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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

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

Syntha-6. Our #1 rated protein after testing.

#1 Rated Protein
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

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

3.2
out of 10
0
1.5
Price per strip: $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.

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Syntha-6

BSN

Syntha-6

Independently researched and scored by EvidentHigh confidence

3.2
Overall
Material & Safety
0
Trust & Reputation
0.8
Value & Policy
3.5
Features
3.3
Firsthand Testing
2.3
Material & Safety
Third-Party Testing
No third-party certification verified. Claims cGMP manufacturing. Claimed Informed Choice but could not verify.
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
No
Trust & Reputation
Amazon Rating
4.5Verified
Amino Acid Profile Disclosed
No
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'
Gums
Contains: Cellulose Gum
Soy Lecithin
Contains: Contains soy lecithin
Added Sugar
2g
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.

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