SleepSupplementsSkinDevicesDentalAboutUser Studies
SleepSupplementsSkinDevicesDental

PE Science Select Protein Review

Famous for taste but the amino acid transparency issue is a serious editorial concern. Uses PepForm leucine peptides that inflate leucine to 40% (normal is 10-11%) — and refuses to publish amino acid

A
M
By Alec & Michael•9 min read
✓ Updated Apr 20262.7/10 Score
Select Protein

Select Protein. Our #1 rated protein after testing.

#1 Rated Protein
Select Protein

Select Protein

★★★★★2.7 / 10

Famous for taste but the amino acid transparency issue is a serious editorial concern. Uses PepForm leucine peptides that inflate leucine to 40% (normal is 10-11%) — and refuses to publish amino acid profiles.

Formulation Quality
1.5
Testing & Transparency
0
$1.25/serving
Detailed Scoring

Evident Ratings

Select Protein

Based on hands-on testing + review analysis Compared across protein brands

2.7
out of 10
1.5
0
Price per strip: $1.25/serving
Our Findings

What We Found

What we liked

No added sugar

Our concerns

No third-party testing or certification

Contains gums (Guar Gum)

Contains natural flavors

Contains soy lecithin

Our Verdict

Famous for taste but the amino acid transparency issue is a serious editorial concern. Uses PepForm leucine peptides that inflate leucine to 40% (normal is 10-11%) — and refuses to publish amino acid profiles.

See Best Protein Powder →

Get our latest research

New reviews and sleep science insights — no spam, ever.

Keep Reading

More on Protein

Grass-Fed Whey Protein Isolate
Grass-Fed Whey Protein Isolate
AGN Roots Grass-Fed Whey Protein Isolate Review
Organic Vegan Protein
Organic Vegan Protein
Transparent Labs Organic Vegan Protein Review
USDA Organic Grass-Fed Whey Protein
USDA Organic Grass-Fed Whey Protein
Raw Organic Whey USDA Organic Grass-Fed Whey Protein Review
Select Protein

PE Science

Select Protein

Independently researched and scored by EvidentMedium confidence

2.7
Overall
Material & Safety
0.8
Trust & Reputation
0
Value & Policy
3
Features
2.3
Firsthand Testing
2.3
Material & Safety
Third-Party Testing
Claims 'all raw materials and finished products undergo third-party testing.' No specific certifier identified.
COA Availability
Not availableClaimed
Heavy Metals Testing
Not disclosed
USDA Organic
No
Trust & Reputation
Amazon Rating
4.5Verified
Amino Acid Profile Disclosed
No
Red Flags
AMINO ACID SPIKING CONCERNS: Does not publish amino acid profiles. PepForm leucine peptides inflate leucine to 40% — well above normal 10-11% range. Company stated they 'do not test amino acid profiles with each batch.' Artificial sweeteners. Soy lecithin.Verified
Value & Policy
Price
$1.00–$1.50/servingVerified
Price Per Serving
$1.25Verified
Features
Natural Flavors
Contains: Contains natural & artificial flavors
Gums
Contains: Guar Gum
Soy Lecithin
Contains: Contains soy lecithin
Added Sugar
NoneVerified
Sweetener
Sucralose + Acesulfame-KVerified
Protein Source Category
Animal-BasedVerified
Protein Source
Whey BlendVerified
Made In
USAClaimed
GMP Certified
YesVerified
Manufacturing Location
USAClaimed

Background

Founded by 'Dr. PEScience' (PhD in exercise physiology). Known for excellent flavors. Uses milk protein isolate (casein + whey) + WPC + leucine peptides. The leucine peptide question is their biggest vulnerability.

Full category comparison

Best Protein Powder →