Our supplement testing methodology applies the same rigorous standards used in pharmaceutical development.
Our Supplement Testing Criteria
This is our science-backed framework for assessing every supplement we review. Unlike generic supplement testing that only checks purity, our framework goes further…
In pharmaceutical development, we follow strict protocols to ensure safety, efficacy, and quality. I apply the same discipline here.
The Four Pillars of Our Evaluation
1. Clinical Evidence
What we ask: Is the ingredient supported by peer-reviewed human studies? What are the effective dosages? Who funded the research? Red flags: Animal studies only, unpublished data, small sample sizes, or research funded exclusively by the manufacturer.2. Ingredient Quality
What we ask: Does the product use pharmaceutical-grade ingredients? Are the doses clinically relevant? Is the form (e.g., magnesium glycinate vs. oxide) optimal for absorption? Red flags: Proprietary blends hiding individual doses, cheap forms of ingredients, unnecessary fillers.3. Manufacturing & Quality Control
What we ask: Is the facility GMP-certified? Does the company conduct third-party testing (USP, NSF, or ConsumerLab)? Are they transparent about sourcing? Red flags: No GMP certification, no third-party testing, or unwillingness to share quality information.4. Transparency & Claims
What we ask: Are the marketing claims consistent with the evidence? Is the company transparent about ingredients, sourcing, and testing? Do they disclose potential side effects? Red flags: Overblown claims, miracle cures, or language that suggests “curing” diseases (which is illegal for supplements).Our Rating System
Each supplement receives a rating based on the four pillars above:
- ⭐️⭐️⭐️⭐️⭐️ (Excellent): Strong clinical evidence, high-quality ingredients, GMP manufacturing, transparent practices.
- ⭐️⭐️⭐️⭐️ (Good): Solid evidence, good quality, minor concerns.
- ⭐️⭐️⭐️ (Average): Some evidence, acceptable quality, but room for improvement.
- ⭐️⭐️ (Below Average): Limited evidence, quality concerns, lack of transparency.
- ⭐️ (Poor): No evidence, poor quality, or deceptive marketing.
See how I apply this framework to real products: Top 3 Magnesium Supplements – Pharmacist Picks →
A Note on Conflicts of Interest
I do not accept free products for review. I do not accept payment for positive reviews. If a company sends a sample, I disclose that. If an article contains affiliate links, I disclose that. Full transparency, always.
This site exists to help you make informed decisions—not to sell you things you don’t need.