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Soy Protein 90

Soy Protein Isolate 90 is a complete vegetable protein source. It is the closest of the vegetable proteins that most resembles the amino acid profile of dairy proteins such as milk and whey and is therefore a very popular non-dairy alternative protein.

Soy Protein Isolate 90 is high in protein and low in fat. It is the perfect protein source for both vegans and vegetarians and those with a dairy intolerance. It is ideal for building quality muscle and is instantised to ensure easy mixing.

  • Excellent 90% pure protein content

  • Complete vegetable protein source

  • 100% gluten and lactose free


  • Step 1:

    Product Profile

    The Protein Works

    SOY PROTEIN 90 (isolate)

    Engineering Researched & formulated in the UK at THE PROTEIN WORKS™
    Production Quality Manufactured, packed & despatched by THE PROTEIN WORKS™
    Flavouring & Colouring NATURAL flavours & colours
    Thickeners & Fillers 100% FREE of thickeners & fillers
    Ingredient Sourcing TPW™ accredited supplier & INFORMED SPORT™ approved supplier
    Certificate of Analysis Independently certified & full documentation provided, see Product Testing
    Level of Guarantee TPW™ LIFETIME Guarantee applicable on this product
  • Step 2:

    Protein Insight

    The Protein Works

    SOY PROTEIN 90 (isolate)

    Whey Proteins
    Whey Protein 80 (Concentrate) 0% Whey Protein 90 (Isolate) 0%
    Milk & Egg Proteins
    Milk Protein 80 (concentrate) 0% Egg Protein 80 0%
    Calcium Caseinate 90 0%    
    Non-Dairy Proteins
    Brown Rice Protein 80 (concentrate) 0% Soy Protein 90 (isolate) 100%
    Pea Protein 80 (isolate) 0%    
  • Step 3:

    Product Testing

    The Protein Works

    SOY PROTEIN 90 (isolate)

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SOY PROTEIN 90 (isolate)

  • Vegetarian
  • Vegan
  • Gluten Free
  • Natural flavours and colours
  • Diabetic
  • Wheat Free
  • GM Free

Soy Protein 90 (isolate)

Soy Protein 90 from The Protein Works™ uses only the finest quality Soy Protein Isolate on the market today. It is manufactured in-house at our own production facility to ensure the highest possible quality levels at unbeatable value for money. Our Soy Protein Isolate 90 powder provides over 90% soy protein per 100g (dry basis), backed up with the very latest independent product test results. Simply click on Product Testing to see for yourself.


Soy Protein Powder Insight

Soy Protein Isolate 90 is the most refined form of soy protein, isolated from the soya bean which is then defatted and most of the carbohydrates removed. The soya bean is a legume that contains no cholesterol and is naturally low in saturated fats. Soya beans are the only vegetable that contain all EIGHT of the essential amino acids. Isolated soy protein is easily digested by the body with a digestible rating of 95-98%.

If you follow a vegan diet, Soy Protein Isolate 90 is considered a nutritionally complete protein and can help provide the essential vitamin B12, which is only found in animal proteins.


Soy Protein Powder Premium Quality

Here at TPW™, you can have supreme confidence in the product quality and supply source. Each ingredient supplier must pass rigorous audits and checks before being given the TPW™ quality seal of approval. Traceability, quality, and consistency are the three things we demand on every single ingredient. This is our philosophy that flows through every product we manufacture and sets us apart in the world of sports nutrition today. Click on the Product Profile and the Protein Insight to see full product information for your absolute peace of mind.

Please note that this product is produced in-house at our very own production facility. It is supplied in a re-sealable foil pouch to ensure freshness and a scoop is included free of charge in every product.

Q. When should I take Soy Protein Isolate?

A. It depends upon your lifestyle and goals, we recommend the following optimal serving times: Immediately upon waking / 30 minutes pre workout / immediately after your workout / before you go to bed. Any other time during the day when you require additional protein intake.

Q.What does Soy Protein Isolate taste like?

A. Soy Protein Isolate has a neutral vegetable taste, and is considered the cleanest tasting vegetable protein available.

Q. How much protein should I take?

A. It is recommended that you consume between 2-5 servings per day, dependent upon your own personal needs. A serving would be classed as 30g (one scoop) of Soy Protein Isolate 90. It is recommended that you take 1g of protein per pound of body weight, so adjust your intake accordingly.

Q. Why do I need to take protein?

A. Consuming a protein shake can help promote muscle growth. It has been widely researched and shown to help muscle growth, recovery and repair after intense exercise or workout.

Q. Is all Soy Protein Isolate the same, regardless of which brand it is?

A. As with so many things in life, if you don't ask the right questions, you won't get the right answers! The quality of protein can vary significantly and therefore the protein content will do too. In addition, just because a product may be called Soy Protein Isolate it doesn't mean that it only contains soy protein isolate. We recommend you read the ingredients and nutritionals on the label to better understand exactly what you are buying. We can assure you that our Soy Protein 90 is purely soy protein isolate. At TPW™, we are committed to transparency and openness in all our products and that is why we provide a Product Profile, Protein Insight and Product Testing on this product.

Q. How can I tell if the protein I use is a good quality protein?

A. Key signs to look for are the level of protein declared on the label. Look for soy protein isolate with a minimum 90% content.

Q. What does "dry basis" and "as-is" mean when talking about protein content?

A. When you see a protein powder that states on the label the protein is given as "dry basis " this means that the moisture present in the powder is included in the total protein value. Moisture in dry protein powders are typically around 4%. However, when a protein supplement is stated "as-is" this means the actual protein content of the powder with the water content excluded. In other words, the true protein you will be consuming. As protein prices have increased significantly over recent years due to the large demand in the sports nutrition sector, some brands may not give you all the facts in regards to the true level of protein in their products. At TPW™, we believe in transparency to give you the utmost confidence when choosing your whey protein supplements. On all our protein products you will see both the as-is and dry-basis values declared. Once again, it's all about knowing what to look for.

Q. Is Soy Protein Isolate suitable for vegans and vegetarians?

A. Yes, it is suitable for both vegans and vegetarians and those with a dairy intolerance.

Q. What is Soy Protein Isolate made from?

A. Soy Protein Isolate is derived from soya beans.

Q. Is Soy Protein Isolate absorbed as quickly as whey protein?

A. Soy Protein Isolate powder is considered a slow to moderate release protein, so is ideal to use alongside other protein sources.

Q. Can I take Soy Protein Isolate with other supplements?

A. The simple answer is yes. We recommend you always check serving instructions on each product if you plan on taking a combination of supplements. Soy Protein Isolate is most commonly taken with creatine, oats, iBCAA and glutamine.

Q. Can I take too much protein?

A. If you don't burn the excess calories that come with the additional protein, it may lead to increased body fat. No other side effects have been noted.

Q. What if any side effects will I get from taking Soy Protein Isolate?

A. We haven't heard of any nasty side effects from taking our Soy Protein 90.

Q. Do any foods contain Soy Protein Isolate?

A. No, there are no foods that contain Soy Protein Isolate. There are many foods that contain high levels of protein, such as red meat, chicken, turkey, fish, eggs and cheese.

Q. What does Soy Protein Isolate actually do?

A. It plays a vital role in post workout nutrition. It gives your body a sustained moderate timed release of protein that is low in fat and carbohydrates at that vital time after you've exercised when your body is in a catabolic state.

Q. What effects should I expect from taking Soy Protein Isolate alongside my training regime?

A. Results vary depending on your diet, nutrition, training and individual body type. For an average individual, it can help increase lean muscle mass and support an increased metabolic rate. It can also aid reduced muscle breakdown post exercise and improved recovery times, as well as faster muscle repair post workout. In simple terms, you should be able to get back into the gym quicker for your next workout .

Q. Who should take / benefit from using Soy Protein Isolate?

A. Bodybuilders and strength athletes. Endurance athletes. Those on a controlled weight loss diet. Those new to weight training. People involved in team sports. Vegans and vegetarians looking to add a quality protein source to their diet. People with a lactose intolerance.

Values based on: 30g per serving
Energy (kJ) 113.7
Fat (g) 0.9
Carbohydrates (g) 0.3
Carbohydrates of which Sugars (g) trace
Fibre (g) 26.4
Protein (g) 27.8

For   Unflavoured variant

Soy Protein Isolate 90%



Serving Size: 30g (one large scoop)

We recommend you use between 2-3 servings per day, or as required to meet your individual needs. Add 250-350ml of water or milk into your TPW™ Master Blender. Add 1 scoop (30g), then shake and consume. The less water you use, the thicker your shake will be, so adjust to suit your own taste.

Typical daily usage:

  • 1 serving upon waking
  • 1 serving immediately after exercise
  • 1 serving before bed
Only protein I use from TPW now, I used to use Whey concentrate and Isolate and they are fantastic products too..

I just prefer this, great protein content of 27g and mixes great, be nice if it was possible to be flavoured but no big deal as it's easy to drink.

Going to put another order in today
I decided to try this website and the soy protein because I found I bloat on whey protein in the past and had also tried another website's pea protein which was just vile, it made everything just taste of dirt. Tried this soy protein and was pleasantly suprised. Mixes reasonably well most of the time and any flavour or ingredient can be added due to tis neutral flavour. Sometimes a bit lumpy, but overall am happy (anthing is better than the dread pea protein), no bloat with this, a little weight whilst on it and definitly stronger, although no change in definition - that could be for many other reasons though. Dont be quick to dismiss soy protein, this is a good one and will be back for more. Am going to try their whey protein next, just to compare tit to previous ones and the bloat effect.
Got say quick delivery of product as per! Item is great i mix it with my choc shake tastes lovely even with water will be ordering again soon and its a great price well done protein works keep up the good work!
I'm lactose intolerant so there isn't as much choice in protien shakes. I was worried about being Un-drinkable as unflavoured but it's no too bad mixed with water, just a bit chalky. However I found it helps to mix it up with a chocolate / strawberry flavour soya milkshake from supermarket and hey presto!
Amazing price for such a high quality product. Great when mixed with other whey powders for an extra protein boost.
I've gone through a 2kg pouch of the soy protein and have just started my second.

It dissolves quite well and has a pretty neutral flavour (almost like flour, but not as distinct) which adds to its versatility in shakes and bars. It's also pretty darn good in oatmeal!

Soy protein has a bad reputation amongst some bodybuilders because of the erroneous belief it is low quality and lowers testosterone, but this couldn't be further from the truth (as indicated by research, e.g.

If you are, like me, allergic to dairy, or are vegetarian or vegan or simply want to try a different protein supplement, then I would definitely recommend this product!
Just got 2kg of unflavoured, very happy with this product. It is perfect for bulking up the protein in things (porridge or soup for example) as it obviously has no flavour or sweetener.
Bought a 2K bag in the sale and have been mixing one scoop of soy with one scoop of chocolate whey 80, a banana, creapure and TPW peanut butter. Result is a belter of a post workout shake. On its own a little chalky but so easy to mask the taste and get the best out of it. Top notch product, ill buy again :)
Excellent Quality Protein, Flavoured versions would be very welcome.
Good value protein that I sometimes mix into my shake to get some extra.
I mix a scoop of this with a scoop of Diet Whey Isolate 97 and it gives that nice smooth (not runny) consistency! It's perfect for those who want their protein shake less sweet
I am new to the world of protein shakes but after recently deciding to make an effort to work out more, I noticed that it was difficult to work out every day due to fatigue and pain in my muscles. So, off I went in search of a protein shake following the advise of a friend. Being lactose intolerant, it wasn't so easy until I came across TPW! It's not the best taste in the world but I have a drink of juice close by to down after the shake. Now, I can work out everyday without any difficulty... this stuff works!!
  • 1 of 1 people found this review helpful
As a vegan, this protein is perfect for me. High protein content, mixes well, very affordable and not a bad taste either.
Looking into protein recovery shakes for after cycle rides, I thought I'd give this a go as whey was not great to digest. This stuff is really good blends up really well with the mixer/shaker and goes really well in smoothies.

Great if your vegan too. Really really impressed.
Having recently been diagnosed lactose intolerant I was a little apprehensive at trying soy protein, and had every reason to be as I have tried some bad ones... That all changed when I came across The Protein Works. The powder mixes really well in a conventional shaker, it isn't chalky and with a spoon of cinnamon it tastes lush. I find it a good substantial supplement.
Brought this as my first real venture into the soy versions of protein and in all honesty it isn't that bad. It took a bit of experimenting to get the tasty more palatable and the best I have at the moment is using Robos double concentrate (blackcurrant) and chugging it back.
The formula is good though, helps pick me up after a heavy legs/back session and goes down pretty easy.

As the above reviewer wrote though, TPW get some flavoured varieties out there, I'm sure you would make a killing then.
I've been trying to find a soy shake that mixes well for ages. Thanks TPW, you have a customer for life and if you can get some flavoured versions for us lactose intolerant people, we'd love you for it ; ) x

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