A 2 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate flavor, featuring a black container with a red cap and a red and gold label, with chocolate pieces shown at the bottom right.

A tub of Allmax ISOFlex Pure Whey Protein Isolate in Chocolate flavor, featuring a black container with a red lid and chocolate pieces in the foreground on a white background.

A tub of Pure Whey Flex protein isolate on the left, shown next to a black promotional panel with white and red text highlighting product benefits such as 100% whey protein isolate, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

Allmax protein powder container with scoop and serving information.

Protein comparison chart with AllMax ISOFLEX supplement and protein sources like steak, tuna, chicken, and egg.

A Nutrition Facts label for a powdered protein isolate product on a black background, showing serving size 1 scoop (30g) and a list of ingredients below.

Allmax ISOFLEX Pure Whey Protein Isolate packaging label with product name, warnings, and allergen information on a black background with red and white text.

AllMax ISOFLEX protein powder bottles with flavor indicators on a black background

Allmax whey protein powder being poured into a container with certification badges on a black background.

A tub of Allmax Isoflex Pure Whey Protein Isolate in Irresistible Flavor Chocolate, shown on a dark background with chocolate pieces and text callouts detailing its nutritional value.

A tub of AllMax IsoFlex Pure Whey Protein Isolate in Chocolate flavor, featuring a black container with a red lid and a graphic of chocolate protein cups in the foreground.

A tub of ALLMAX ISOLATE chocolate peanut butter flavor whey protein isolate shown next to a black promotional panel with red and white text highlighting product benefits.

A Nutrition Facts label for a protein powder product on a black background, showing serving size 1 scoop (30g), calories 120, and detailed nutrient breakdown with ingredients listed below.

A tub of Allmax ISOFLEX Pure Whey Protein Isolate in Chocolate Peanut Butter flavor, featuring a black container with a red lid and a detailed product label.

Allmax ISOFLEX protein powder container with vanilla flavor indication

A container of ALLMAX ISOFLEX Chocolate Protein Isolate Vanilla flavor shown next to a black promotional graphic with text highlighting product benefits such as 100% whey protein isolate source, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

A Nutrition Facts label for a protein powder product on a black background, showing 1 scoop (30g) with 120 calories and a list of nutrients including protein, fat, sodium, and carbohydrates.

A tub of Allmax Isoflex Pure Whey Protein Isolate in Vanilla flavor, shown on a black background with vanilla flowers, chocolate chips, and milk splash graphics. Large text at the top reads 'IRRESISTIBLE FLAVOR VANILLA' and pink boxes on the right list nutritional facts: 120 calories, low fat, 0g sugar, and 27g protein.

A 2 lb black tub of Allmax IsoFlex Pure Whey Protein Isolate in Banana flavor, featuring a red cap and banana slices shown next to it on a white background.

ISOFlex protein supplement container with certification badges on a black background

A centered Nutrition Facts label for a whey protein isolate on a solid black background. The label is white with black text and shows 1 scoop serving size, calories, nutrients, and ingredients.

Allmax ISOFLEX Pure Whey Protein Isolate label with warning and allergen information on a black background.

Allmax Isoflex banana-flavored protein powder tub with a red cap, shown on a black background with banana slices, banana peels, and red text callouts listing calories, low fat, sugar, and protein.

A black tub of Allmax ISOFLEX Pure Whey Protein Isolate with a red lid, shown on a white background with two cake slices in the foreground.

AllMax ISOFlex Pure Whey Protein Isolate container with features listed on a black background

A Nutrition Facts label on a black background, showing a protein powder product with 1 scoop serving size, 120 calories, and a list of ingredients at the bottom.

A bottle of Allmax Isoflex Pure Whey Protein Isolate in 'Irresistible Flavor Birthday Cake' flavor, shown with two cake slices on a dark background with promotional text overlays.

A tub of Allmax IsoFlex Pure Whey Protein Isolate in Blueberry flavor, shown alongside two blueberry muffins on a clean white background.

A bottle of ALLMAX ISOFlex Whey Protein Isolate in Blueberry Milk flavor shown next to a black promotional graphic with text highlighting product benefits.

A Nutrition Facts label for a whey protein isolate product, showing serving size 1 scoop (30g), 120 calories, and a detailed nutrient breakdown on a black background.

Allmax Isoflex Blueberry Muffin flavor protein powder tub on a black background with blueberries, muffins, and text callouts reading 'Irresistible Flavor Blueberry Muffin' and nutritional benefits.

A black tub of Allmax IsoFlex Pure Whey Protein Isolate in Caramel Macchiato flavor, featuring a red cap and a graphic of caramel swirls and coffee beans on the front label.

AllMax Protein Flex container with certification icons on a black background

A Nutrition Facts label for a whey protein isolate on a solid black background. The label is white with black text and shows 1 scoop (30g) as the serving size with 120 calories.

Allmax IsoFlex protein powder tub in Caramel Macchiato flavor, shown in a black container with a red lid on a dark background with caramel and coffee splash graphics and feature callouts.

A 2 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate flavor, featuring a black container with a red lid and a red and gold label, with chocolate chunks depicted at the bottom right.

A bottle of ISOFLEX Protein Isolate Whey Flex chocolate flavor supplement shown next to a black promotional graphic with text highlighting product benefits.

A black and red Allmax Pure Whey Protein Isolate Isoflex product label with large white and red text, warning panel, and usage note.

A bottle of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate flavor, shown on a dark background with chocolate pieces and text callouts highlighting 120 calories, low fat, 0g sugar, and 27g protein.

A bottle of Allmax Isoflex Pure Whey Protein Isolate in Chocolate mint flavor, shown with chocolate chunks and mint leaves on a clean white background.

A bottle of Allmax ISOFlex protein isolate supplement shown next to marketing text highlighting 100% whey protein isolate, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

A white Nutrition Facts label on a black background, showing protein content and ingredient information for a whey protein isolate.

Allmax IsoFlex Pure Whey Protein Isolate in Chocolate Mint flavor, shown in a black tub with a red cap, surrounded by chocolate pieces, mint leaves, and flavor graphics on a black background.

A black tub of Allmax Isoflex Pure Whey Protein Isolate with a red lid, shown on a white background with two Oreo cookies at the bottom right.

AllMax ISOFlex protein supplement container with certification badges on a black background

A centered Nutrition Facts label on a black background, showing a protein powder product with serving size 1 scoop (31g) and calorie content 120 per serving. The label lists nutrients such as total fat, saturated fat, cholesterol, sodium, total carbohydrate, dietary fiber, sugars, protein, vitamin D, calcium, iron, and potassium.

A black tub of Allmax Isoflex protein powder with a red lid, surrounded by Oreo cookies on a black background. The image features text overlays reading 'IRRESISTIBLE FLAVOR COOKIES & CREAM' and four red callouts highlighting nutritional facts: 120 calories, low fat (0g), 0g sugar, and 27g protein.

A black tub of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate Peanut Butter flavor, featuring a red lid and a label with red and gold lettering. The tub is shown on a white background with two chocolate peanut butter cups in the lower right corner.

A bottle of ISOFlex Whey Protein Isolate on the left, next to a black promotional panel with red and white text highlighting product benefits such as 100% whey protein isolate, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

A bottle of Allmax Isoflex Chocolate Peanut Butter pure whey protein isolate powder, shown with chocolate pieces on a black background, featuring promotional text and nutritional callouts.

A black tub of Allmax ISOFLEX Pure Whey Protein Isolate in Orange-Dreamsicle flavor, featuring a red lid and orange-flavored whey splash graphic on the label, with orange slices and whipped cream swirls in the foreground on a white background.

A tub of Allmax ISOFlex Protein Isolate Orange Dreamsicle flavour on the left, next to four feature callouts on the right highlighting 100% whey protein isolate, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

A Nutrition Facts label for a whey protein isolate product on a solid black background. The label is white with black text and shows 1 scoop (30 g) as the serving size with 120 calories.

Allmax IsoFlex protein powder tub in orange dreamsicle flavor, shown with orange slices, vanilla ice cream swirls, and informational callouts on a black background.

Allmax ISOFLEX protein supplement bottle with pineapple and coconut on a white background

A black Nutrition Facts label with white text showing serving size, calories, and nutrient information for a whey protein isolate product.

Allmax Isoflex Whey Protein Isolate in Irresistible Flavor Pineapple Coconut. The black tub with a red cap is shown on a dark background with graphic text highlighting its nutritional benefits (120 calories, low fat, 0g sugar, 27g protein) and pineapple/coconut illustrations.

A black tub of Allmax IsoFlex Pure Whey Protein Isolate in strawberry flavor, featuring a red cap and a label with red and white text, shown alongside fresh strawberries on a white background.

A tub of ISOFlex Protein Isolate Strawberry on the left, next to a black promotional panel with white and red text highlighting product benefits such as 100% whey protein isolate source, native and intact protein, hybrid ratio isolate technology, and fast absorbing, easy to digest formula.

A black tub of Allmax IsoFlex protein powder with a red cap, shown on a black background with strawberries and text callouts for strawberry flavor, calories, low fat, sugar, and protein content.

A 2 lb bottle of Allmax ISOFLEX Pure Whey Protein Isolate in Vanilla flavor, featuring a black container with a red cap and vanilla flower graphics on a white background.

A tub of ISOFlex Protein Isolate Vanilla flavor shown next to a black promotional panel with red and white text highlighting product features such as 100% whey protein isolate, native and intact protein, hybrid ratio isolate technology, and fast absorbing properties.

A bottle of Allmax IsoFlex vanilla protein powder on a black background with vanilla beans, cream swirl, and text callouts for calories, fat, sugar, and protein.

A black tub of Allmax Isoflex Pure Whey Protein Isolate in Pumpkin Pie flavor, featuring a red ribbed cap and a black label with red and white text.

A 2 lb tub of Allmax Isoflex Pure Whey Protein Isolate in Peppermint Bark flavor, featuring a black container with a red cap and a detailed black label with red and gold text.

A 2 lb tub of Allmax Isoflex Pure Whey Protein Isolate in Lucky Cereal flavor, featuring a black container with a red lid and a black label with red and yellow text.

A 5 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate flavor, shown with several chocolate pieces in front on a white background.

ISOFlex protein supplement bottle with certification badges on a black background

A Nutrition Facts label for a whey protein isolate product on a black background, showing serving size, calories, and ingredient information in white text.

A black tub of Allmax Isoflex Pure Whey Protein Isolate in Chocolate flavor with a red cap, shown on a dark background with chocolate pieces and text overlays highlighting nutritional facts.

Allmax ISOFLEX protein supplement bottle with chocolate peanut butter cups on a white background

A 5 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Oreo flavor, shown with several Oreo cookies on a clean white background.

A bottle of ISOFlex Whey Protein Isolate on the left, next to a black promotional graphic with red and white text highlighting product benefits such as 100% whey protein isolate, native and intact protein, and fast absorbing formula.

A Nutrition Facts label for a protein powder product on a black background, showing serving size 1 scoop (31g) and nutritional information including calories, fat, cholesterol, sodium, carbohydrates, protein, and ingredients.

Allmax ISOFLEX Pure Whey Protein Isolate label with warnings and product details on a black background.

Allmax Isoflex Cookies & Cream protein powder tub with a red lid, surrounded by Oreo cookies on a black background, with text highlighting 120 calories, low fat, 0g sugar, and 27g protein.

A bottle of Allmax Pure Whey Protein IsoFlex chocolate peanut butter flavor on the left, next to a black and white promotional graphic on the right detailing product benefits with red checkmarks.

A Nutrition Facts label for a hybrid ion-ratio filtered whey protein isolate, showing 1 scoop (30g) with 120 calories, on a solid black background.

Allmax IsoFlex protein powder tub in Chocolate Peanut Butter flavor, shown on a black background with floating peanuts, a chocolate peanut butter cup, and red text callouts listing calories, fat, sugar, and protein.

A 5 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Strawberry flavor, featuring a black container with a red cap and a label with red and white lettering, accompanied by fresh strawberries on a white background.

A bottle of IsoFlex Whey Isolate protein powder on the left, next to a black promotional graphic on the right with text highlighting key product features such as '100% Whey Protein Isolate Source' and 'Native & Intact, Non-Denatured Whey Protein'.

A Nutrition Facts label for a whey protein powder product on a solid black background. The label is white with black text and shows 1 scoop (30g) of the product with 120 calories.

Allmax ISOFLEX Pure Whey Protein Isolate label with warnings on a black background

A bottle of Allmax IsoFlex Pure Whey Protein Isolate in Strawberry flavor, shown on a black background with strawberry graphics and pink protein splash. The image includes text overlays reading 'IRRESISTIBLE FLAVOR STRAWBERRY' and feature callouts: '120 CALORIES', 'LOW FAT (0,5G)', '0G SUGAR', and '27G PROTEIN'.

A 5 lb tub of Allmax IsoFlex Pure Whey Protein Isolate in Vanilla flavor, featuring a black container with a red cap and vanilla flower illustrations on the label.

IsoFlex Protein Flex supplement container with certification badges on a black background

A Nutrition Facts label for a protein powder product on a black background, showing serving size, calories, and nutrient content per serving, with ingredient text below.

Allmax Pure Whey Protein Isolate IsoFlex packaging label with product name in large red and white lettering on a black background with red geometric patterns, plus warning and allergen text blocks.

A black plastic tub of Allmax IsoFlex Pure Whey Protein Isolate in Birthday Cake flavor, featuring a red cap and a black label with red and white text.

A black tub of Allmax IsoFlex Pure Whey Protein Isolate in Chocolate Mint flavor, featuring a red cap and a black label with red and white text.

A black plastic tub of Allmax IsoFlex Pure Whey Protein Isolate in Banana flavor, featuring a red cap and a black label with red and yellow text.

A display box of Allmax Isoflex Chocolate flavored protein powder sticks, shown with several individual packets and three chocolate pieces in the foreground on a white background.

A box of ISOFLEX Allmax protein powder in chocolate flavor, shown with chocolate pieces and text callouts on a dark background. The image includes large text reading 'IRRESISTIBLE FLAVOR CHOCOLATE' and feature badges stating 120 calories, low fat 0.

A promotional graphic for Allmax Pure Whey Protein Isolate Isoflex Chocolate flavor, showing the product box on the left and four feature callouts on the right against a black background with red and white text.

A Nutrition Facts label for a protein powder product on a black background, showing serving size 1 (30g), calories 120, and a detailed nutrient list including protein 27g and key macronutrients.

A promotional comparison graphic for protein powder. On the left, a black bag of IsoFlex protein powder by Allmax appears beside labeled food images for steak, tuna, chicken, and egg.

A promotional graphic for Allmax Isoflex protein powder showing a woman pouring powder from a black pouch into a clear shaker bottle. Large text reads 'FAST AND CONVENIENT' and '27G PROTEIN PER SERVING,' with product packaging and an instruction note about mixing with cold water or low-fat milk.

Three boxes of Allmax IsoFlex protein powder in Chocolate, Chocolate Peanut Butter, and Vanilla flavors, displayed with corresponding chocolate treats on a black background with red and white text.

A display box of Allmax Isoflex Vanilla flavor protein powder sachets, shown with vanilla flowers and cinnamon sticks on a clean white background.

A woman in a black sports bra pours an all-terrain protein powder mix from a black pouch into a clear shaker bottle. The image is a promotional graphic with text highlighting 'FAST AND CONVENIENT' and '27G PROTEIN PER SERVING', along with product packaging and a red shaker icon.

A box of IsoFlex Allmax vanilla-flavored pure whey protein isolate shown on a black background with promotional text and feature callouts. The packaging is black with red and white branding and vanilla flower graphics.

A Nutrition Facts label for a protein powder product on a black background, showing serving size 1 (30g), 120 calories, and protein content of 27g with a 54% daily value. Ingredients list hybrid-ratio ion-filtered whey protein isolate.

Allmax Isoflex Pure Whey Protein Isolate in Vanilla flavor, shown in a black and gold retail box alongside marketing text highlighting its 100% protein isolate source, native and intact protein, hybrid ratio ion-filtration technology, and fast absorbing properties.

Front packaging panel for Allmax Pure Whey Protein Isolate Isoflex, featuring a black background with red hexagonal pattern, large red and white product name text, and a white warning panel at the bottom.

A display box of Allmax Isoflex Chocolate Peanut Butter protein powder shakes, shown with two chocolate peanut butter protein bars in the foreground on a white background.

Promotional graphic for Allmax Pure Whey Protein Isolate IsoFlex in Chocolate Peanut Butter flavor. The left side shows the product packaging, while the right side features four white callout boxes with red checkmarks highlighting key selling points: 100% whey protein isolate source, native and intact protein, hybrid ratio ion-filtration technology, and fast absorbing, easy-to-digest quality.

A box of ISOFLEX Allmax Chocolate Peanut Butter protein powder shown in a promotional graphic with large text reading 'IRRESISTIBLE FLAVOR CHOCOLATE PEANUT BUTTER' and feature callouts for calories, fat, sugar, and protein.

A Nutrition Facts label for a protein powder product on a black background, showing 1 serving with 120 calories and listing nutrients such as protein, fat, sodium, and carbohydrates.

The Best Whey Protein Isolate on the Market

Allmax Isoflex: 100% Whey Protein Isolate

Name: Allmax Isoflex: 100% Whey Protein Isolate
Brand: Allmax Nutrition
SKU: AM1113C
Price: 24.99 USD
Availability: OutOfStock
Rating: 4.96 (199 reviews)

$64.99 $74.99 Save 13%

199 reviews

In stock

Size:

Variant

Quantity:

27g Protein Per Scoop

Allmax Isoflex is a 100% whey protein isolate delivering 27 grams of protein per 30-gram scoop — with no added sugar and no fat. Its advanced Hybrid-Ratio Ion-Filtration (HRI) Technology produces one of the purest, fastest-absorbing protein supplements available for lean muscle growth and post-workout recovery.

Most standard protein powders blend whey concentrate with isolate, reducing protein purity and increasing lactose, fat, and carbohydrate content. Isoflex eliminates that compromise entirely. Every serving contains only pure whey protein isolate — no whey concentrate or fillers.

How to Take it

Mix one (1) level scoop (30g) of Allmax Isoflex with 120–150 ml (4–5 oz) of cold water, skim milk, or beverage of choice. Shake for 10–15 seconds.
Consume post-workout to support muscle protein synthesis and recovery. Isoflex can also be taken between meals or first thing in the morning.
For higher protein needs, mix two (2) scoops (~60g) with approximately 300 ml (10 oz) of water or skim milk. This delivers ~54g of whey protein isolate per serving.
For a meal replacement shake, blend 1–2 scoops of Isoflex with oatmeal, fruit, or yogurt to create a nutrient-dense, high-protein meal.
For optimal daily results, distribute protein intake across 3–5 servings throughout the day. Target 1.6–2.2 g of protein per kilogram (0.8-1.0 g of protein per pound) of body weight based on training intensity.

Who Should Take this

Clean. Effective. Enjoyable. Built for your goals.

Strength and hypertrophy athletes

Athletes seeking 27g of pure whey protein isolate per serving with 0g sugar and 0g fat

Fitness enthusiasts

Gym-goers on a cut or lean bulk who need a high-protein, low-calorie supplement (120 calories per scoop)

Individuals with mild lactose sensitivity

Isoflex is made from 100% whey protein isolate with no whey concentrate, resulting in reduced lactose content

Post-workout recovery seekers

Who require fast-absorbing protein powered by Hybrid-Ratio Ion-Filtration (HRI) Technology

Busy professionals

Who need a clean, instantly mixable protein source with Scoop-Lock™ convenience

WADA Banned Substance Tested cGMP Compliant Advanced HRI Technology

Supplement Facts

AMOUNT PER SERVING	% DAILY VALUE
Calories	120
Total Fat	0.5g	1%
Saturated Fat	0g	0%
Trans Fat	0g
Cholesterol	0mg	0%
Sodium	50mg	2%
Total Carbohydrate	2g	1%
Dietary Fiber	1g	0%
Total Sugars	0g
Includes 0g Added Sugars		0%
Protein	27g	54%
Vitamin D	0mcg	0%
Calcium	108mg	8%
Iron	0.5mg	5%
Potassium	229mg	5%

∆ Percent Daily Values are based on a 2,000 calorie diet.
Daily Value not established.

INGREDIENTS: HYBRID-RATIO IONFILTERED WHEY PROTEIN ISOLATE (Cross-Flow, Ultra-Filtered Whey Protein Isolate, Ion-Charged Particle-Filtered Whey Protein Isolate, Alpha-Lactalbumin-Rich Whey Protein Isolate), Cocoa Powder, Natural and Artificial Flavors, Guar Gum, Sucralose, Acesulfame Potassium, Lecithin (Sunflower).

Based on Isoflex Chocolate flavor. Nutritional values may vary slightly by flavor.

Hybrid-Ratio Ion-Filtration Technology

Allmax Isoflex uses an exclusive HRI filtration process that combines two advanced methods: cross-flow microfiltration and ion-exchange chromatography in precise proportions. This dual-filtration approach retains critical bioactive whey fractions, including beta-lactoglobulin, alpha-lactalbumin, and immunoglobulins, which support muscle repair, immune function, and recovery.

The result is a whey protein isolate with a protein yield exceeding 90% by weight, significantly higher than standard whey concentrate products, which typically range from 70% to 80%.

Verified for Sport: Lot-by-Lot Testing for Athlete Confidence

Isoflex is Verified for Sport, with lot-specific banned-substance testing against the WADA Prohibited List plus finished-product testing for quality and purity. Athletes can search their exact lot number online and view the corresponding test results and certificates HERE, giving you greater transparency and confidence in every scoop.

Mixes Easily in Any Flavor

Isoflex is instantized to dissolve smoothly in a shaker cup, no blender required. It is available in multiple premium flavors, including Chocolate, Vanilla, Strawberry, Chocolate Peanut Butter, Blueberry Muffin, and seasonal varieties. Every container features Scoop-Lock™ technology for built-in convenience.

For a complete performance stack, pair Isoflex with Allmax Creatine Monohydrate for strength and power support, or with Allmax CytoGreens for daily micronutrient coverage.

Complete the Stack

Allmax CytoGreens Super Green Powder

Size - 30 Servings

$29.99 ~~$39.99~~

Allmax Creatine Monohydrate Powder

Size - 100 g

$8.99 ~~$19.99~~

Allmax Isoflex: 100% Whey Protein Isolate

Size - 2 lb

$64.99 ~~$74.99~~

Customer Reviews

5 stars: 196 (98%)
4 stars: 1 (1%)
3 stars: 1 (1%)
2 stars: 0 (0%)
1 star: 1 (1%)

Best Protein I’ve ever Had

First off shout out to “SuppHead” on Instagram for the #1 ranking of this.
I’ve always had issues with protein, from upset stomach, bad taste, grainyness and bad mix jobs. I bought the 5 pound vanilla by accident but I’m really happy I did. I haven’t had one issue with this protein and it tastes amazing.
If you’re someone who has struggled with stomach issue from protein I highly highly suggest this.

I love the taste and smoothness of this protein powder.

Genuinely taste amazing, you don’t usually get that with protein shakes.

Great product

Great taste and highly effective

Super💪🏻

Expectacular

Me encanta , yo lo hago con agua y sabe super rico, no es necesario agregarle leche. Su sabor es unic9 como si fuera chocolate malteado.I love it.

Love this protein in my morning shakes. It tastes delicious. Thank you.

love it

Taste is good. This is a good product

Thank you for your review! We're glad you enjoyed the taste and found the product to be good. Your feedback means a lot to us!

Love this protein powder!
I’ve made protein balls, pancakes, and a sugar free cake with it.
When I order next I will try another flavor

Thank you for your feedback! We're so glad you’re loving the protein powder and getting creative with it. Protein balls, pancakes, and a sugar-free cake sound amazing! When you try the next flavor, let us know what you think—we’d love to hear about it! 💪😊

Chocolate peanut butter

Dear Allmax Nutrition Team,

I have been a satisfied customer of your products and would like to bring to your attention an issue regarding the taste of your ISOFLEX Whey Protein Isolate. Recently, I purchased a 2 kg container of the Chocolate Peanut Butter flavor, but I noticed that it is significantly less sweet and has a slight bitterness compared to the 1 kg container of the same flavor I bought previously. Both products are within their expiration dates.

Could you please provide insight into why there might be a difference in sweetness and the presence of bitterness between the two sizes? I appreciate your assistance in this matter.

Thank you.

Best regards,

Thank you for reaching out and for being a valued Allmax Nutrition customer! We appreciate your support and feedback.

We’re sorry to hear that the taste of your 2 kg ISOFLEX Chocolate Peanut Butter differs from your previous 1 kg container. While we maintain strict quality control and consistency across all sizes, slight variations in sweetness and taste can sometimes occur due to natural ingredient sourcing, batch differences, or storage conditions.
We’d love to investigate this further. Could you please share the batch/lot number from the container to customersupport@allmaxnutrition.com ? This will help us look into any potential formulation adjustments or quality concerns.
Your satisfaction is our priority, and we appreciate the opportunity to address your concerns. Please let us know how we can assist further.

Flavor is okay!

I've been using Allmax Isoflex Protein Powder for years. Typically I get either chocolate, vanilla, or cookies and cream, but decided to try the caramel macchiato. It's honestly my least favorite flavor and I will not be purchasing again. All of the others that I mentioned are great!

Thank you for your continued support and for sharing your feedback with us! We’re glad to hear that you’ve enjoyed our Chocolate, Vanilla, and Cookies & Cream flavors over the years.
We’re sorry to hear that the Caramel Macchiato flavor didn’t meet your expectations. Taste is personal, and we appreciate you giving it a try. Your input helps us improve, and we’ll be sure to share your feedback with our team.

Best tasting protein powder!

The Best

Best tasting product in the industry

Enjoy the flavor and taste great

Love from Pakistan

Outstanding!product quality.i highly recommend this protein.

Thank you for your wonderful review and support all the way from Pakistan! We’re delighted to hear you’re enjoying the quality of Isoflex and truly appreciate your recommendation.

Excellent product

I enjoy this product. Taste, price point and mixes well. A staple in my nutrition/supplement plan

Excellent whey protein!

The Chocolate flavor taste great, mixes easily and digest without issues, couldn't ask for more, thanks!

Best value for a heart patient!

Of utmost concern is getting high protein with low sodium. Iso-Flex has been the answer. When I get down to my last container I'll be ordering more. Muchas gracias, Amigos!

My go to protein

Great overall product I love the peanut butter flavor and chocolate mint. Goes great with overnight oats. I’m lactose intolerant and this protein does not upset my stomach.

Great

My Go To Protein

Great product, great flavor, my go to protein for all my protein supplement needs

Excellent!!!

I love the protein!!! Excellent

My fav!

Love how it tastes

Love this protein

My favorite protein powder. I order a variety of flavors. The birthday cake is my new favorite. I also have the iso natural chocolate that is awesome also. Wish they had more flavors of the iso natural. Super clean ingredients!

Excellent

Excellent taste and quality product

Great Flavor

I bought for my wife and I, great flavor the cokies and cream. Great Product.

Fire

<3

Tastes good and works well

Very good taste. I have tried several flavors and liked them all. I switch flavors regularly for variety and I have not been disappointed.

Customer review

Absolutely the best protein powder on the market. This has been my go-to for years! With such a wide range of flavours, it cannot be beat. Also, the scoop is placed at the top of the container when you open it so you don’t have to go digging into the product to find the scoop! Love this protein so much.I would recommend the protein powder to anyone looking to supplement protein into their routine.

FAQ

What makes Allmax Isoflex whey protein isolate different from whey concentrate?

Allmax Isoflex is 100% whey protein isolate processed through Hybrid-Ratio Ion-Filtration (HRI), removing fat and lactose for a higher protein yield per scoop. Whey concentrate retains more fat, carbs, and lactose, resulting in lower protein purity.

How much protein does Allmax Isoflex deliver per serving?

Each 30g scoop of Allmax Isoflex provides 27g of pure whey protein isolate with 0g sugar, 0g added fat, and only 120 calories.

Is Allmax Isoflex suitable for lactose-intolerant users?

Yes. Allmax Isoflex contains only whey protein isolate — no whey concentrate — with significantly reduced lactose content. It is a suitable option for individuals with mild lactose sensitivity.

When is the best time to take Allmax Isoflex?

Post-workout is an ideal time to support muscle recovery. Allmax Isoflex can also be consumed between meals, in the morning, or blended with oats and fruit to make a meal-replacement shake.

Is Allmax Isoflex a fast-absorbing whey protein isolate?

Yes. Allmax Isoflex uses Hybrid-Ratio Ion-Filtration (HRI) Technology for rapid protein digestion and amino acid delivery. This makes it one of the fastest-absorbing whey protein isolate options available.