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Q: Which type of protein supplement should I choose?

It depends on how you'll use it. Protein powder usually costs the least per serve, ready-to-drink shakes need no mixing, and protein bars and snacks are the easiest to carry. Many people use more than one.

Q: What is the difference between whey and plant-based protein?

Whey protein is made from milk. Plant-based protein is made from sources such as pea and rice, so it suits vegan and dairy-free diets. Both add protein to your day, so check the label for protein per serve and allergens.

Q: What is the difference between whey protein and whey protein isolate?

Whey protein isolate (WPI) is whey that has been filtered further to remove more fat and lactose, so it usually has more protein per serve. Whey protein blends mix whey concentrate and isolate.

Q: How much protein do I need a day?

It depends on your age, body weight and activity level. The Australian Nutrient Reference Values set a recommended daily protein intake for adults, and active people may need more. A dietitian can help you work out your needs.

Q: When should I have a protein supplement?

Protein supplements can be had at any time of day, such as after training, with breakfast or between meals. Follow the directions on the label.

Q: Can a protein shake replace a meal?

A standard protein shake is designed to add protein, not replace a meal. If you want a shake to replace a meal, choose a meal replacement shake, which includes carbohydrates, fats, vitamins and minerals.

Q: Are there protein supplements for drug-tested athletes?

Yes. HASTA-certified protein powders are batch tested for banned substances, which suits athletes in drug-tested sport. Browse our HASTA protein powder range.

Q: Are there lactose-free or dairy-free protein options?

Yes. Plant-based protein powders are dairy free, and whey protein isolate is lower in lactose than whey concentrate. Always check the label if you have an allergy or intolerance.

Q: Can I use different protein supplements together?

Yes. Many people use a protein powder at home and keep ready-to-drink shakes or protein bars for busy days. Check the labels so you know your total protein from all sources.

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Protein Supplements Buying Guide

Shop protein supplements from Genetix Nutrition, Optimum Nutrition, Rule 1 Proteins, Anabolix Nutrition and EHP Labs, including protein powder, RTD shakes, bars and snacks.

Last Updated: Wednesday 28th October 2026

What Are Protein Supplements?

Protein supplements are foods and drinks that make it easier to add protein to your day. They include protein powders, ready-to-drink protein shakes, protein water, protein bars, cookies and snacks, and baking mixes. Many people use them alongside a balanced diet to help reach their daily protein target, especially when time is short.

At Nutrition Warehouse, we stock over 790 protein supplements from Genetix Nutrition, Optimum Nutrition, Rule 1 Proteins, Anabolix Nutrition, EHP Labs, bRaw and more. Want to see which protein powders customers rate highest? Check out our Top 10 Protein Powders.

Types of Protein Supplements

Protein comes in a range of formats. Here's how they compare:

Format	What it is	Suits
Protein powder	A powder you mix with water or milk	Daily shakes, smoothies and adjustable serves
Protein drinks (RTD)	Pre-mixed protein shakes in a bottle or can	No mixing, on the go
Protein water	Clear protein powders that mix into a light, juice-style drink	A lighter alternative to a milky shake
Protein bars, cookies and snacks	Bars, cookies, chips and other high-protein snacks	Grab-and-go snacking
Protein baking mixes	Pancake, muffin and baking mixes with added protein	Breakfasts and home baking
Mass gainers	High-calorie powders with protein and carbohydrates	Adding extra calories as well as protein
Meal replacement shakes	Shakes with protein, carbohydrates, fats, vitamins and minerals	Replacing a meal rather than adding protein

Types of Protein Powder

Whey protein: made from milk, and the most popular type of protein powder
Whey protein isolate (WPI): whey filtered to remove more fat and lactose
Whey protein blends: a mix of whey concentrate and isolate
Hydrolysed whey: whey that has been partly broken down
Plant-based protein: dairy-free powders made from pea, rice and other plant proteins
Casein protein: a slower-digesting milk protein
Collagen protein: protein powders made with collagen

Protein Powder vs Protein Drinks vs Protein Bars

All three add protein to your day, so the choice usually comes down to convenience and cost. Protein powder usually costs the least per serve and lets you adjust the serve size. Ready-to-drink shakes need no mixing, and protein bars are the easiest to carry. Many people keep powder at home and RTDs or bars for busy days.

How to Choose the Right Protein Supplement

Format: choose a powder, drink, bar or snack based on when and where you'll have it.
Protein per serve: check the grams of protein on the nutrition panel.
Calories, carbs and sugar: compare these if you want a lower-calorie option or a higher-calorie option such as a mass gainer.
Dietary needs: choose plant-based or whey isolate options if you avoid dairy or lactose, and check labels for allergens.
Value: compare cost per serve, as larger tubs and boxes usually cost less per serve.

Shop Protein by Need

Weight loss protein: lower-calorie protein powders
Women's protein powder: protein powders made for women
HASTA protein powder: protein powders tested for banned substances, for drug-tested athletes
Protein stacks: protein bundled with other supplements

Shop Popular Protein Supplements

Lean Whey by Genetix Nutrition: a whey protein blend in a wide range of flavours
Gold Standard 100% Whey by Optimum Nutrition: a whey protein blend
Lean WPI by Genetix Nutrition: a whey protein isolate
Ultimate Plant Protein by bRaw: a plant-based protein powder
OxyShred Lean Protein RTD by EHP Labs: a ready-to-drink protein shake
Cold Pressed Protein Bar by Fibre Boost: a high-protein snack bar

Need something to mix your shakes in? Shop our protein shakers.

Why Buy Protein Supplements from Nutrition Warehouse?

Over 790 protein supplements from trusted brands, all in one place
Expert advice in-store and online across 120+ locations
Click & Collect available same day
SameDaySupps delivery in select metro areas
Free shipping over $150
Best Price Guarantee: we'll beat any competitor by $1 and throw in a free shaker
5 Scoop Guarantee: try up to five scoops of protein powder and return it if you're not satisfied

What are protein supplements?

Which type of protein supplement should I choose?

What is the difference between whey and plant-based protein?

What is the difference between whey protein and whey protein isolate?

How much protein do I need a day?

When should I have a protein supplement?

Can a protein shake replace a meal?

Are there protein supplements for drug-tested athletes?

Are there lactose-free or dairy-free protein options?

Can I use different protein supplements together?

Where can I buy protein supplements in Australia?

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Protein Supplements Buying Guide

What Are Protein Supplements?

Types of Protein Supplements

Types of Protein Powder

Protein Powder vs Protein Drinks vs Protein Bars

How to Choose the Right Protein Supplement

Shop Protein by Need

Shop Popular Protein Supplements

Why Buy Protein Supplements from Nutrition Warehouse?

Frequently Asked Questions

What are protein supplements?

Which type of protein supplement should I choose?

What is the difference between whey and plant-based protein?

What is the difference between whey protein and whey protein isolate?

How much protein do I need a day?

When should I have a protein supplement?

Can a protein shake replace a meal?

Are there protein supplements for drug-tested athletes?

Are there lactose-free or dairy-free protein options?

Can I use different protein supplements together?

Where can I buy protein supplements in Australia?

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Results for ${searchQuery}

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Recent Searches

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${isZeroState ? 'Best Selling Products' : 'Products'}

${collectionTitle} (${response?.total_num_results || 0})

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Protein Supplements Buying Guide

What Are Protein Supplements?

Types of Protein Supplements

Types of Protein Powder

Protein Powder vs Protein Drinks vs Protein Bars

How to Choose the Right Protein Supplement

Shop Protein by Need

Shop Popular Protein Supplements

Why Buy Protein Supplements from Nutrition Warehouse?

Frequently Asked Questions

What are protein supplements?

Which type of protein supplement should I choose?

What is the difference between whey and plant-based protein?

What is the difference between whey protein and whey protein isolate?

How much protein do I need a day?

When should I have a protein supplement?

Can a protein shake replace a meal?

Are there protein supplements for drug-tested athletes?

Are there lactose-free or dairy-free protein options?

Can I use different protein supplements together?

Where can I buy protein supplements in Australia?

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