Last Updated: Monday 26th October 2026

What Are Amino Acids?

Amino acids are the building blocks of protein. There are 20 amino acids used to make protein, and 9 of these are called essential amino acids (EAAs) because the body can't make them, so they need to come from food. The other 11 are non-essential amino acids, which the body can make itself. Some, such as glutamine, are known as conditionally essential.

Amino acid supplements provide specific amino acids in a measured serve, usually as a flavoured powder you mix with water, or as capsules and unflavoured powders. At Nutrition Warehouse, we stock amino acid supplements from Genetix Nutrition, Optimum Nutrition, Xtend, EHP Labs, Switch Nutrition, Anabolix Nutrition and more. Want to see which ones customers rate highest? Check out our Top 10 Amino Acids.

Types of Amino Acid Supplements

Amino acid supplements fall into four main groups. Here's how they compare:

Formulas vary by product, so always check the label for the amino acids and amounts in each serve.

BCAAs vs EAAs: What's the Difference?

BCAAs (branched-chain amino acids) are 3 of the 9 essential amino acids: leucine, isoleucine and valine. EAA supplements contain all 9 essential amino acids, including the 3 BCAAs. Many BCAA products list a 2:1:1 ratio, meaning twice as much leucine as isoleucine and valine.

• Choose an EAA if you want all 9 essential amino acids in one serve.
• Choose a BCAA if you specifically want leucine, isoleucine and valine, often in a flavoured drink to sip while training.

Some products combine both, so check the label to see exactly what's in each scoop.

Popular Single Amino Acids

• Glutamine: a conditionally essential amino acid, usually sold as an unflavoured powder
• Beta-alanine: a common pre-workout ingredient, also sold on its own as a powder
• Citrulline: available as L-citrulline or citrulline malate, and often found in pump pre-workouts
• L-carnitine: a compound made from amino acids, sold as capsules, powders and liquids
• Taurine: an amino acid also found in many energy drinks
• L-theanine: an amino acid found in tea leaves

We also stock glycine, tyrosine, arginine and D-aspartic acid (DAA) in our single amino acids range.

Shop Amino Acids by Format

• Flavoured powders: the most popular format. Mix with water and sip before, during or after training. Many are sold as intra-workout drinks.
• Unflavoured powders: pure single amino acids you can add to a protein shake or other drink.
• Capsules and tablets: a measured serve with no mixing.
• Energy aminos: amino blends with added caffeine.

How to Choose the Right Amino Acid Supplement

1. Type: EAAs for all 9 essential amino acids, BCAAs for leucine, isoleucine and valine, or a single amino acid if you want one specific ingredient.
2. Amount per serve: compare the grams of EAAs or BCAAs in a full serve, not the total scoop weight.
3. Added ingredients: check for caffeine, electrolytes or other extras, especially if you already take a pre-workout.
4. Flavour or unflavoured: flavoured to drink on their own, or unflavoured to add to other drinks.
5. Dietary needs: check the label if you need a vegan or sugar-free product.
6. Testing: if you compete in tested sport, look for a product that's batch tested for banned substances.
7. Cost per serve: compare the number of serves per tub, not just the price.

How to Take Amino Acids

Always follow the serving size and directions on your product label. Most amino acid powders are mixed with water and sipped before, during or after training, or through the day. If your amino acid supplement contains caffeine, count it alongside any pre-workout, coffee or energy drinks you have that day. Amino acid supplements are not a replacement for a balanced diet. If you have a medical condition or take medication, speak to your healthcare professional before use.

Shop Popular Amino Acid Supplements

• Revive by Genetix Nutrition: 8g BCAAs (2:1:1) per serve with glutamine, citrulline and electrolytes, sugar free
• Essential Amin.O. Energy by Optimum Nutrition: an amino blend with naturally derived caffeine
• Xtend Original by Xtend: 7g BCAAs (2:1:1) per scoop with electrolytes, sugar free
• Fuel3d by Anabolix Nutrition: an EAA and BCAA formula for before or during training
• Amino Switch by Switch Nutrition: a vegan-friendly blend with all 9 EAAs
• Minos by PharmaLabs: an EAA and BCAA blend
• Beyond BCAA by EHP Labs: BCAAs and EAAs in a flavoured powder
• 100% Pure Glutamine by Genetix Nutrition Essentials: 3g L-glutamine per serve, single ingredient

Looking for Tested Amino Acids?

If you compete in drug-tested sport, choose a product that's been batch tested for banned substances, such as Amino+ by ATP Science (HASTA certified). You can also browse all HASTA certified supplements.

What to Pair with Amino Acids

• Protein powder: an easy way to add protein to your day
• Pre-workout: check both labels for caffeine and shared ingredients such as citrulline
• Hydration formulas: electrolyte drinks for long sessions
• Creatine: unflavoured creatine can be mixed into your amino drink

Why Buy Amino Acids from Nutrition Warehouse?

• Amino acid 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 and return it if you're not satisfied