Weight Gainer

Bulk Up Mass With Best Weight Gainer Supplements In Pakistan

FitFlex is Pakistan’s number 1 online store for authentic and genuine imported supplements for a reason. We have set the bar high for the weight gainers supplement market in Pakistan.

Our products cutting-edge formulations for weight gain have proved to be the right choice for people wishing to increase mass. Our variety of weight gainer supplements lets you choose the one that works best for you. Weight gainers do not increase body fat abruptly. These supplements are for health conscious users who by partaking in exercise and a healthy diet, gradually build up body mass converting your body into a sculpted muscled machine if desired. To make that vision true we import the best bodybuilding supplements from certified vendors around the world.

How Do Weight Gainer Supplements Work?

FitFlex’s weight gain supplements contain a healthy blend of proteins and carbohydrates as the primary source to effectively bulk up your body mass without compromising your internal systems. Your muscle rebuilding regime works best if you use these supplements daily. Your weight gainer supplements satisfy the body’s need for protein and the carbohydrates in these provide muscle-building nutrients to the body. Some of our products also contain flax seeds and other fatty acids that boost up the overall process of increasing mass. Both proteins and carbohydrates synergize to function as a healthy weight gain mechanism.

Benefits of Weight Gain Supplements

FitFlex products are the first choice of sportsmen and bodybuilders the world over due to the myriad advantages that these weight gain supplements provide. Even if your focus remains steadily on increasing your mass, our products are taking care of your overall health and well-being as much as comprehensively possible.

Our weight gain supplements fulfil the extreme calorie needs of the aggregated body mass. If you are one of those who find it difficult to gain weight, and even forcing yourself to eat more than ever, changes nothing, FitFlex weight gain supplements can help you speed up the mass building process.

Our supplements boost your workout performance by increasing stamina and making you active. They also prevent muscle cramps that normally result from strenuous exercise and help your tired body to replenish and recover after workouts.

Quality Assurance

As the best weight gainer supplement provider in Pakistan our products are guaranteed to be the best. Purchasing from FitFlex means you can have blind faith in the safety, performance, and price of all the weight gainers. We bring you in shape by maintaining the health standards of your body.

Why Choose Us

Our 100% authentic, imported products have valid expiration dates and printed batch numbers that can be easily verified by manufacturers abroad. We deal directly with manufacturers and associated vendors so that we can easily offer a 100% money-back guarantee if you think and prove that a product isn’t 100% genuine.

If you have any questions or suggestions to update our list of weight gain supplements in Pakistan, reach out to us via email or contact number, and we will indeed consider your words.

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TRUE-MASS® 1200 contains our distinctive ultra-premium protein mix, which provides vital protein building blocks to an athlete’s muscles. The specific carbohydrate blend helps the body prepare for and recover from intensive training by providing the caloric support required by physical effort. Carbohydrates and lipids provide fuel to meet the energy demands of severe athletes. All of these high-quality components are combined with our proprietary flavor technology to create one of the most delectable mass-gaining shakes on the market.


 8,650.00 13,500.00


 8,650.00 13,500.00

Up Your Mass XXXL 1350 contains 50g of a five-protein …



Made for strong gainers that want to build serious MASS …

Dynamik Prey Mass Builder

DYNAMIK Prey Mass 
Prey Mass is a lean whey protein powder that is high in carbohydrates and calories that is perfect for those who want to increase their protein and calorie intake that is considered vital for muscle growth. Prey Mass contains 40g of protein per serving.
DYNAMIK Prey Mass Features:
  • High in carbohydrates and calories
  • 50g of protein per serving
  • Can be used as a meal replacement
  • Helps to build muscle

MT Mass Tech Extreme 2000



MASS-TECH EXTREME 2000 contains only high-quality milk-derived protein sources with the highest biological value. The competition uses proteins with a lower biological value including egg protein.

MASS-TECH EXTREME 2000 supplies over 400g of carbohydrates derived from multiple sources including oat bran and isomaltulose. The competition uses only maltodextrin!

*Note: This product is in limited stock*

Muscle Meds Carnivor Mass


MuscleMeds Carnivor 

Carnivor Mass is called by some “an anabolic superfood” and is more advanced than the typical mass gainer. It combines pure hydrolyzed beef protein isolate (BPI) with a dual-action insulin signal amplifying technology known as iSpike™.

  • 720 Muscle-Building Calories
  • 50g Hydrolyzed Beef Protein Isolate
  • 125g High Impact Reactive Carbs
  • Insulin Amplification and Signaling
  • Loaded with Creatine and BCAAs

Rule1 LBS Mass Gainer


RULE1 LBS Mass Gainer 

The premise for R1 LBS is a simple one: to be BIG, you need to go BIG. With over 1,000 calories, a 200-gram complex carb blend, and 40 grams of protein from three types of whey, R1 LBS is large and in charge. In addition to a 5:1 carb to protein ratio, this calorie-packed formula provides added creatine, MCTs, and glutamine to help you achieve your most SIZEable aspirations.

RULE1 LBS Mass Gainer Features: 

  • Over 1,000 calories!
  • 40 g all-whey protein
  • 200+ g complex carb blend with organic rice bran and Carb 1™
  • 2 g creatine monohydrate
  • 1 g medium-chain triglycerides (MCT)
  • L-glutamine fortified
  • Carefully blended and packaged in a GMP facility in the USA

MuscleTech Mass Tech

MuscleTech Mass Tech
Up to 80g of protein, 156g of carbs, 17g of BCAAs, and 1,000 calories for the ultimate weight gainer for hard gainers.
Mass-Tech Elite is a loaded mass gainer formula designed for superior muscle building growth with 10g of creatine and a full BCAA complex to give those working hard to build muscle the critical macros they need.

Universal Nutrition Gain Fast


Universal Nutrition Gain Fast 

Gain Fast ™ from Universal is powerful and massive anabolic weight gaining formula. Gain Fast™ is protein-rich, complex carbohydrate-dense, and packed with advanced anabolic gaining agents, all designed to help target the cellular growth areas of your body. The exclusive “Get Big Quick” Formula lets you exceed the weight gaining barriers by fueling your body with an incredible 3100+ quality calories.

Universal Nutrition Gain Fast Features:
  • Delicious Taste
  • Engineered for Maximum Gains in Mass & Size
  • High in Protein & Complex Carbs

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