Every mass gainer promises size, but they are built very differently. Some pack well over 1,000 calories into a single shake for hardgainers who cannot eat enough. Others keep calories moderate for a cleaner bulk. Some taste like a chocolate milkshake; others are an acquired taste. The best mass gainer in Pakistan is simply the one that fits your calorie gap, your stomach and your goal.

This guide compares five of the most popular mass gainers in Pakistan on calories, protein, serving size, taste, value and who each one suits, then gives you a clear pick for every type of buyer.

Quick Picks: Best Mass Gainer for Each Goal

Best middle ground on calories and taste: Labrada Muscle Mass Gainer

Best overall: Optimum Nutrition Serious Mass, the most established high-calorie gainer

Best for extreme hardgainers: Russian Bear 10000, the highest calories per serving on this list

Best value per kg: Applied Nutrition Critical Mass 6kg

Best for a controlled bulk: Kevin Levrone Anabolic Mass or Applied Nutrition Critical Mass, at around 700 to 750 calories

Mass Gainer Comparison Table

Sorted by calories per serving. Price shown as one factor; tub sizes differ, so compare on price per kg. Check each label for the exact serving.

How We Compared These Mass Gainers

• Calories per serving: how big a calorie gap one shake can close.
• Protein per serving and protein share: how much of those calories come from protein (protein grams x 4 divided by calories).
• Serving size: large servings mean more calories but a heavier shake and fewer servings per tub.
• Taste and mixability: you will drink it daily for weeks, so it has to go down easily.
• Value: price per kg, because the tubs range from 2.7kg to 6.8kg and headline prices are not comparable.
• Suitability: who each gainer is actually built for.

The 5 Best Mass Gainers in Pakistan Reviewed

1. Optimum Nutrition Serious Mass: best overall

Serious Mass is the benchmark high-calorie gainer. A full 334g serving gives around 1,250 calories and 50g of protein, and ON adds creatine, glutamine and vitamins and minerals to the formula. The chocolate flavour is a popular choice and mixes well with milk or water.

Why pick it: proven formula, very high calories, good taste. Trade-off: a 6lb tub holds only about 8 full servings, so it runs out fast at a daily serving; the 12lb bag suits a longer bulk. Protein is only about 16% of the calories, so it is a calorie tool first.

5. Kevin Levrone Anabolic Mass: best multi-protein formula

Anabolic Mass uses a blend of whey concentrate, whey isolate, hydrolysed whey and micellar casein, so protein is released over a longer period than a single-source gainer. At around 700 calories per serving it suits a more controlled bulk, and its taste is clean rather than very sweet. Read our full Kevin Levrone Anabolic Mass review for more.

Why pick it: varied protein blend, moderate calories. Trade-off: the 3kg tub costs more per kg than the larger options here; a 7kg size is also available.

2. Russian Bear 10000: best high-calorie mass gainer for extreme hardgainers

Russian Bear 10000 is built for people who genuinely cannot eat enough, with up to 1,860 calories and 50g of protein per serving. It comes in a large 15lb bag and is the cheapest per kg of the high-calorie options here.

Why pick it: the biggest calorie hit on this list, good value per kg. Trade-off: at around 11% of calories from protein it is very carbohydrate-heavy, which makes fat gain more likely if you overshoot. Most users will not need a full serving. Our Russian Bear 10000 guide covers it in more depth.

4. Applied Nutrition Critical Mass: best value per kg

UK brand Applied Nutrition’s Critical Mass sits at a more moderate 750 or so calories per serving and uses complex carbohydrates including waxy maize starch. The 6kg tub is by far the cheapest per kg on this list, and a 2.4kg size is available if you want to try it first.

Why pick it: strong value, moderate calories that suit beginners and leaner bulks. Trade-off: not enough calories per serving for the hardest gainers without a second shake.

3. Labrada Muscle Mass Gainer: best middle ground

From the brand founded by IFBB Hall of Fame bodybuilder Lee Labrada, Muscle Mass Gainer gives about 1,000 calories and 52g of protein per serving. That is a higher protein share than Serious Mass, at around 21% of calories, while still delivering a substantial calorie surplus. Its chocolate flavour is a popular pick for a smooth, non-gritty shake.

Why pick it: high calories with a bit more protein balance. Trade-off: a 6lb tub, so frequent reorders during a full bulk.

Best Mass Gainer for Hardgainers vs Best for a Lean Bulk

Not sure whether you need a high-calorie gainer at all? Our guide to weight gainer vs mass gainer explains the difference, and best supplements for hardgainers covers what else helps.

How to Choose the Right Mass Gainer

1. Work out your calorie gap. If you are only 400 to 500 calories short a day, a moderate gainer or half a serving of a high-calorie one is enough. Bigger is not better if it overshoots.
2. Check the protein share. If your diet is already high in protein, a carb-heavy gainer is fine. If not, choose one where protein makes up more of the calories.
3. Think about your stomach. Very large servings can cause bloating. Start with half a serving for the first week.
4. Pick a flavour you will actually finish. Chocolate is the safest first choice for most people.
5. Compare value on price per kg, then choose the tub size. Our 1kg vs 5kg weight gainer guide explains when a big bag pays off.

Getting Results From Any Mass Gainer

• Train with weights. Without resistance training, extra calories are more likely to be stored as fat.
• Keep eating real food. Rice, eggs, chicken, daal and dairy remain the base; the shake fills the gap.
• Mix with milk for more calories, water for fewer. A glass of full-fat milk adds roughly 150 calories.
• Take it when it fits. After training or between meals both work; consistency matters more than timing. See how to use a mass gainer.

Buy Genuine Mass Gainers From SportsOne

Popular gainers are often counterfeited, so buy from an authorised seller and check the seal and batch details. SportsOne International has been an authorised importer and distributor of sports nutrition in Pakistan since 2002, with nationwide Cash on Delivery, WhatsApp ordering and stores in Karachi, Lahore, Islamabad and Gujranwala.

Want to see every gainer we stock? Browse the full weight gainer range with current prices..

Frequently Asked Questions  Mass Gainer in Pakistan 2026