Drug Interaction Severity Calculator
Quantify the potential severity of a drug-drug interaction based on individual severity scores and patient risk factors.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Combined Interaction Score
6
Risk Level (1=Low, 4=Critical)
2
How to Use This Calculator
- Rate Drug 1 Severity Score (0–10) based on the drug's individual risk profile — look up the drug's known adverse effect burden.
- Rate Drug 2 Severity Score (0–10) similarly for the second medication.
- Enter the Combined Risk Multiplier (1–3): use 1 for no known interaction synergy, and higher values for documented pharmacodynamic or pharmacokinetic interactions.
- Set the Patient Age Risk Factor (1 = young adult, 2 = elderly, 3 = very elderly or pediatric) and Renal Risk Factor based on creatinine clearance.
- Review the Overall Interaction Severity score and whether the combination Requires Monitoring — use this to guide counseling, therapy changes, or monitoring plans.
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