Geriatric Dosing Calculator
Calculate age-appropriate medication doses for elderly patients considering renal function, frailty, and drug interactions.
Important Health Disclaimer
This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.
For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.
Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.
Not a substitute for professional medical advice
Patient Information
Polypharmacy: 5+ medications
Drug Information
Recommended Dose
283 mg
43% reduction from adult dose
Start Low, Go Slow
Consider starting at 142 mg and titrating up based on response and tolerability.
Recommendation
Moderate risk: Start at 50% of normal dose, monitor closely
Polypharmacy Alert
Patient is on 5 medications. Review for drug interactions and deprescribing opportunities.
Geriatric Prescribing Principles
Physiological Changes
- Decreased renal function (GFR falls 1%/year after 40)
- Reduced hepatic blood flow and metabolism
- Increased body fat, decreased lean mass
- Reduced albumin (less protein binding)
- Increased CNS sensitivity
Prescribing Tips
- Start low, go slow
- Review Beers Criteria for PIMs
- Minimize polypharmacy
- Regular medication review
- Consider deprescribing
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