Product review

Promix One Ingredient Whey Protein Powder review, scored

Item: Promix One Ingredient Whey Protein Powder
Rating: 7.09

$64 for 32 servings, one ingredient listed, and a named testing lab.

Health Corners editorial team · Fact-checked · Updated Nov 14, 2026

Promix One Ingredient Whey Protein Powder — Product photo from Promix

#2 of 8 products in Vitamins & Multivitamins

Calculated from published specs and owner feedback

See all vitamins & multivitamins

Overall 7.1
Social 8.6
Usability 5.6

$64.00

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How we review

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How the score breaks down

Published features and owner comments · not a lab test.

Overall7.1
Social8.6
Usability5.6

Usability5.6/10

Label transparency7.0/10

Testing and manufacturing4.0/10

Price and subscription terms6.0/10

Guarantee and returns7.0/10

Support and owner reports4.0/10

Social8.6/10

Reddit8.0/10

Independent web and YouTube9.2/10

Marketplace reviewsNot enough data

How each score was set

Usability 5.6 /10

From published features and owner comments · not a lab test.

Label transparency7.0/10: Four of five: a Supplement Facts tab, one named ingredient (whey concentrate), serving of 2 scoops (31 g); allergen line not read.
Testing and manufacturing4.0/10: Eurofins named for every product and a lot-code lookup is offered; no cGMP, named certification or country read.
Price and subscription terms6.0/10: $64 for 32 servings ($2.00 each), one-time buy and online pause or cancel; $1 fee and paid shipping under $75.
Guarantee and returns7.0/10: 90 days on one-time orders with opened bags allowed and refund to the card; buyer pays return shipping; subscriptions get credit only.
Support and owner reports4.0/10: A contact email and same-day shipping before 4 PM ET are stated; Trustpilot sits at 2.0 from 40 reviews, while ThingTesting shows 4.6 from 60.

Social 8.6 /10

Average of the independent owner-review sources listed below.

Reddit8.0/10: Brand-level · 2 reviews · reddit.birdcat.cafe, nyc1.lr.ggtyler.dev
Independent web and YouTube9.2/10: Brand-level · 60 reviews · thingtesting.com, torokhtiy.com
Marketplace reviewsNot enough data: Searched; not enough owner reviews to score.

Claims we checked

The published claim, then what we found. Live statuses. How we review

The claim

Third-party tested by Eurofins

What we found

Fine print

The lab is named on the product page; certificates were not on a page readable here, only a lot-code lookup is offered.

Source · checked Nov 14, 2026

The claim

90 Day Guarantee

What we found

Fine print

Refund applies to one-time orders; subscriptions get store credit or exchange and the buyer pays return shipping.

Source · checked Nov 14, 2026

The claim

One ingredient on the label

What we found

Verified

The product page and the FAQ block agree that the powder is grass-fed whey concentrate with nothing added.

Source · checked Nov 14, 2026

The claim

Free shipping on orders over $75

What we found

Fine print

The shipping page adds a $1.00 processing fee to every one-time order.

Source · checked Nov 14, 2026

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Promix One Ingredient Whey Protein Powder review, scored

#2 of 8 products in Vitamins & Multivitamins