Supplement Dosage Calculator
Estimate daily recommended intakes for Vitamin D, Calcium, and Magnesium. Personalize by age, gender, and conditions to avoid deficiencies or excess.
Step 1: Your Profile
Why it matters
Dosage recommendations (RDA) vary by age, gender, and pregnancy. The sliders let you adjust your actual intake — we’ll compare to reference values.
Step 2: Daily Supplement Dosage
Upper limits (UL)
Vit D: 4000 IU | Calcium: 2500 mg | Magnesium: 350 mg (supplemental). Keep sliders within safe range.
Your Daily Supplement Plan
🌟 Daily Vitamin D
% of RDA (capped at 100%)
Daily dosage (IU / mg)
Suggested Supplement Schedule
| Dose | Time | Vitamin D (IU) | Calcium (mg) | Magnesium (mg) |
|---|
Split your total daily dosage into equal portions. Take with meals to enhance absorption.
RDA & Upper Limits (adults)
| Supplement | RDA (19–70 yr) | Pregnancy | UL |
|---|---|---|---|
| Vitamin D | 600 IU (71+ 800 IU) | 600 IU | 4000 IU |
| Calcium | 1000 mg (F>50:1200) | 1300 mg | 2500 mg |
| Magnesium | M:400-420 / F:310-320 mg | 350-360 mg | 350 mg* |
⚠️ Important
Magnesium UL applies to pharmacological supplements only. Always consult a healthcare provider before starting high-dose supplements.
Need personalized advice?
Our registered dietitians and pharmacists can help you fine‑tune supplementation based on blood work and health conditions.
Consult a specialist