Medical disclaimer: This tool is for informational purposes only and is not medical advice. Evidence grades reflect the strength of published clinical research behind an ingredient, not a guarantee of individual results. Individual results vary. Consult a healthcare professional before starting any supplement, especially if you take other medications or have a liver, kidney, heart, or thyroid condition.
Every ingredient we cover in our Ingredient Guides library is assigned an Evidence Grade (A, B, or C) based on the strength of the clinical research behind it. Instead of opening all 62 guides one by one, use this lookup to instantly see any ingredient’s grade and the one-line reason behind it, then click through to the full guide for dosage, forms, and safety details. Already know how much of something you take? Try our Ingredient Dose Checker next.
What the Grades Mean
Grade A (Strong Evidence): Multiple randomized controlled trials show a consistent effect.
Grade B (Good Evidence): Some clinical trials support it, but results are mixed, smaller-sample, or limited to specific uses.
Grade C (Preliminary Evidence): Mostly animal, lab, or theoretical basis, with limited or inconsistent human trial data.
Full Evidence Grade Reference Table
| Ingredient | Grade | Why | Full Guide |
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Frequently Asked Questions
Q: What does an Evidence Grade actually measure?
A: It reflects how strong and consistent the published clinical research is behind an ingredient’s main uses, ranging from multiple randomized controlled trials (Grade A) down to mostly animal, lab, or theoretical evidence (Grade C). It does not measure safety, popularity, or how well an ingredient works for any one person.
Q: Does a Grade C ingredient mean it doesn’t work?
A: No. A Grade C simply means rigorous human clinical trials are limited or inconsistent so far, not that the ingredient has been proven ineffective. Some Grade C ingredients have strong traditional-use histories or promising early data that hasn’t yet been confirmed in larger trials.
Q: How were these grades assigned?
A: Each grade is pulled directly from that ingredient’s own full Ingredient Guide on this site, where our editorial team reviewed the available clinical literature for that specific ingredient. This lookup tool does not create new grades, it simply surfaces the grade already published in each guide.
Q: Where can I get dosage information, not just the grade?
A: Click “Read the full guide” on any ingredient card, or visit the Ingredient Guides hub. If you’re checking multiple supplements at once for dosage limits or duplicate ingredients, try the Ingredient Dose Checker.
Sources
- Evidence grades and rationale are drawn directly from RovunoReview’s own published Ingredient Guides (62 individual guides, category: Ingredient Guides), each reviewed against our Review Methodology.
These statements have not been evaluated by the Food and Drug Administration. This content is not intended to diagnose, treat, cure, or prevent any disease and is not a substitute for advice from your doctor or pharmacist.