100% Natural Soy Protein Isolate
Bulk Nutrients' Soy Protein Isolate has one of the highest nutritional values available. It's 100% GMO free and contains no cholesterol, saturated fats or sugar.
We deliberately source a soy protein that is not thick and gluggy. So it mixes easily and is great consumed with just water.
Soy Protein Isolate has a great amino acid spread and can be used for building muscle as well as losing weight, or simply substituted for a meal.
Product Description
Easy on the stomach
Vegetable proteins are gentler on the stomach than animal proteins so are suited to people with animal product allergies or sensitivities.
At Bulk Nutrients, we don't add anything to our Soy Protein Isolate that shouldn't be there. That means it's free from any additives, artificial flavourings or sweeteners and is 100% pure.
Suitable for vegetarians and vegans
Our plant-based proteins are flavoured with only completely natural ingredients. We use Monk Fruit and Stevia as a sweetener (of the highest grades available), which flavours the protein while adding no bitterness. What's more it's calorie free! Soy Protein is certified vegan by Vegan Australia.
For our natural flavours we use Natural Cocoa and Natural Chocolate flavouring for Chocolate and Natural Vanilla flavouring for Vanilla. Combined with Stevia and Thaumatin we have developed a great tasting natural product.
Directions / Ingredients
Directions
Soy Protein can be taken with water, juice, smoothies or milks. Generally one scoop is added to 300 - 500mls of liquid. It can also be added to food anytime to boost protein levels.
Serving Size
A typical dose is one flat scoop (30g).
Soy Protein Isolate Ingredients
Vanilla Flavour Soy Protein
Ingredients: Soy Protein Isolate, Natural Flavouring, Natural Sweetener (Stevia, Thaumatin), Xanthan Gum.
Contains: Soy
Chocolate Flavour Soy Protein
Ingredients: Soy Protein Isolate, Cocoa, Natural Flavouring, Natural Sweetener (Stevia, Thaumatin), Xanthan Gum.
Contains: Soy
Raw (Unflavoured) Soy Protein
Ingredients: Soy Protein Isolate.
Contains: Soy
Storage
Keep well sealed, store away from moisture, light and heat.
Further Reading
Vegan vs Omnivore Diet for Muscle Growth and Strength
Plant vs Animal Proteins: What’s the Difference?
The Best Sources of Plant Protein for Vegans
Everything You Need to Know About Plant-Based Diets
The Benefits of Plant-Based Food and Proteins
Vegan Protein Powder vs Whey Protein for Muscle Gains
Product FAQs
How does Soy Protein Isolate taste?
This product is available in flavoured and unflavoured versions and is generally considered to have an average taste.
What is Soy Protein Isolate made from?
Soy Protein Isolate is a protein derived from soy.
How is Soy Protein Isolate packaged?
Soy Protein Isolate is packaged in resealable 1kg pouches.
Is the packaging for Soy Protein Isolate recyclable?
In theory yes, but not in all council areas right now.
The REDcycle program has been discontinued, and the industry is working together to find a solution to continue recycling soft plastics. For now, we recommend checking with your local council, but most require you to put the packaging in your regular landfill bin.
The included scoop can be recycled as hard plastic in your local council pickup.
For more information about what Bulk is doing to improve sustainability, check this article.
Can I receive a discount buying more than one bag of Soy Protein Isolate at once?
Absolutely! Price breaks for Soy Protein Isolate begin when you purchase 2 units of any flavour. Just add more than that to your cart to see the savings.
Recipes
The Recipe Section of the Bulk Nutrients Blog now has over 300 healthy recipes.
Here are some of our favourites that use Soy Protein Isolate:
Lab Results
At Bulk Nutrients, we take our products’ purity very seriously.
To maintain our Soy Protein’s consistent high quality, we send a cross-section of our product range to certified Australian laboratories for testing, such as National Measurement Institute (NMI), Southern Cross University, ARL and Scientest which are all independently verified and NATA/TGA accredited.
The NMI is a laboratory run by the Australian Government, which is used for police forensic testing, SIA - Sports Integrity Australia drug screening and by multinational food manufacturers for quality and safety testing.
NMI has conducted many hundreds of tests on Bulk Nutrients products for more than 10+ years.
Lab testing results for Soy Protein Isolate.
- 25/06/2026 - Soy Protein Isolate - Vanilla
- 24/02/2026 - Soy Protein Isolate - Raw (Unflavoured)
- 10/10/2025 - Soy Protein Isolate - Raw (Unflavoured)
- 10/06/2025 - Soy Protein Isolate - Chocolate
- 07/02/2025 - Soy Protein Isolate - Vanilla
- 24/01/2024 - Soy Protein Isolate - Chocolate
- 24/01/2024 - Soy Protein Isolate - Raw (Unflavoured)
- 24/01/2024 - Soy Protein Isolate - Vanilla
- 18/07/2023 - Soy Protein Isolate - Chocolate
- 18/07/2023 - Soy Protein Isolate - Raw (Unflavoured)
- 18/07/2023 - Soy Protein Isolate - Vanilla
- 25/01/2023 - Soy Protein Isolate - Chocolate
- 25/01/2023 - Soy Protein Isolate - Raw (Unflavoured)
- 25/01/2023 - Soy Protein Isolate - Vanilla
- 08/07/2022 - Soy Protein Isolate - Chocolate
- 08/07/2022 - Soy Protein Isolate - Raw (Unflavoured)
- 08/07/2022 - Soy Protein Isolate - Vanilla
- 22/07/2021 - Soy Protein Isolate - Raw (Unflavoured)
- 22/07/2021 - Soy Protein Isolate - Vanilla
- 29/01/2021 - Soy Protein Isolate - Chocolate
- 29/01/2021 - Soy Protein Isolate - Raw (Unflavoured)
- 29/01/2021 - Soy Protein Isolate - Vanilla
- 12/12/2019 - Soy Protein Isolate - Chocolate
- 12/12/2019 - Soy Protein Isolate - Raw (Unflavoured)
- 12/12/2019 - Soy Protein Isolate - Vanilla
- 23/07/2019 - Soy Protein Isolate - Raw (Unflavoured)
- 23/07/2019 - Soy Protein Isolate - Vanilla
- 11/07/2018 - Soy Protein Isolate - Vanilla
- 04/07/2018 - Soy Protein Isolate - Raw (Unflavoured)
Nutrition Panels
| CHOCOLATE SOY PROTEIN NUTRITION INFORMATION | ||
|---|---|---|
| Servings per 1kg package: 33Servings size: 30g | ||
| Average Quantity Per Serving | Average Quantity Per 100g | |
| Energy (kj) | 452 | 1,506 |
| Protein (g) | 25.4 | 84.6 |
| Fats (g) | 0.6 | 1.9 |
| (saturated) (g) | 0.2 | 0.8 |
| Carbohydrates (g) | 1.7 | 5.7 |
| (sugars) (g) | 0.2 | 0.8 |
| Fibre (g) | 0.5 | 1.5 |
| Sodium (mg) | 284 | 946 |
| VANILLA SOY PROTEIN NUTRITION INFORMATION | ||
|---|---|---|
| Servings per 1kg package: 33Servings size: 30g | ||
| Average Quantity Per Serving | Average Quantity Per 100g | |
| Energy (kj) | 450 | 1,501 |
| Protein (g) | 26.2 | 87.3 |
| Fats (g) | 0.4 | 1.5 |
| (saturated) (g) | 0.1 | 0.5 |
| Carbohydrates (g) | 1.2 | 4.1 |
| (sugars) (g) | 0.3 | 0.9 |
| Fibre (g) | 0.4 | 1.3 |
| Sodium (mg) | 292 | 972 |
| RAW SOY PROTEIN NUTRITION INFORMATION | ||
|---|---|---|
| Servings per 1kg package: 33Servings size: 30g | ||
| Average Quantity Per Serving | Average Quantity Per 100g | |
| Energy (kj) | 452 | 1,506 |
| Protein (g) | 27.0 | 90.0 |
| Fats (g) | 0.5 | 1.5 |
| (saturated) (g) | 0.2 | 0.51 |
| Carbohydrates (g) | 0.5 | 1.8 |
| (sugars) (g) | 0.2 | 0.5 |
| Fibre (g) | 0.4 | 1.3 |
| Sodium (mg) | 300 | 1000 |
| TYPICAL SOY PROTEIN AMINO ACID PROFILE | ||
|---|---|---|
| Servings per 1kg package: 33Servings size: 30g | ||
| Average Quantity Per Serving | Average Quantity Per 100g | |
| Alanine (mg) | 1,260 | 4,200 |
| Arginine (mg) | 2,400 | 8,000 |
| Aspartic Acid (mg) | 3,630 | 12,100 |
| Cysteine (mg) | 420 | 1,400 |
| Glutamine + Glutamic Acid (mg) | 6,120 | 20,400 |
| Glycine (mg) | 1,260 | 4,200 |
| Histidine (mg) | 810 | 2,700 |
| Isoleucine (mg) | 1,290 | 4,300 |
| Leucine (mg) | 2,340 | 7,800 |
| Lysine (mg) | 1,950 | 6,500 |
| Methionine (mg) | 420 | 1,400 |
| Phenylalanine (mg) | 1,620 | 5,400 |
| Proline (mg) | 1,590 | 4,300 |
| Serine (mg) | 1,710 | 5,700 |
| Threonine (mg) | 1,080 | 3,600 |
| Tryptophan (mg) | 300 | 1,000 |
| Tyrosine (mg) | 1,230 | 4,100 |
| Valine (mg) | 1,350 | 4,500 |
Reviews
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What Our Customers Are Saying
Customers generally describe Soy Protein Isolate as a good-value, plant-based alternative to whey, with many enjoying its balanced sweetness and versatility in smoothies, porridge, yoghurt, chia pudding, overnight oats and baking. Reviewers commonly say it tastes pleasant and mixes well, particularly when blended or whisked. A smaller number found the texture thick, chalky or slightly gritty, requiring extra liquid, while some considered the chocolate or vanilla flavours too mild.
Soy Protein Isolate
4.52 from 415
Product Overview
Soy Protein is a 100% pure, plant based alternative to traditional dairy proteins. It offers one of the highest nutritional values in any protein.
Taste
Mixability
Effectiveness
Value for Money
Lactose Free
Gluten Free Ingredients
Vegetarian
Vegan
Rewards & Easy Instalments
Point Rewards
or register an account to earn 105 points when you purchase Soy Protein Isolate.
When you reach the Bronze tier, you'll earn 140 points, at the Silver tier earn 175, and 210 points on the Gold Tier. Find out more.
Pay in 4 Payments
For bigger orders over $100 AUD, choose to pay with AfterPay or PayPal Pay in 4. Find out more.
Availability & Shipping
Some options are not available to purchase of Soy Protein Isolate.
Flat rate $9 shipping Australia-wide. Orders up to 3.5kg ship Express Post, over 3.5kg ship Parcel Post.
Multibuy Discounts
Save on Soy Protein Isolate with multibuy discounts. Add 2 or more bags of any flavour to your cart and start saving.
Price Per Bag
- 1kg = $35.00
- 2kg (2 x 1kg) bags = $33.00 each
- 3kg (3 x 1kg) bags = $32.00 each
- 4kg (4 x 1kg) bags = $31.00 each
- 5kg (5 x 1kg) bags = $30.40 each
- 10kg (10 x 1kg) bags = $29.40 each