How NutriAudit Calculates Audit Progress Scores
NutriAudit first calculates a base score from dose-limit checks (60%) and documented ingredient interactions (40%), then applies a perfect-score gate for unresolved cross-product overlap, dose, and interaction items. A regional UL comparison runs only when a verified formal UL is available.
Score Overview
Each stack receives a 0-100 audit progress score. Any unresolved cross-product overlap, dose, or interaction item prevents a score of 100. Correcting inputs or changing the stack can clear findings and recover points; a simple confirmation click cannot turn a medical unknown into proven safety.
A perfect score is closed while review work remains
The current rule applies progress-score caps after the base calculation: a low dose or interaction review item caps the score at 79, a medium item at 64, and a high item or cited-UL exceedance at 49. With overlap-only findings, one cross-product overlap caps the score at 96; additional overlaps lower it progressively, with a floor of 75. The overlap count represents review workload, not probability of harm.
For example, reaching 50% of a cited UL enters the review queue and prevents a score of 100; it does not mean “50% dangerous.” A UL is an upper-bound reference for chronic daily intake, not an individual target.
Overdose Risk Assessment
Checks whether total intake of each ingredient exceeds Tolerable Upper Intake Levels (ULs)
Ingredient Interaction Analysis
Detects absorption conflicts, competition, and ratio imbalances between ingredient pairs
Overdose Risk Calculation
NutriAudit uses a dynamic deduction curve to produce a review-priority signal. Deductions use the percentage of a verified UL for the selected region; this is not a personal safety probability:
| Intake Level | % of UL | Deduction Rule |
|---|---|---|
| No UL deduction triggered | 0 - 60% | No deduction |
| UL deduction begins | 60 - 100% | Linear deduction: 0-20 points |
| Exceeding UL | 100 - 200% | Exponential deduction: 20-55 points |
| Severe excess | 200 - 300% | Accelerated deduction: 55-80 points |
| Extreme excess | 300%+ | Extreme deduction: 80-95 points (capped) |
High-risk ingredients (e.g., vitamin A, iron, selenium) receive multiplied deductions (1.2-1.5x). Water-soluble vitamins (e.g., vitamin C, B-complex) have lower multipliers (0.5-0.6x). Ingredients from multiple sources receive an additional 10% deduction.
Interaction Detection
NutriAudit performs pairwise checks on all ingredients in your supplement stack, identifying three types of interaction risks:
Absorption Conflict
One ingredient may affect another's absorption when taken together. Example: calcium might interfere with iron absorption.
Mineral Competition
Structurally similar minerals compete for the same absorption pathways. Example: high-dose zinc competes with copper and iron absorption.
Synergy & Enhancement
Some ingredient combinations have positive synergistic effects, such as vitamin D enhancing calcium absorption. Beneficial interactions do not reduce the score.
Interaction scoring: high-severity interactions deduct 25 points, medium deduct 12, low deduct 5.
Regional References and Missing-Data Boundaries
Authorities may use different reference values—or may not establish a formal UL. NutriAudit displays only the regional entries currently verified; “Not established” does not mean unlimited intake is safe. Vitamin C illustrates the display rule:
| Region | Authority | Formal Vitamin C UL |
|---|---|---|
| United States | NIH ODS / NASEM | 2,000 mg/day |
| European Union | EFSA | Not established |
| Australia | NHMRC | Not established; 1,000 mg/day is prudent guidance |
If the current region has no verified formal UL, the system does not borrow another region's value for an overdose score. Users should still read the source notes and ask a qualified healthcare professional when health context makes the question more complex.
Primary Reference Sources
Limitations
- •Scores are based on general Dietary Reference Intakes and do not account for individual factors (age, weight, health conditions, genetic metabolism differences).
- •Interaction detection covers known common ingredient pairs but does not include all possible drug-supplement interactions.
- •AI label recognition may have errors. Users should verify extracted results before auditing.
- •NutriAudit is a decision-support tool, not medical advice. Consult healthcare professionals before changing your supplement regimen.
AI Content Disclosure
NutriAudit analyses are AI-assisted and link to public reference sources where the current dataset has a verified entry. Coverage varies by ingredient and region; no rule match does not prove safety. This content is informational and does not replace professional medical advice.
Disclaimer: NutriAudit is a decision-support tool designed to help you review your supplement stack for potential duplicate, conflicting, or excessive ingredients. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your supplement routine, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Uses cited public reference data where the current dataset has a verified entry.