Protein Powders
High IntentMuscle & Recovery
We compare protein source quality, leucine density, sweetener choices, digestibility, and price per useful serving.
Protein per servingIngredient simplicityDigestibilityCost per 25g protein
Independent Supplement Testing
Find Better Supplements Without Falling for Hype
StackTested is now oriented around supplement affiliate content. The goal is simple: surface products with transparent labels, sensible formulas, credible quality signals, and pricing that actually makes sense.
6
Priority supplement categories in scope
5
Core scoring dimensions behind every recommendation
0
Miracle-cure promises allowed in our editorial standard
Priority Review Categories
Creatine
Performance Basics
The focus is straightforward: verified creatine monohydrate, clean labeling, sensible serving size, and honest value.
Monohydrate formTesting transparencyServing accuracyFlavor-free options
Pre-Workout
Training Energy
We screen for overloaded stimulant blends, underdosed performance ingredients, and formulas built more for labels than results.
Caffeine clarityEffective dosingArtificial sweetener loadIngredient stacking
Magnesium
Daily Wellness
Chelation form, elemental dosage, capsule burden, and label honesty matter more than branding here.
Glycinate/citrate formElemental magnesiumCapsule countFillers and binders
Fish Oil
Omega-3 Support
We check EPA and DHA totals, oxidation safeguards, sourcing disclosure, and serving economics.
EPA + DHA totalsFreshness safeguardsSourcing disclosureSoftgel burden
Greens Powders
Convenience Supplements
Most greens products hide behind proprietary blends, so we look for transparency before hype.
Open-label formulaFiber and micronutrientsTaste realismPrice vs basics
How We Separate Signal From Hype
Formula Quality
Does the product use evidence-backed ingredients in amounts that are not obviously underdosed?
Testing & Transparency
We favor brands that publish third-party testing, clear labels, and batch-level quality signals.
Safety Screen
Proprietary blends, inflated stimulant loads, vague “performance” claims, and weak allergen disclosure are red flags.
Usability
Mixability, taste, capsule count, serving size, and day-to-day practicality still matter in the final recommendation.
Value Per Serving
A formula only wins if the cost matches what the label is actually delivering.
Editorial Resources
How StackTested scores supplements
Methodology
Every shortlist is built around formula strength, testing transparency, ingredient safety, usability, and value.
iHerb vs GymBeam vs Myprotein vs Bulk
Retailer Comparison
A Europe-first comparison of the four merchants most likely to power the first affiliate stack on StackTested.
How to read a supplement label in Europe
Buyer Education
A practical guide to dosage logic, ingredient forms, and label red flags before you click through to a merchant.
Our editorial and affiliate policy
Disclosure
Affiliate relationships can fund the site, but they do not decide what gets recommended.