements Online in South Korea

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10% 끄다
Natural Weight Gain Supplements Fat Gainer Muscle Builder For Men Women 240Pills
US 저장
super health

Natural Weight Gain Supplements Fat Gainer Muscle Builder For Men Women 240Pills

KRW 149419 165139

18% 끄다
Weight Gainer Supplements – Build Muscle Mass Mega Mass + D-Whey Formula 30+30
US 저장
ayush remedies

Weight Gainer Supplements – Build Muscle Mass Mega Mass + D-Whey Formula 30+30

KRW 83550 102474

Gain Appetite Booster Capsules for Adults, Weight Gainer Support for Men and Women, Creatine Enhanced Weight Gain Pills with Ginger Extract, Blessed Thistle and Gentian Root - 120 Capsules
US 저장
Scale Nutrition

Gain Appetite Booster Capsules for Adults, Weight Gainer Support for Men and Women, ...
4.1

300+ bought

KRW 65294

8% 끄다
Weight Gain - CREATINE POWDER 100g - Muscle Gainer Supplements - 2 Bottles
US 저장
nature supplements

Weight Gain - CREATINE POWDER 100g - Muscle Gainer Supplements - 2 Bottles

KRW 91486 99732

Ultimate Nutrition ISO Mass Xtreme Gainer, Isolate Protein Powder with Creatine - Weight Gain Serious Lean Muscle Mass with 60 Grams of Protein, Chocolate Peanut Butter, 30 Servings
US 저장
Ultimate Nutrition

Ultimate Nutrition ISO Mass Xtreme Gainer, Isolate Protein Powder with Creatine - ...
4.2

KRW 295142

Weight Gainer B-12 Chewable Absorbs Faster Than Weight Gain Pills for Fast Massive Weight Gain in Men and Women While Opening Your Appetite More Than Protein
US 저장
Clear-Biotic

Weight Gainer B-12 Chewable Absorbs Faster Than Weight Gain Pills for Fast Massive ...
3.7

50+ bought

KRW 78701

8% 끄다
Weight Gainer - MUSCLE MAKER PLUS - Enhanced Libido 2B
US 저장
nature supplements

Weight Gainer - MUSCLE MAKER PLUS - Enhanced Libido 2B

KRW 91486 99732

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds
US 저장
GNC

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength ...
4.8

100+ bought

KRW 174471

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds
US 저장

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength ...
4.8

100+ bought

KRW 174471

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds
US 저장
GNC

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength ...
4.8

100+ bought

KRW 174471

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds
US 저장
GNC

GNC AMP Mass , Clinically Proven Weight Gainer Protein Powder, Improves Strength ...
4.8

100+ bought

KRW 174471

10% 끄다
Increase Weight Mass Builder Gain Muscle Growth Enhancer Fat Gainer 200 Pills
US 저장
fitofat

Increase Weight Mass Builder Gain Muscle Growth Enhancer Fat Gainer 200 Pills

KRW 158341 175065

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

4k+ bought

KRW 117009

9% 끄다
Increase Body Weight Mass Builder Fat Gainer Muscle Growth Enhancer 100 Pills
US 저장
fitofat

Increase Body Weight Mass Builder Fat Gainer Muscle Growth Enhancer 100 Pills

KRW 96295 106125

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter, 12 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

1k+ bought

KRW 180218

Appetite Booster Weight Gain Stimulant Supplement Eat More For Underweight Adult
US 저장

Appetite Booster Weight Gain Stimulant Supplement Eat More For Underweight Adult

KRW 94248

Naturade All Natural Weight Gain Drink Mix - Gluten Free, Delicious Taste, 1600 Calories per Serving - Mass Gainer w/Carbohydrates & Protein - Chocolate, 40.6 Ounce 24 Servings
US 저장
Naturade

Naturade All Natural Weight Gain Drink Mix - Gluten Free, Delicious Taste, 1600 ...
4.2

50+ bought

KRW 95461

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Banana, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

100+ bought

KRW 142484

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Banana, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

100+ bought

KRW 142484

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.3

200+ bought

KRW 180218

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Banana, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.4

400+ bought

KRW 142484

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Banana, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.4

400+ bought

KRW 142484

7% 끄다
BODY GROW Fast Weight Gain Pills Muscle Gainer 60 WEGHT GAIN CAPSULES FOR - Men
US 저장
dailyamrit

BODY GROW Fast Weight Gain Pills Muscle Gainer 60 WEGHT GAIN CAPSULES FOR - Men

KRW 51339 55123

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

900+ bought

KRW 117009

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.3

700+ bought

KRW 117009

Ultimate Nutrition ISO Mass Xtreme Gainer, Weight Gainer Protein Powder with Creatine, 60 Grams of Protein, Whey Isolate Protein Powder for Lean Muscle Gain, 10 LBS with 30 Servings, Chocolate
US 저장
Ultimate Nutrition

Ultimate Nutrition ISO Mass Xtreme Gainer, Weight Gainer Protein Powder with ...
4.4

KRW 254918

Ultimate Nutrition ISO Mass Xtreme Gainer, Weight Gainer Protein Powder with Creatine, 60 Grams of Protein, Whey Isolate Protein Powder for Lean Muscle Gain, 10 LBS with 30 Servings, Chocolate
US 저장
Ultimate Nutrition

Ultimate Nutrition ISO Mass Xtreme Gainer, Weight Gainer Protein Powder with ...
4.4

KRW 254918

1 Tin X APPETON Weight Gain for Adult High-Protein Chocolate 450g DHL EXPRESS
US 저장
appeton

1 Tin X APPETON Weight Gain for Adult High-Protein Chocolate 450g DHL EXPRESS

KRW 180086

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Vanilla, 6 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

3k+ bought

KRW 117066

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate, 12 Pound Packaging May Vary Pack of 2
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.5

500+ bought

KRW 352585

7% 끄다
Optimum Nutrition, Serious Mass, High Protein Weight Gain Powder, Chocolate 6 lb
US 저장
optimum nutrition

Optimum Nutrition, Serious Mass, High Protein Weight Gain Powder, Chocolate 6 lb
4.7

KRW 129799 138914

Serious Mass Weight Gainer - Chocolate, 6lb Packaging May Vary
US 저장
glanbia performance nutrition

Serious Mass Weight Gainer - Chocolate, 6lb Packaging May Vary

KRW 125957

5% 끄다
HerbalValley Super Weight Gain Natural Capsules for Men and Women, 60 Caps - Pac
US 저장
herbalvalley

HerbalValley Super Weight Gain Natural Capsules for Men and Women, 60 Caps - Pac

KRW 76463 80846

8% 끄다
Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Banana, 12 Pound Packaging May Vary Pack of 2
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin ...
4.4

500+ bought

KRW 268345 290832

6% 끄다
Health Tone Health Tone Weight gain Capsules Regular 500 g +
US 저장
health tone

Health Tone Health Tone Weight gain Capsules Regular 500 g +

KRW 97705 103440

Smoothie Recipes For Weight Gain Healthy and Delicious Smoothies to Pack on the Pounds and Boost Your Fitness Goals Paperback March 17, 2023
US 저장

Smoothie Recipes For Weight Gain Healthy and Delicious Smoothies to Pack on the ...
4

KRW 26986

Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C and Zinc for Immune Support, Vanilla, 12 Pound Packaging May Vary
US 저장
Optimum Nutrition

Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C and Zinc for ...
4.5

1k+ bought

KRW 180218

20% 끄다
Supragenix CB-1 Weight Gainer Pills 90 Count | Weight Gain Support for Women & Men | Clinically Tested Appetite Booster | Powerful Mass Gainer
US 저장
Supragenix

Supragenix CB-1 Weight Gainer Pills 90 Count | Weight Gain Support for Women & Men ...
4.2

1k+ bought

KRW 113179 141891

Appeton Weight Gain Powder Adult Vanilla 900g with Lysine FREE DHL Express Ship.
US 저장
appeton

Appeton Weight Gain Powder Adult Vanilla 900g with Lysine FREE DHL Express Ship.

KRW 280136

BSN TRUE-MASS Weight Gainer, Muscle Mass Gainer Protein Powder, Vanilla Ice Cream, 10.25 Pound
US 저장
BSN

BSN TRUE-MASS Weight Gainer, Muscle Mass Gainer Protein Powder, Vanilla Ice Cream, ...
4.6

KRW 170044

Appeton Weight Gain Powder for Adults Chocolate Flavor 900g EXPEDITE SHIPPING
US 저장
appeton weight gain

Appeton Weight Gain Powder for Adults Chocolate Flavor 900g EXPEDITE SHIPPING

KRW 294058

NAKED Mass - Natural Weight Gainer Protein Powder - 8 LB Bulk, GMO Free, Gluten Free & Soy Free. No Artificial Ingredients - 1,250 Calories per Serving Pack of 2
US 저장
NAKED

NAKED Mass - Natural Weight Gainer Protein Powder - 8 LB Bulk, GMO Free, Gluten ...

KRW 275969

Ultimate Nutrition Natural Gainz Whey Protein Powder - Natural Gainer Protein with Micellar Casein and Milk Protein, Cookies N Cream, 3.6 Pounds
US 저장
Ultimate Nutrition

Ultimate Nutrition Natural Gainz Whey Protein Powder - Natural Gainer Protein with ...
5

KRW 136220

17% 끄다
STRONG Muscle Growth Mass Gainer Fast Weight Gain 60 Capsules Herbal Formula
US 저장
best choice nutrition

STRONG Muscle Growth Mass Gainer Fast Weight Gain 60 Capsules Herbal Formula

KRW 39250 47091

NutraBio Extreme Mass Gainer Protein Powder, 53G Protein, Clean Weight Gainer, Increase Muscle Mass, Full Spectrum Amino Acid - Strawberry Pastry, 6 Pound
US 저장
NutraBio

NutraBio Extreme Mass Gainer Protein Powder, 53G Protein, Clean Weight Gainer, ...
4.9

KRW 139146

5% 끄다
BeautyPlus1 Natural Health Tone Herbal Weight Gain Capsules 90 Pieces
US 저장
healttone

BeautyPlus1 Natural Health Tone Herbal Weight Gain Capsules 90 Pieces

KRW 88996 94171

Weight Gainer | Whey Protein Powder | Muscle Builder for Men & Women | Vanilla, 7.8 lbs
US 저장
MUSCLEOLOGY

Weight Gainer | Whey Protein Powder | Muscle Builder for Men & Women | Vanilla, 7.8 ...
5

KRW 141910

6% 끄다
Extra Effective Health Tone Weight Gain Capsules -90 Caps by Health Tone
US 저장
holland & barrett

Extra Effective Health Tone Weight Gain Capsules -90 Caps by Health Tone

KRW 97705 103440

Shop Premium Weight Gain Supplements Online with Ubuy South Korea

For many, the fitness journey is focused on shedding pounds, but a significant portion of the population faces the exact opposite challenge: putting on mass. Whether you possess a highly active metabolism, lead an intensely busy lifestyle that causes you to miss meals, or are an athlete looking to bulk up, gaining healthy weight requires a consistent caloric surplus. This is where a reliable weight gain supplement steps in as your silent hero.

Purchasing your supplements online from Ubuy South Korea grants you access to a premium, globally sourced catalogue. Situated perfectly within the broader health & supplements category, these products offer a world of high-quality macronutrients, complex carbohydrates, and essential vitamins designed to nourish your body and promote sustainable growth.

Explore Different Types of Weight Gain Supplements

Just as every individual's body is different, the weight gain supplements available today come in highly versatile, targeted formulations. Gone are the days of one size fits all, chalky drinks. Modern nutrition science provides high potency solutions for rapid bulking, cleaner formulations for lean muscle, and gentle options tailored for different age groups and genders. Here at our collection there are many branded weight management supplement options available to pick out from. Think of this as selecting the precise nutritional fuel your body demands to thrive.

The Heavyweight Champions (For Men and Hardgainers)

For those who naturally struggle to put on mass, standard meals simply aren't enough to tip the scales. A high-quality mass gainer protein powder is built for this exact scenario. Packed with upwards of 1,000 calories per serving, these formulas combine fast-acting whey protein with complex carbohydrates to fuel rigorous training sessions and accelerate recovery.

If you are hunting for the best weight gain supplements for skinny guys, you need a product that delivers a massive caloric punch without unnecessary fillers. Brands like MuscleTech and Dymatize lead the charge here, offering robust weight gain supplements for men that stimulate muscle protein synthesis while replenishing glycogen stores. They are the ultimate ally for gym-goers, athletes, and anyone tired of hitting a plateau.

Balanced Nourishment (For Women)

While men often seek sheer size, women typically look for lean muscle development, enhanced curves, and healthy weight restoration without feeling overly bloated. Weight gain supplements for women are specially formulated to meet these precise needs.

These variants generally offer a more moderate caloric surplus—focusing heavily on premium protein sources, digestive enzymes, and added vitamins for hair, skin, and bone health. They seamlessly blend into morning smoothies or post-pilates shakes, providing a clean, sustained energy release that supports your fitness goals whilst keeping you feeling vital and strong.

Gentle Nutrition (For Children)

Sometimes, children struggle to maintain a healthy growth curve due to being fussy eaters, having high activity levels, or navigating medical challenges. In these sensitive cases, weight gain supplements for kids offer a brilliant solution.

These formulas are distinctly different from sports nutrition products. They are fortified with essential vitamins, minerals, and healthy fats necessary for brain and bone development, masking vital nutrients behind delicious, kid-friendly flavours. Always consult with a paediatrician before introducing any new nutritional programme to a child's diet.

A Reddit User r/ADHDparenting asking about weight gain supplements for child

We’ve been doing this for most of my 6 years olds life. We get carnation chocolate milk in the tub, and put 3 heaping tablespoons of the carnation in a cup. Pour several tablespoons of heavy cream over it (start with 1 and see where he balks at the taste after you try it a few times. Then pour around 6 oz of milk over it and use a frother to mix it up. He feels like it’s regular chocolate milk and it gets him an extra 400 calories or so.

Source: r/ADHDparenting (Reddit)

Clean and Premium Blends (For the Health-Conscious)

If your primary concern is the quality of your calories, finding the best weight gainer comes down to ingredient transparency. Clean weight gain powder options eschew artificial sweeteners, dyes, and cheap maltodextrin in favour of whole food carbohydrate sources like sweet potato, oats, and grass-fed protein.

Transparent Labs is renowned for this approach, providing some of the best weight gain supplements on the market for those who want to bulk up without compromising their gut health or dietary ethos. Paired with a trusted favourite like Optimum Nutrition, these products ensure that every extra calorie you consume serves a functional, healthy purpose.

Weight Gain Supplement Picks 2026

To help you navigate your choices, explore our top picks for 2026, featuring innovative formulas tailored for varying needs, from hardcore bulking to clean, everyday nutritional support.

Product 

Brand

Best For

Why It Stands Out

Serious Mass Gainer

Optimum Nutrition

Reliable, clean bulking

The industry standard; offers a high protein to carb ratio (1:5) with 25+ added vitamins and minerals.

Mass Gainer

Transparent Labs

Health conscious athletes

100% grass fed whey, zero artificial sweeteners, colours, preservatives and whole food carbohydrate sources.

Super Mass Gainer

Dymatize

Hardgainers & skinny guys

Exceptionally high calorie count per serving with incredibly rich, dessert-like flavours.

Cell Tech

MuscleTech

Intense muscle growth

Scientifically backed formulas are often infused with creatine to maximise strength alongside size.

Frequently Asked Questions About Weight Gain Supplements

  • How long does a weight gainer take to see results?

    Results are highly dependent on your overall diet and training regimen. However, if you are consistently in a caloric surplus while using a weight gainer, you can generally expect to see noticeable changes on the scale within 2 to 4 weeks.

  • Can weight gain supplements improve my weight?

    Yes, absolutely. To gain weight, you must consume more calories than you burn. These supplements provide a highly convenient, liquid form of dense calories and nutrients, making it significantly easier to hit that required surplus without feeling uncomfortably full.

  • What should I consider before buying a weight gain supplement?

    You should evaluate your specific goals, dietary restrictions, and current caloric intake. Look closely at the macronutrient profile (ratio of protein to carbohydrates to fats) and check the ingredient list to ensure it aligns with your digestive tolerance. Avoid products heavily reliant on added sugars.

  • How do I choose the right weight gain supplement?

    Start by identifying your category. If you have a very fast metabolism, a heavy-duty mass gainer protein powder is ideal. If you are a woman looking for lean curves, opt for targeted weight gain supplements for women. Always prioritise brands that utilise third-party testing and transparent labelling for the safest and most effective results.