ALLMAX IsoFlex — 27g Pure Whey Isolate, Low Fat and Low Carb

ALLMAX IsoFlex

27 grams of pure whey protein isolate per serving — low fat, low carbohydrate, and one of the leanest proteins we stock.

Run the arithmetic yourself

Here is a check you can do on any protein tub, and it is the most useful thing on this page.

Divide the protein by the scoop weight.

A pure isolate	~85% or above	Almost nothing but protein
A typical whey blend	~70–75%	Concentrate-led
A dessert-style blend	~55%	Thickeners and flavour system

27g is a notably high protein figure per serving, and on an isolate that number is doing real work — there is very little else in the scoop.

That arithmetic is not marketing. It is something you can do on any shelf, and it exposes products where a large scoop is hiding filler.

What isolate means, and where it wins

Whey comes in grades, and the difference is how much filtering has been done.

• Concentrate — roughly 70–80% protein. Retains more fat, lactose and carbohydrate. Cheaper, and creamier to drink
• Isolate — filtered further, to around 90% protein before flavouring. Most of the fat and lactose removed

The practical consequences:

• Lactose is largely filtered out, which is why isolate suits many people who get bloating or discomfort from concentrate. Not a substitute for a milk allergy, but a genuine difference for lactose sensitivity
• Very low fat and carbohydrate, so nearly all the calories are protein
• Faster digestion, since there is no fat to slow gastric emptying

Where concentrate wins: it is cheaper and tastes richer. If lactose does not bother you and you are not counting calories tightly, concentrate is perfectly good and better value.

⚠ Amino spiking, and how to spot it

Protein content is commonly measured by nitrogen content — and cheap free-form amino acids such as glycine, taurine and glutamine contain nitrogen too. Adding them inflates the measured protein figure without supplying complete usable protein. A nitrogen test cannot tell the difference.

What defeats it is a fully disclosed ingredient list. If the only protein source listed is whey isolate, and no free-form aminos appear in the ingredients, there is nowhere for spiking to hide.

Check the ingredients, not just the protein number.

Where it sits in our range

ALLMAX IsoFlex	27g pure isolate	Highest protein per serving
NutraBio 100% Whey Isolate	25g / 120 cal	~86% by weight, published lab results
Rule One R1 Whey Blend	Isolate-led blend	Informed Choice certified
Clear Whey Isolate	20g / 100 cal	Drinks like fruit juice

Specs

Protein	27g pure whey isolate
Fat	Very low
Carbohydrate	Very low
⚠ Allergen	Contains milk

How to take it

• One scoop in 6 to 8oz of water or milk. Water keeps it lean; milk adds roughly 100 calories and improves texture.
• Any time. The post-workout window is measured in hours rather than minutes, so total daily protein matters far more than timing.
• Aim for 1.6 to 2.2g of protein per kg of bodyweight daily.
• Isolate needs less liquid than most proteins — it is dense and mixes readily.

Who this is for

• Anyone counting calories, where protein per calorie is the priority
• People who get bloating from whey concentrate
• Anyone cutting, where every calorie has to earn its place
• People on low-carbohydrate or keto approaches
• Anyone wanting the highest protein per serving on our shelf

Who this is not for

Anyone with a milk allergy. Our plant proteins are the alternative — lactose intolerance is different, and isolate is often fine.

Anyone wanting a thick, dessert-like shake. Isolate is lean and thin by design.

Anyone prioritising value per gram — concentrate is cheaper when lactose is not an issue.

Tested athletes should check for third-party certification.

Not for anyone under 18 without medical advice.

Stack it with: creatine, which mixes into a shake without affecting taste.

Frequently asked questions

How much protein per serving?
27g of pure whey isolate — one of the highest per-serving figures on our shelf.

How do I judge a protein powder?
Divide the protein by the scoop weight. Around 85% and above indicates a pure isolate; a typical blend sits nearer 70–75%; a dessert-style blend can drop to 55%.

What is the difference between isolate and concentrate?
Isolate is filtered further — to about 90% protein before flavouring — removing most of the fat and lactose. Concentrate is 70–80%, cheaper and creamier.

Is it suitable if I'm lactose intolerant?
Generally yes, since isolate has most of the lactose filtered out. It is not suitable for a milk allergy.

What is amino spiking?
Adding cheap free-form amino acids to inflate nitrogen-based protein measurements without supplying complete protein. A fully disclosed ingredient list is what defeats it.

When should I take it?
Any time. Total daily protein matters far more than timing.

How much water should I use?
6 to 8 ounces. Isolate is dense and needs less liquid than most proteins.

How much protein do I need daily?
Roughly 1.6 to 2.2g per kilogram of bodyweight, spread across the day.