Vitamin C Requirements Calculator
Estimate your daily Vitamin C needs based on age, gender, lifestyle, and health factors. Uses official dietary reference intakes (RDA) with personalized adjustments.
Step 1: Personal Information
30
0 mg
Why age & life stage matter
Vitamin C requirements increase during pregnancy, lactation, and with age. Smokers and people under stress need additional vitamin C.
Step 2: Lifestyle & Absorption
95%
About absorption
Absorption efficiency varies by diet and health. If absorption is lower (e.g., digestive issues), your required intake increases accordingly.
Your Vitamin C Requirement
Summary
Stage Comparison
Breakdown
Recommended Daily Vitamin C
79 mg
Adult female, non‑smoker, 95% absorption
Baseline requirement
75 mg
Additional factors
0 mg
Absorption adjustment
79 mg
Absorption rate
95%
RDA by Life Stage (mg/day)
| Group | Requirement (mg) | With smoker adj. |
|---|
Requirement by Life Stage
How your requirement is calculated
Baseline based on age/gender/pregnancy + smoker (35mg) + health condition extra. Then adjusted for absorption: final = (baseline + extras) / (absorption%).
Need personalized nutrition advice?
Speak with a registered dietitian to tailor vitamin C and other nutrient goals to your health profile.
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