How we grade the evidence.
Every active ingredient at Unived is assessed against the published clinical literature and assigned an evidence grade — High, Moderate, Emerging, or Weak — that appears alongside it on the product page and in the Ingredients Library.
The grades shown across the site reflect Unived's current assessment of the evidence base for each ingredient. We are formalising that assessment into a documented rubric — with criteria specific enough that two reviewers reading the same evidence base would arrive at the same grade, and grading evidence per claim rather than per ingredient. Ashwagandha's evidence base for stress markers is not the same as its evidence base for sleep, and the grade is published accordingly.
Rollout: the formal rubric — criteria, review process, per-grade reasoning, and the methodology document itself — is being applied across all 130+ products through 2026. Grades may be refined as the formal review is completed; any change will be logged. The methodology document will be published in full on its completion.
Principle No ingredient enters a Unived formulation based on tradition, marketing convention, or cost alone. The literature earns inclusion. The grade tells you how strong that literature is — including when it isn't strong.
Multiple RCTs, consistent findings
Multiple peer-reviewed randomised controlled trials with consistent positive findings on the specific claim. Meta-analyses or systematic reviews available. Effect size and dose–response well characterised.
Consistent clinical signals
At least one well-designed RCT, or consistent signals across multiple smaller studies. Mechanism well characterised. Optimal dose and population still being refined.
Promising early data
Strong preclinical evidence; limited human RCT data. Included only when the mechanism is well characterised and the safety profile is established. The limitation is disclosed; the grade is shown.
Limited or conflicting
Mechanistic basis exists, but human trial evidence is limited, inconsistent, or of low quality. Where included, it plays a supporting role, safety is established, and the grade is shown — never softened.
Ingredient Selection
Dose Architecture
Batch Verification
We test because we have to be right
Every batch of every Unived product is independently tested before release. Microbial contamination and heavy metals are checked on every batch without exception. Active-ingredient assay is run additionally where the product or category warrants it. Testing is conducted at TÜV SÜD, Bangalore Analytical, and Equinox.
The results are published in our COA Directory, permanently archived, and linkable directly from every product page. A batch that fails any parameter does not ship — regardless of cost.