Our 4-step research process, transparent 100-point scoring framework, and independence principles — explained in full detail so you can trust every score we publish.
Brands cannot pay for higher ratings or featured placement. Ever.
Every score breakdown is published. You see exactly what we measured.
Every ingredient claim is tied to peer-reviewed literature, not marketing.
We earn commissions on qualifying purchases — always disclosed upfront.
Pages are re-reviewed when formulas change or new research emerges.
Every supplement review we publish follows the same rigorous four-step sequence. No shortcuts, no exceptions. Here's exactly what that looks like.
We deconstruct every active ingredient in the formula — not just the names on the label, but the clinical dosage, sourcing quality, bioavailability form, and what peer-reviewed literature actually says about effectiveness at that specific dose.
We aggregate verified user reviews from multiple sources — not just the brand's own website — and apply a signal-to-noise filter to separate genuine user experiences from incentivized reviews, marketing noise, and outliers.
Each product receives a 0–100 editorial score based on four weighted categories. The score is not a single opinion — it's a structured calculation that anyone can verify. We publish the category breakdown for every product we score.
We document known side effects, drug interactions, contraindications, and population-specific warnings for every supplement. This section is often the most important — especially for users taking prescription medications or managing chronic conditions.
Our scores are calculated — not assigned. Each of the four categories has a fixed weight, and the overall score is the weighted sum of the category scores. Here's the breakdown.
Are ingredients clinically dosed? Are forms bioavailable? Are sources verified? Is the formula transparent or proprietary-blended?
Does peer-reviewed research support the formula's claims? Are those studies at the ingredient level or finished-product level? How consistent is the evidence?
Is the price proportionate to the ingredient quality and dose? How does it compare to similar products? Does a money-back guarantee reduce purchase risk?
Are ingredients safe at the doses used? Is manufacturing GMP-certified? Are there any FDA warning letters or significant adverse event reports?
Scores are calculated by multiplying each category's raw score (0–100) by its weight and summing. Rounding is applied to the final result only.
Note on evidence standards: We distinguish between ingredient-level evidence (published RCTs on the ingredient) and finished-product clinical trials (studies on the specific supplement). Products with only ingredient-level evidence receive a note in their Evidence score explanation. This distinction is important for accurate consumer guidance.
Our editorial standards define both our commitments to you and our firm boundaries around commercial relationships.
Best2Buy.org is entirely reader-supported through affiliate marketing commissions. When you click a link on our site and make a qualifying purchase, we may earn a commission at no additional cost to you. This is how we fund the research, writing, and infrastructure that makes this site possible.
We want to be completely clear about what this means — and what it doesn't mean — for our editorial process.
Best2Buy.org participates in affiliate marketing programs including but not limited to Amazon Associates, ClickBank, ShareASale, Impact, and direct brand affiliate programs. Links marked with "sponsored" or "nofollow sponsored" are affiliate links. We earn commissions on qualifying purchases made through these links.
Our 100-point scoring is calculated independently of any commercial relationship. A product we have an affiliate relationship with receives the same scoring methodology as one we don't.
If a high-scoring product has a meaningful caveat — unproven mechanism, limited refund policy, high price — we note it in the review even if it could discourage a sale.
All content on Best2Buy.org is for informational purposes only. Nothing on this site constitutes medical advice, diagnosis, or treatment. Always consult a healthcare professional.
Independent Supplement Researchers · Est. 2024
The Best2Buy editorial team is a group of independent health researchers and science communicators who specialize in evaluating dietary supplement formulas against published clinical literature. Our backgrounds span nutritional biochemistry, sports science, pharmacy, and health journalism.
We do not accept full-time employment from supplement brands or work as paid consultants for any company whose products we review. Our only commercial relationship with brands is standard affiliate marketing — disclosed on every page.
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