Top 10 Mass Gainers

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Reviewed by Louisa Giampaolo, Dietitian, on 24 June 2026

Best Mass Gainer in Australia: Our Top 10

Looking for the best mass gainer? This is our top 10 - a curated, dietitian-reviewed shortlist of the high-calorie gainers we stock, from big-calorie classics to leaner everyday options. If eating enough to grow is your bottleneck, a mass gainer makes hitting a calorie surplus easy, packing calories, protein and carbohydrate into one convenient shake. Below is what is in our top 10 right now.

How We Rank Our Top 10

  • Calories and macros - the right balance of calories, protein and carbohydrate for your goal.
  • Protein quality - how much protein per serve, and from what source.
  • Ingredients - we favour clean formulas without unnecessary fillers.
  • Taste and mixability - a big shake is only useful if you will actually finish it.
  • Value - calories and protein per dollar, not just the sticker price.

Our Top 10 Mass Gainers

Here is what made the list, across high-calorie, lean and plant-based options.

1. Post Mass - Emrald Labs

Emrald Labs' Post Mass is an Australian-made gainer built to pack quality calories, protein and carbohydrate into one easy shake. A hugely popular all-rounder for adding size, it is our standout pick for most people chasing a clean calorie surplus.

2. Serious Mass - Optimum Nutrition

Optimum Nutrition's Serious Mass is the classic high-calorie gainer, delivering a big hit of calories, protein and carbohydrate in a single serve. It is the go-to when you genuinely struggle to eat enough to grow.

3. Absolute Mass - Max's

Max's Absolute Mass is an Aussie-made, high-calorie gainer designed for serious size, pairing plenty of protein with carbohydrate to fuel hard training and recovery.

4. Lean Gainer - Emrald Labs

Emrald Labs' Lean Gainer is the leaner option - quality calories with a more moderate carbohydrate load, for adding size with less of the extra. Ideal if you want to gain steadily rather than all at once.

5. Gold Standard Pro Gainer - Optimum Nutrition

ON's Gold Standard Pro Gainer is a higher-protein, lower-sugar take on the gainer - more protein per serve and fewer simple carbs, for a cleaner approach to putting on size.

6. R1 Mass Gainer - Rule 1

Rule 1's R1 Mass Gainer keeps it clean - quality protein and carbohydrate without unnecessary fillers, at strong value. A reliable, no-nonsense gainer.

7. Extreme Mass - International Protein

International Protein's Extreme Mass is an Australian-made, seriously high-calorie gainer built for hard gainers who need maximum energy to put on size.

8. R1 Clean Gainer - Rule 1

Rule 1's R1 Clean Gainer is a leaner, cleaner gainer - a more moderate calorie and carbohydrate profile for those who want to add size without overdoing it.

9. Greed Mass Gainer - Elite Supplements

Our own Greed Mass Gainer delivers big, great-value calories and protein for adding size - a popular house option that does the job without the premium price.

10. Natural Mass 2.0 - Prana

Prana's Natural Mass 2.0 is a natural, plant-based gainer for those who want to add size on a vegan or cleaner-label diet, pairing plant protein with wholefood carbohydrate.

How to Choose the Right Mass Gainer

Match the gainer to your goal and appetite. Struggling to eat enough at all? A high-calorie gainer like Serious Mass, Absolute Mass or Extreme Mass. Want to gain more steadily with less sugar? A leaner option like Lean Gainer, Gold Standard Pro Gainer or R1 Clean Gainer. Plant-based? Natural Mass 2.0. Remember a gainer adds calories - pair it with resistance training and a sensible surplus to gain muscle rather than just fat, and match the serve to your needs. Our certified nutritionists can help.

Why Buy from Elite Supps

  • Every member of our team, online and in all our stores, is a certified nutritionist, so expert advice is always free.
  • A specialist range of mass and weight gainers from trusted Australian and global brands.
  • More than 140 stores nationwide, plus fast online delivery and same-day dispatch.
  • Family-owned, with competitive prices and regular deals.
  • Flat-rate shipping Australia-wide, and free delivery on orders over $150.
  • A 30-day money-back guarantee on your order.

Explore More

Browse all mass gainers, compare whey protein, or see our top 10 protein powders. Our certified nutritionists can help. References for the research cited above are listed below.

FAQ

Do mass gainers actually work?

Yes, when used as intended. A mass gainer makes it easier to reach a calorie surplus - the key requirement for gaining weight and building muscle - by packing calories, protein and carbohydrate into a convenient shake. Paired with resistance training and a sensible surplus, those calories go toward muscle rather than just fat.

Is a mass gainer good for skinny guys and hard gainers?

They suit hard gainers especially - people with fast metabolisms or small appetites who find it hard to eat enough to grow. If you already gain steadily on whole foods, a regular protein may be all you need; a gainer is for when extra calories are the bottleneck.

Can I drink a mass gainer every day?

Yes, as part of a balanced diet and training routine. Have a serve between meals or after training to add calories without a big meal. Match the serving size to your calorie goal and appetite, and use it alongside whole foods, not instead of them.

Will a mass gainer make me fat?

It adds calories, so pair it with resistance training and a sensible surplus to gain muscle rather than excess fat. Adjust the serve to your needs - a smaller serve for a lean gain, a full serve when you really need the calories.

Mass gainer or whey protein - which should I use?

Whey tops up protein with few extra calories; a mass gainer adds significant calories and carbohydrate. Choose a gainer if eating enough to grow is your main challenge, and a whey protein if you just need more protein.

When should I take a mass gainer?

Between meals or after training works well - after a workout it helps refuel, and between meals it tops up calories without a full meal. Timing matters far less than hitting your total daily calories and protein.

References

This page is general information only and is not a substitute for personalised advice from your healthcare professional. Selected references:

  • Howell S, Kones R. "Calories in, calories out" and macronutrient intake: the hope, hype, and science of calories. American Journal of Physiology - Endocrinology and Metabolism. 2017. View source
  • Pasiakos SM, McLellan TM, Lieberman HR. The effects of protein supplements on muscle mass, strength, and aerobic and anaerobic power. Sports Medicine. 2015. View source
  • Naclerio F, Larumbe-Zabala E. Effects of whey protein alone or as part of a multi-ingredient formulation on strength, fat-free mass or lean body mass. Sports Medicine. 2016. View source
  • Jager R, et al. International Society of Sports Nutrition Position Stand: protein and exercise. Journal of the International Society of Sports Nutrition. 2017. View source