Skip to content
Best Protein Powder

Allmax

IsoFlex 100% Whey Protein Isolate

Allmax IsoFlex 100% Whey Protein Isolate is a whey isolate protein powder with 27 g of protein per 1 scoop (30 g). It scores 71/100 on the TBPP Quality Score. We found no third-party testing certification.

No third-party testing found
Our score
71/100
Methodology v1.0
Protein
27g
1 scoop (30 g)
Sugar
0g
Per serving
Protein by weight
90%
Per serving
$0.33
$0.31 per 25 g protein

Nutrition per serving

Chocolate flavor, from the label.

Nutrition per serving
Serving size1 scoop (30 g)
Protein27 g
Calories120
Carbohydrates2 g
Sugar0 g
Fat0.5 g
Sodium60 mg
Protein by weight90%
LeucineNot verified
BCAAsNot verified

How it scored

71 of 100 points. How we score

CriterionPointsWhy
Protein density30 / 3090% of each scoop is protein
Third-party testing0 / 25No verified independent testing program
Label transparency20 / 20Fully disclosed formula, no amino spiking
Sugar10 / 100 g sugar per serving
Ingredient simplicity6 / 10Mix of natural and artificial flavors or sweeteners
Verified label data5 / 57 of 7 label values verified

Formula and label

Formula and label
TypeWhey Isolate
Protein sourcesWhey Protein Isolate
Third-party testingNone found
SweetenersSucralose, Acesulfame Potassium
Proprietary blendNo
Added free amino acidsNo
DietaryGluten-Free
AllergensMilk
Made byAllmax
Sold atAllmax Nutrition, Vitacost, iHerb

Price

$24.99–$149.99 for 5 lb. About $0.33 per serving, or $0.31 per 25 g of protein.

Sizes: 0.9 lb, 2 lb, 5 lb, 10 packets

Flavors (15)

  • Vanilla
  • Chocolate
  • Chocolate Peanut Butter
  • Lucky Jacked Cereal
  • Peppermint Bark
  • Pumpkin Pie
  • Blueberry Muffin
  • Birthday Cake
  • Strawberry
  • Orange Dreamsicle
  • Pineapple Coconut
  • Chocolate Mint
  • Cookies & Cream
  • Banana
  • Caramel Macchiato

Sources

Nutrition (30 g scoop: 120 kcal, 0.5 g fat, 60 mg sodium, 2 g carbs, <1 g fiber, 0 g sugar, 27 g protein) and ingredients (hybrid-ratio ion-filtered whey protein isolate, cocoa, natural and artificial flavors, guar gum, sucralose, acesulfame potassium, sunflower lecithin) read from the brand's US Chocolate 0.9 lb label image (14 servings). Allergen 'Contains Milk (Whey)' from brand warning-panel image. Gluten-free is a brand claim on the front-label image ('Contains No Gluten'); soy-free removed in verification (not stated on brand label/imagery; warning panel says produced in a facility that also handles soy). Front label shows a generic 'Clean for Athletes / Banned Substance Tested' mark; retailer listings mention Informed-Choice but not confirmed by brand or certifier, so not listed. Sizes and prices ($24.99 0.9 lb, $64.99 2 lb, $149.99 5 lb, $29.99 10 packets) from brand Shopify data 2026-10-13. 5 lb = 75 servings per Vitacost listing (secondary; via search-result snippet). Leucine/BCAA left null: retailer listings show an amino profile but brand page not verified. Brand nav links to a product-testing page but no named certification is confirmed for IsoFlex. Country of origin not confirmed on brand site.

Good to know

Last checked 2026-10-13. Labels change, so check the package before buying if you have allergies. If you are pregnant, nursing or buying for a child, ask your doctor before adding a supplement.

More from Allmax

All Allmax powders
Allmax

QuickMass Mass Gainer

Mass Gainer · 267 g scoop
No third-party testing found12 g sugar
Protein
64g
Sugar
12g
Our score
39/100
Price not verifiedChecked 2026-10-13
Allmax

Hexapro High-Protein Lean Meal

Whey Blend · 44 g scoop
No third-party testing foundProprietary blend
Protein
25g
Sugar
4g
Our score
33/100
$1.19 / servingChecked 2026-10-14