Vitamin Toxicity Calculator
Estimate safe vitamin intake, compare with Tolerable Upper Limits (UL). Identify risk of excessive dosage for vitamins A, D, E, K, B6, C.
Step 1: Vitamin & Dosage
daily
Upper intake level (UL) reference*
Vitamin A: 3000 mcg/day • D: 100 mcg (4000 IU) • E: 1000 mg • K: not established • B6: 100 mg • C: 2000 mg. *Adult UL, may vary.
Step 2: Personal Factors
Risk factors
Sensitivity adjusts the caution threshold. Dietary intake adds ~20% to daily load. Fat‑storage vitamins accumulate.
Toxicity Risk Assessment
Summary
Detailed Analysis
Intake Breakdown
Toxicity Risk Level
MODERATE
78% of UL (Vitamin A)
Daily intake
800 mcg
Upper Limit (UL)
3000 mcg
% of UL
27%
Risk category
Low
Vitamin & UL Comparison
| Vitamin | Daily intake | UL (adult) | % UL | Risk level |
|---|
* UL from IOM for adults. Individual tolerance may vary. Consult healthcare provider.
Intake vs Upper Limit
How toxicity is estimated
% UL = (daily intake / Tolerable Upper Intake Level) × 100
Low risk: <50% • Moderate: 50‑80% • High: 80‑100% • Toxic: >100%. Sensitivity adds a buffer to the warning threshold.
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