SleepEnergySupplementsSkinDevicesDentalAboutUser Studies
SleepEnergySupplementsSkinDevicesDental

Evident owns Sleep Karma. Here's how we score every brand, including our own.

BSN Syntha-6 Review

The 'taste first, macros second' protein. 200 calories and 6g fat per serving makes this more of a meal supplement than a lean protein. 6-protein blend with casein provides sustained release but obscu

A
M
By Alec & Michael•9 min read
✓ Updated Apr 20263.2/10 Score
BSN Syntha-6

BSN Syntha-6.

Syntha-6

Syntha-6

★★★★★3.2 / 10

The 'taste first, macros second' protein. 200 calories and 6g fat per serving makes this more of a meal supplement than a lean protein.

Formulation Quality
0
Testing & Transparency
1.5
$1.00/serving
Detailed Scoring

Evident Ratings

Syntha-6

Sub-scores are category scores on a 1–5 scale, shown out of 10.

3.2
out of 10
0/10
1.6/10
7/10
6.6/10
4.6/10
Price per serving: $1.00/serving
Our Findings

What We Found

Our concerns

No third-party testing or certification

Contains gums (Cellulose Gum)

Contains natural flavors

Contains soy lecithin

Our Verdict

The 'taste first, macros second' protein. 200 calories and 6g fat per serving makes this more of a meal supplement than a lean protein.

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
Syntha-6

BSN

Syntha-6

Researched and scored by Evident Reviews using our published criteria (owned brands disclosed)High confidence

3.2
Overall
Material Safety
0/10
Trust & Reputation
1.6/10
Value & Policy
7/10
Features
6.6/10
Firsthand testing
4.6/10
Material & Safety
Third-Party Testing
No third-party certification verified. Claims cGMP manufacturing. Claimed Informed Choice but could not verify.Claimed
COA Availability
Not availableClaimed
Heavy Metals Testing
Consumer Reports 2025: lead below detection limits (#4 ranked) — surprisingly clean given the ingredient complexity.Verified
USDA Organic
NoClaimed
Trust & Reputation
Amazon Rating
4.5Verified
Amino Acid Profile Disclosed
NoClaimed
Red Flags
200 calories per serving (highest in roundup). 6g fat, 15g carbs. Contains sunflower oil creamer, MCTs, wheat glutamine peptides (contains gluten). Polydextrose filler. 6-protein blend obscures ratios. No third-party testing despite claims. Two artificial sweeteners. 20+ ingredients.Verified
Value & Policy
Price
~$1.00/servingVerified
Price Per Serving
$1.00Verified
Features
Natural Flavors
Contains: Contains 'Natural & Artificial Flavors'Claimed
Gums
Contains: Cellulose GumClaimed
Soy Lecithin
Contains: Contains soy lecithinClaimed
Added Sugar
2gClaimed
Sweetener
Sucralose + Acesulfame-KVerified
Protein Source Category
Animal-BasedVerified
Protein Source
Whey BlendVerified
Made In
USAClaimed
GMP Certified
YesVerified
Manufacturing Location
USAClaimed

Background

Owned by Glanbia Performance Nutrition. Known as the 'best tasting' protein — optimized for flavor at the expense of macro purity. The 6-protein sustained-release blend was innovative when launched. Long-running product with loyal following. Contains wheat, which is unusual for protein powder.

Full category comparison

Best Protein Powder →