How-To Guides
The Quality Filter Checklist: Run Our 5-Point Review Process on Any Supplement
Our real 5-Point Quality Filter, turned into a checklist you can run on any supplement, not just the ones we've reviewed. Print it or check it off online.
Disclosure: DigiproSpark may earn a commission if you buy through links on this page, at no extra cost to you. It does not affect our evaluation. Educational content only; not medical advice. See our affiliate disclosure and medical disclaimer.
This is the same 5-Point Quality Filter we run on every product we review on this site, turned into a checklist you can run yourself on any supplement, not just the ones we’ve covered. Check each box as you go, or print it and keep it next to your laptop while you research a product. It won’t tell you whether to buy something; it will tell you whether the seller has given you enough real information to decide for yourself.
Run this on any supplement before you buy
How to check it yourself: Search the active ingredient’s name plus “clinical trial” or “RCT.” Real human research, at the dose used, beats a long ingredient list every time. A study on rats or a test tube is not the same as a study on people.
How to check it yourself: Look at the Supplement Facts panel. If you see a “proprietary blend” with only a combined milligram total, you cannot know how much of any single ingredient you’re actually getting, even if that ingredient is well-studied.
How to check it yourself: Check for real drug-interaction warnings (blood thinners, thyroid medication, diabetes medication are common ones), a known allergy rate if it’s a topical, and whether the product discloses this itself or you had to dig for it.
How to check it yourself: Find the vendor’s actual refund policy page (not just a badge on the sales page) and check: how many days, from what date, does it cover opened bottles, who pays return shipping.
How to check it yourself: Look for a real, identifiable company behind the product (not just a brand name), and check if the same formula is sold under multiple confusingly-similar domain names, a common pattern worth knowing about.
Want to see it already applied?
Every review on this site runs through this exact filter, with the real score and the real reasoning shown on the page, not just a star rating. See the real Trust Score for all 16 products we’ve reviewed, or read the full methodology behind the filter itself.
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Educational content only, not medical or financial advice. This checklist reflects what we look for in our own review process; it can’t verify a specific vendor’s claims for you.
Disclosures
Medical disclaimer
The statements on this page have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Content is for educational and informational purposes only. Always consult a qualified healthcare professional before starting any new supplement.
Who wrote this
We are not doctors. We are independent researchers who spend dozens of hours analyzing peer-reviewed clinical trials so you don't have to. Every claim on this page is scored against our 5-Point Quality Filter and linked to its source.
Affiliate disclosure
DigiproSpark may earn a commission from purchases made through the affiliate links on this page at no additional cost to you. We only recommend products that pass our 5-Point Quality Filter. Our editorial opinions are not influenced by compensation.
About the author
Satwasheel Gharde
Founder & Head of Research, DigiproSpark
Founder of Smiley Social and Head of Research at DigiproSpark. Personally researches and edits every supplement review here using the 5-Point Quality Filter: transcribing the printed Supplement Facts label, sourcing peer-reviewed human evidence (PubMed / PMC / NIH), and checking clinical dosing before any verdict. Our reviews are evidence-and-label analyses, not medical advice; material safety points (drug interactions, contraindications) are written conservatively and flagged for a qualified clinician or pharmacist to confirm. Conflict-of-interest: pages may contain affiliate links that can earn a commission, which never changes a rating. Corrections & editorial contact: smileysocial@digiprospark.com.
Last updated: August 4, 2026