Supplement Interaction Calculator
Check for absorption interactions between common supplements and get timing recommendations.
Inputs
Results
Interaction Level (0-3)
0
Separate? (0=No, 1=Yes)
0
Absorption Impact10%
How to Use This Calculator
- Enter Supplement A as a number 1-5 (1 = Vitamin D, 2 = Iron, 3 = Calcium, 4 = Zinc, 5 = Magnesium).
- Enter Supplement B the same way, using the same 1-5 code list.
- Set Timing to 1 if you take them together, or 2 if you take them 2+ hours apart.
- Review the Interaction Level (0-3) and Absorption Impact (%) results for the pair.
- Check Recommended Timing (0 = together is fine, 1 = separate by 2+ hours) and consult your pharmacist or physician before making changes.
What each input means
- Supplement A
- 1 = Vitamin D, 2 = Iron, 3 = Calcium, 4 = Zinc, 5 = Magnesium
- Timing
- 1 = Taken together, 2 = Taken 2+ hours apart
How this is calculated
Worked example, using the default values
- Identify Input ParametersSupplement A = 1, Supplement B = 3, Timing = 1 = 3 input(s) provided
- Calculate Interaction LevelInteraction Level0 = 0
- Calculate Absorption ImpactAbsorption Impact10 = 10
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.
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