Brand Review

Klean Athlete Review 2026

4.5
Overall Rating

NSF Certified for Sport

Klean Athlete is rated 4.5/5 overall. Known for: NSF Certified for Sport.

Rating: 4.5/5

NSF Certified for Sport

Compare Other Brands

Thorne
4.8
NOW Foods
4.5
Life Extension
4.7
Jarrow Formulas
4.6
Garden of Life
4.4
Nordic Naturals
4.8
Pure Encapsulations
4.7
Optimum Nutrition
4.5
Nature Made
4.3
Nutricost
4.4
Momentous
4.6
Athletic Greens (AG1)
4.2
Transparent Labs
4.7
Legion Athletics
4.6
Doctor's Best
4.4
Nature's Way
4.3
Solgar
4.5
MegaFood
4.4
Vital Proteins
4.3
Sports Research
4.5
Nootropics Depot
4.8
Bulk Supplements
4.2
Ritual
4.4
Seed
4.6
Designs for Health
4.7
Carlson Labs
4.6
Country Life
4.3
Swanson
4.2
Source Naturals
4.4
Jigsaw Health
4.5
Ancestral Supplements
4.3
Cymbiotika
4.4
Kion
4.5
Metagenics
4.6
Standard Process
4.4
Onnit
4.3
Four Sigmatic
4.2
Host Defense
4.5
Nested Naturals
4.4
Ancient Nutrition
4.3
Orgain
4.4