A small acid from anise, met in food, in the body's handling of anise oil, and in skin products, where it slows mold and bacteria in acidic formulas. Laboratory work is consistent; human work covers only absorption and disposal, never a health outcome. A well-tolerated ingredient with a real place in formulation and no demonstrated health effect in people. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Fasting glucose | 75–86 mg/dL | Tests the only metabolic claim made for the compound |
| HbA1c | 4.8–5.2% | Tracks average glucose over roughly three months |
| Fasting insulin | 2–5 µIU/mL | Detects change in insulin output, the mechanism proposed in the cell work |
| hs-CRP | Below 0.5 mg/L | General inflammation reference point for topical or dietary changes |
| eGFR | Above 90 mL/min/1.73 m² | Clearance of the hippurate conjugate is renal |
| ALT | 10–26 U/L (men), 8–22 U/L (women) | Liver reference point before any sustained novel exposure |
| Urinary 4-methoxyhippuric acid | No established target; track the change from the individual's own baseline | The only direct measure of internal exposure |
Cadence: Skin reassessed at 1 week and 4 weeks, then every 3–6 months while use continues; where a metabolic claim is being tested, glucose measures repeated at 12 weeks and then every 6–12 months, with earlier reassessment if irritation appears