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Q: What is the difference between single amino acids and BCAAs or EAAs?

Single amino acids contain one amino acid. BCAAs contain three essential amino acids (leucine, isoleucine and valine), and EAAs contain all nine essential amino acids.

Q: Why choose a single amino acid instead of a blend?

A single amino acid lets you choose exactly which ingredient you take and how much. It suits people who build their own stack or want to add one ingredient to a product they already use.

Q: Are single amino acids the same as protein powder?

No. Protein powder contains whole protein, which is made up of many amino acids. A single amino acid supplement contains just one amino acid, usually in a small serve measured in grams or milligrams.

Q: Which single amino acids do you stock?

Our range includes glutamine, citrulline, beta-alanine, taurine, glycine, tyrosine, arginine, L-theanine, D-aspartic acid, L-leucine and L-lysine, plus amino acid compounds such as L-carnitine, acetyl L-carnitine, NAC and TMG.

Q: Are single amino acids flavoured?

Most single amino acid powders are unflavoured, so they can be added to other drinks. Some have a slight taste, such as glycine, which is naturally sweet. A few, like some acetyl L-carnitine powders, also come in flavours.

Q: Are single amino acids vegan?

Some single amino acids are made by fermentation and labelled vegan friendly, but this varies between products. Check the label if you need a vegan product.

Q: Where can I buy single amino acids in Australia?

You can buy single amino acids online at Nutrition Warehouse with free shipping over $150, or in-store at over 120 locations with same-day Click & Collect.

Carnitine

Glutamine

Citrulline

Beta Alanine

Taurine

Arginine

Tyrosine

Glycine

Theanine

DAA

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Carnitine

Glutamine

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Taurine

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Single Amino Acids Buying Guide

Shop single amino acids including glutamine, citrulline, beta-alanine and taurine from Genetix Nutrition, Switch Nutrition, ATP Science and Gen-Tec Nutrition.

Last Updated: Monday 26th October 2026

What Are Single Amino Acids?

Single amino acids are supplements that contain just one amino acid, such as glutamine, citrulline, beta-alanine or taurine. Most come as an unflavoured powder you can add to water, a protein shake or a pre-workout, or as capsules. Because they contain one ingredient, they're easy to measure and easy to add to the products you already use.

This range also includes compounds made from amino acids, such as L-carnitine, acetyl L-carnitine (ALCAR), NAC and TMG. At Nutrition Warehouse, we stock single amino acids from Genetix Nutrition, Switch Nutrition, ATP Science, Gen-Tec Nutrition and more. They're part of our full amino acid supplements range.

Single Amino Acids Explained

Here's a quick guide to the single amino acids in our range:

Amino acid	What it is	Common format
Glutamine	A conditionally essential amino acid, usually sold as L-glutamine	Unflavoured powder
Citrulline	Sold as L-citrulline or citrulline malate (citrulline bonded with malic acid), and common in pump pre-workouts	Unflavoured powder
Beta-alanine	A non-essential amino acid found in many pre-workouts. Some people notice a tingling feeling after taking it.	Unflavoured powder
L-carnitine	A compound the body makes from the amino acids lysine and methionine	Capsules, powder, liquid
Acetyl L-carnitine (ALCAR)	An acetylated form of L-carnitine	Powder, capsules
Taurine	An amino acid found in meat and fish, and a common energy drink ingredient	Unflavoured powder
Glycine	The smallest amino acid, with a naturally sweet taste	Unflavoured powder
Tyrosine	A non-essential amino acid, usually sold as L-tyrosine	Powder, capsules
Arginine	Sold as L-arginine or arginine AKG (arginine alpha-ketoglutarate)	Powder, capsules
L-theanine	An amino acid found naturally in green and black tea leaves	Capsules
D-aspartic acid (DAA)	A form of the amino acid aspartic acid	Unflavoured powder

We also stock L-leucine (one of the three BCAAs), L-lysine, NAC (N-acetyl cysteine), TMG (trimethylglycine) and 5-HTP. Formulas and serve sizes vary by product, so always check the label.

Single Amino Acids vs Amino Blends

Single amino acids let you choose exactly which amino acid you take and how much, which suits people who build their own stack or want to add one ingredient to a product they already use. If you'd rather have several amino acids in one scoop, look at BCAAs, EAAs or amino blends.

How to Choose a Single Amino Acid

Check what you already take: many pre-workouts and amino drinks already contain citrulline, beta-alanine, taurine or glutamine, so check the label to avoid doubling up.
Form: some amino acids come in more than one form, such as L-citrulline or citrulline malate, and L-carnitine or acetyl L-carnitine.
Amount per serve: compare the milligrams or grams in a full serve, not the scoop size.
Powder or capsules: unflavoured powders are easy to mix and usually cost less per serve, while capsules suit people who don't want to measure.
Cost per serve: pure powders often come in 100 to 250 serve tubs, so compare serves per tub.

How to Take Single Amino Acids

Always follow the serving size and directions on your product label. Most unflavoured amino acid powders can be mixed into water, juice, a protein shake or a pre-workout, and many come with a small scoop for measuring. Single amino acid supplements are not a replacement for a balanced diet. If you have a medical condition, take medication, or are pregnant or breastfeeding, speak to your healthcare professional before use.

Shop Popular Single Amino Acids

100% Pure Glutamine by Genetix Nutrition Essentials: 3g L-glutamine per serve, single ingredient
100% Pure L-Citrulline by Genetix Nutrition Essentials: 3g per serve, 100 serves
100% Pure Beta Alanine by Genetix Nutrition Essentials: 1.2g per serve, in 100g and 300g tubs
100% Pure Acetyl L-Carnitine by Genetix Nutrition Essentials: natural or grape flavour, 33 or 100 serves
100% Pure Glycine by Switch Nutrition: 1g per scoop, 200 serves
100% Pure Taurine by Switch Nutrition: 1g per serve, unflavoured
100% Pure L-Tyrosine by Switch Nutrition: unflavoured powder, 200 serves
L-Theanine by Genetix Nutrition Essentials: 60 capsules

Browse the full range above to compare every amino acid and tub size.

What to Pair with Single Amino Acids

Pre-workout: check the label first, as many already contain citrulline, beta-alanine or taurine
Protein powder: an easy base to mix unflavoured amino acids into
Creatine: another unflavoured powder that's easy to add to the same drink

Why Buy Single Amino Acids from Nutrition Warehouse?

Single amino acids 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

What are single amino acids?

What is the difference between single amino acids and BCAAs or EAAs?

Why choose a single amino acid instead of a blend?

Are single amino acids the same as protein powder?

Which single amino acids do you stock?

Can I mix single amino acids with my pre-workout or protein shake?

Are single amino acids flavoured?

Are single amino acids vegan?

Where can I buy single amino acids in Australia?

Sale Best Seller Best Seller

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Single Amino Acids Buying Guide

What Are Single Amino Acids?

Single Amino Acids Explained

Single Amino Acids vs Amino Blends

How to Choose a Single Amino Acid

How to Take Single Amino Acids

Shop Popular Single Amino Acids

What to Pair with Single Amino Acids

Why Buy Single Amino Acids from Nutrition Warehouse?

Frequently Asked Questions

What are single amino acids?

What is the difference between single amino acids and BCAAs or EAAs?

Why choose a single amino acid instead of a blend?

Are single amino acids the same as protein powder?

Which single amino acids do you stock?

Can I mix single amino acids with my pre-workout or protein shake?

Are single amino acids flavoured?

Are single amino acids vegan?

Where can I buy single amino acids 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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Single Amino Acids Buying Guide

What Are Single Amino Acids?

Single Amino Acids Explained

Single Amino Acids vs Amino Blends

How to Choose a Single Amino Acid

How to Take Single Amino Acids

Shop Popular Single Amino Acids

What to Pair with Single Amino Acids

Why Buy Single Amino Acids from Nutrition Warehouse?

Frequently Asked Questions

What are single amino acids?

What is the difference between single amino acids and BCAAs or EAAs?

Why choose a single amino acid instead of a blend?

Are single amino acids the same as protein powder?

Which single amino acids do you stock?

Can I mix single amino acids with my pre-workout or protein shake?

Are single amino acids flavoured?

Are single amino acids vegan?

Where can I buy single amino acids in Australia?

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Join free.Earn up to 7.5% Store Credit

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