How we organize research evidence

Candidate research is found using ingredient names and major aliases. Not every candidate becomes part of a Goal Tier; unclear ingredient attribution or goal relevance is excluded or kept as separate context.

Research is separated into Core direct evidence for a Goal Tier, Context evidence limited to a specific disease, population, or clinical setting, Indirect evidence that does not directly answer the consumer goal, and Excluded evidence. Animal and cell findings are not mixed with direct human evidence.

Goal Tier, where displayed, is an experimental summary of automatically classified research. It is not a validated clinical certainty grade or a professional guideline. Automated analysis can misclassify comparisons, populations, and outcomes, so a tier alone cannot establish efficacy or applicability to a general population.

Counts describe the material currently collected and classified. They are not independent trial counts, quality ratings, or proof of a complete search. Original studies and reviews have different roles. A reported null comparison differs from an unreadable result, and a positive-paper ratio is not a personal probability.

Research intake is an observed range from verifiable Core studies. It is not a recommended dose or an upper safety limit, and many studies do not report a verifiable intake in the available source.

Side-effect and combination information is a literature signal kept separate from Goal Tier calculations. It is not a comprehensive safety grade, and the absence of a displayed signal does not prove safety.

Technical terms are translated into user-friendly language without adding conclusions that were not present in the papers. We prefer wording such as “studies observed this signal” over “this works.”

Stored publication information and abstracts are analyzed and translated automatically. We do not claim a full-text systematic review, a complete risk-of-bias assessment, or clinician review of every paper. Source metadata and automated interpretation have different levels of reliability.

Use the contact page to report a page URL and the exact statement that needs correction. Information identifying the research can help when a source check is needed. We do not display invented expert credentials or clinical-review badges.