This store requires javascript to be enabled for some features to work correctly.

Weight Gain Proteins

Select options

Max's

Clean Mass

From $109.95

From $109.95 ~~$109.95~~

Gold Standard Pro Gainer by Optimum Nutrition | Base Nutrition

Select options

Optimum Nutrition

Gold Standard Pro Gainer by Optimum Nutrition

From $153.95

From $153.95 ~~$153.95~~

Select options

Max's

Super Size by Max's

From $59.95

From $59.95 ~~$59.95~~

Serious Mass by Optimum Nutrition | Base Nutrition

Select options

Optimum Nutrition

Serious Mass by Optimum Nutrition

From $99.95

From $99.95 ~~$99.95~~

Select options

Rule One

Clean Gainer

$184.95

$184.95 ~~$184.95~~

Select options

Max's

Absolute Mass

From $84.95

From $84.95 ~~$84.95~~

Select options

Body Science

Nitrovol Mass Gainer

$79.95

$79.95 ~~$79.95~~

WHAT YOU NEED TO KNOW ABOUT Weight Gain Proteins

WHAT ARE WEIGHT GAINER PROTEINS?

Weight gainer proteins are high-calorie supplements designed to help increase total daily energy intake, supporting weight gain, muscle growth, and recovery.

They combine protein, carbohydrates, and fats into a single shake, making it easier to consume the calories required for a calorie surplus.

The goal is simple: help you eat more consistently.

WHY IS IT HARD TO GAIN WEIGHT?

Weight gain requires a sustained calorie surplus - but many people struggle to consistently eat enough to achieve it.

High metabolism or energy output
Low appetite or early satiety
Busy schedules limiting meal frequency
Training demands increasing calorie requirements

When calorie intake falls short, progress slows, regardless of training effort.

HOW DO WEIGHT GAINERS SUPPORT MUSCLE GROWTH?

Muscle growth is driven by two key factors: training stimulus and adequate nutrition.

Weight gainers support the nutrition side by making it easier to maintain a calorie surplus.

Provide a high-calorie intake in a convenient format
Supply protein to support muscle repair and growth
Deliver carbohydrates to support training performance and recovery
Help maintain consistent energy intake across the day

Without sufficient calories, muscle growth is limited.

WHAT’S IN A WEIGHT GAINER?

Weight gainers are built around three core macronutrients:

Protein: supports muscle repair and growth
Carbohydrates: provide energy and support glycogen replenishment
Fats: increase calorie density and support overall intake

The ratio of these nutrients will vary depending on the product and intended use.

WHEN SHOULD YOU USE A WEIGHT GAINER?

Weight gainers are best used when you need to increase calorie intake without adding more whole meals.

Post-workout to support recovery and calorie intake
Between meals to increase total daily calories
As an additional shake when food intake isn’t enough
During high-volume training phases

Total daily intake matters more than timing.

WHO SHOULD USE WEIGHT GAINERS?

This category is best suited to people who:

Struggle to gain weight or muscle
Have a high metabolism or energy output
Find it difficult to eat enough food consistently
Are in a structured muscle-building phase

HOW IS THIS DIFFERENT FROM PROTEIN POWDER?

The key difference is calorie content.

Protein Powder: focused on protein intake with lower calories
Weight Gainers: designed to increase total calorie intake

If you’re not gaining weight, calories (not just protein) are usually the limiting factor.

FOOD VS WEIGHT GAINERS

Whole food should always form the foundation of your nutrition.

Food: more nutrient-dense and filling
Weight Gainers: convenient way to increase calorie intake

Weight gainers are best used to supplement your diet, not replace it.

NEED HELP CHOOSING?

At Base Nutrition, we stock a curated range of Weight Gainers designed to support calorie intake, recovery, and muscle growth.

If you’re unsure where to start, explore Protein Powders or browse our Top 10 Protein Powders for a simple comparison.

WHY SHOP WEIGHT GAIN PROTEINS AT BASE NUTRITION?

Massive Range: a curated selection across leading brands and formats to suit every goal.
Expert Advice: guidance tailored to your goals, experience, and training style.
Free Local Delivery: fast, convenient delivery across Perth metro.
Click & Collect: order online and collect in-store when it suits you.
Express Delivery Australia-Wide: fast shipping, free over $120.
Base Rewards: earn more back every time you shop with us.
100% Satisfaction Guarantee: if something’s not right, we’ll make it right.

FREQUENTLY ASKED QUESTIONS

WILL A WEIGHT GAINER MAKE ME GAIN FAT?

Only if your calorie surplus is too high.

Weight gainers increase calorie intake - so results depend on how they fit into your overall diet and training.

A controlled surplus supports muscle growth. An excessive surplus can lead to fat gain.

DO I NEED A WEIGHT GAINER OR JUST MORE FOOD?

Whole foods should always form the foundation of your nutrition - but weight gainers make it significantly easier to consistently hit your calorie targets.

For many people, eating enough food every day becomes impractical due to appetite, time, or routine. Weight gainers provide a simple, efficient way to increase calorie intake without needing to add multiple extra meals.

They’re not a replacement for food, they’re a tool to help you execute your plan more consistently.

WHEN SHOULD I TAKE A WEIGHT GAINER?

Anytime you need to increase calorie intake.

Commonly used post-workout or between meals, but total daily calories matter more than timing.

Our suggestion is you consume the weight gainer shake as the last thing before you end your day (after dinner). The rationale: It's easier to drink a shake after a meal, rather than attempting to eat a meal after having had a weight gainer shake.

CAN I BUILD MUSCLE WITHOUT A WEIGHT GAINER?

It's possible. Muscle growth comes from training and a calorie surplus - not the supplement independently by itself.

However, weight gainers simply make it easier to achieve that surplus consistently over time.

HOW MANY CALORIES SHOULD A WEIGHT GAINER HAVE?

It depends on your needs.

Some people require an extra 300–500 calories, while others may need significantly more.

The right choice is based on how much you need to increase your daily intake.

We typically suggest starting on a lower calorie gainer and gradually increasing until you reach your goal weight.