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17% OFF
Weight Gain High Protein Muscle Gain Appetite Booster Capsule
US Store
grinbizz

Weight Gain High Protein Muscle Gain Appetite Booster Capsule

KES 3975 4788

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 Store
Clear-Biotic

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

50+ bought

KES 7269

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

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

KES 13800 15252

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

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

KES 8450 9211

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

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

KES 7717 9465

19% OFF
Appetite Booster Weight Gain Stimulant Supplement Eat More For Underweight Adult
US Store

Appetite Booster Weight Gain Stimulant Supplement Eat More For Underweight Adult

KES 8732 10733

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 Store
Scale Nutrition

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

300+ bought

KES 6031

8% OFF
Weight Gainer - MUSCLE MAKER PLUS - Enhanced Libido 2B
US Store
nature supplements

Weight Gainer - MUSCLE MAKER PLUS - Enhanced Libido 2B

KES 8450 9211

Naturade Weight Gain, Chocolate, 2.5 lb 1.2 kg
US Store
Naturade

Naturade Weight Gain, Chocolate, 2.5 lb 1.2 kg
4.6

KES 9454

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

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

KES 25873

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 Store

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

100+ bought

KES 16114

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 Store
GNC

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

100+ bought

KES 16114

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 Store
GNC

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

50+ bought

KES 16114

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 Store
GNC

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

100+ bought

KES 16114

Appeton Weight Gain Powder Adult Chocolate 900g with Lysine via DHL Express
US Store
appeton

Appeton Weight Gain Powder Adult Chocolate 900g with Lysine via DHL Express

KES 27300

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

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

2k+ bought

KES 16645

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

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

KES 16633

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 Store
Optimum Nutrition

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

3k+ bought

KES 10807

Body Weight Gain - CREATINE 3X 5000mg - Muscle Building Supplements - 90 Tablets
US Store
nature supplements

Body Weight Gain - CREATINE 3X 5000mg - Muscle Building Supplements - 90 Tablets

KES 6456

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 Store
Optimum Nutrition

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

100+ bought

KES 13160

6% OFF
Naturade, Weight Gain, Vanilla, 20.3 oz 576 g, 12 Servings, Gluten Free
US Store
naturade

Naturade, Weight Gain, Vanilla, 20.3 oz 576 g, 12 Servings, Gluten Free
4.3

KES 5762 6115

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 Store
Optimum Nutrition

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

1k+ bought

KES 16645

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

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

KES 27159

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 Store
Optimum Nutrition

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

200+ bought

KES 16645

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

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

KES 7062 7467

Appeton EXP 2027 Weight Gain Powder for Adults Chocolate 450g
US Store
appeton

Appeton EXP 2027 Weight Gain Powder for Adults Chocolate 450g

KES 12140

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

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

1k+ bought

KES 16645

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 Store
Optimum Nutrition

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

300+ bought

KES 13160

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 Store
Optimum Nutrition

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

200+ bought

KES 13160

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

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

KES 14624 16169

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 Store
Optimum Nutrition

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

500+ bought

KES 32564

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

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

KES 9024 9554

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

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

KES 12190

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

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

1k+ bought

KES 10453 13105

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 Store
Ultimate Nutrition

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

KES 27259

APPETON WEIGHT GAIN CHOCOLATE 900G
US Store
appeton

APPETON WEIGHT GAIN CHOCOLATE 900G

KES 30219

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 Store
Optimum Nutrition

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

1k+ bought

KES 13154

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 Store
Optimum Nutrition

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

3k+ bought

KES 10812

8% OFF
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 Store
Optimum Nutrition

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

500+ bought

KES 24784 26861

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 Store
Optimum Nutrition

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

700+ bought

KES 10807

Myogenix Critical Mass Gainer Muscle Mass Weight Gain Supplement, Zero Lactose Whey Protein Powder Anabolic Whey Protein Cookies & Cream 5 lbs
US Store
Myogenix

Myogenix Critical Mass Gainer Muscle Mass Weight Gain Supplement, Zero Lactose Whey ...
4.2

KES 14869

Appetitol Appetite-Weight Gain Capsules Natural Appetite and Weight Gain Stimulant for Underweight Children Fortified with Vitamins B1,B2,B3,B5,B6,B12,Folic Acid , Iron, Zinc
US Store
CJ Labs

Appetitol Appetite-Weight Gain Capsules Natural Appetite and Weight Gain Stimulant ...
3.8

KES 8154

MuscleMeds Feast Mode Appetite Stimulant Weight Gain Pills Digestive Enzymes Safe and Effective 90 Caps, Unflavored, 90 Count
US Store
MuscleMeds

MuscleMeds Feast Mode Appetite Stimulant Weight Gain Pills Digestive Enzymes Safe ...
4.1

200+ bought

KES 4748

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

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

KES 4742 5091

5% OFF
BeautyPlus1 Natural Health Tone Herbal Weight Gain Capsules 90 Pieces
US Store
healttone

BeautyPlus1 Natural Health Tone Herbal Weight Gain Capsules 90 Pieces

KES 8220 8698

Weight Gainer Protein Powder Muscle Mass Builder Vanilla Flavor 15 Servings
US Store
Holy Company

Weight Gainer Protein Powder Muscle Mass Builder Vanilla Flavor 15 Servings
5

KES 12525

Serious Mass Strawberry Weight Gain Protein Powder | 12 lbs
US Store
Optimum Nutrition

Serious Mass Strawberry Weight Gain Protein Powder | 12 lbs
4.2

50+ bought

KES 16645

19% OFF
Naturade Weight Gain Instant Nutrition Drink Mix, Vanilla ,20.3 Ounce
US Store
naturade

Naturade Weight Gain Instant Nutrition Drink Mix, Vanilla ,20.3 Ounce
4.3

KES 8500 10444

Shop Premium Weight Gain Supplements Online with Ubuy Kenya

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 Kenya 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.