Home
Back
This calculator determines a safe hydroxychloroquine dose based on patient weight and custom daily dose, assessing it against the maximum daily dose and retinopathy risk, using these guidelines:
Maximum Daily Dose (mg):
Maximum Daily Dose = Minimum(1000 mg, 5 mg/kg × Weight in kg)
Dose per kg (mg/kg):
Dose per kg = Custom Daily Dose (mg) / Weight (kg)
Retinopathy Risk:
For dose ≤ 5 mg/kg: 10-year risk 2%, 20-year risk 20%
For dose > 5 mg/kg: 10-year risk 10%, 20-year risk 40%
Where:
The calculator checks if the custom dose exceeds 5 mg/kg and calculates retinopathy risk based on duration.
This tool estimates a hydroxychloroquine dose for patients treated for conditions like malaria, lupus, or rheumatoid arthritis. Enter the patient’s weight (20–200 kg) and custom daily dose (mg), and review the results for maximum daily dose, dose per kg, and retinopathy risk.
Example: Weight 200 kg, Custom Daily Dose 5 mg:
Hydroxychloroquine Dose Calculation:
Patient's Weight: 200.0 kg
Custom Daily Dose: 5.0 mg
📈 Maximum daily dose of hydroxychloroquine for your patient: 1000.0 mg.
Your custom daily dose (0.03 mg/kg) does not exceed the recommended 5 mg per kilogram.
Retinopathy Risk:
10-year: 2%
20-year: 20%
⚠️ This tool is for information purposes only...
Consult a healthcare provider before administering.
Hydroxychloroquine treats malaria, lupus, rheumatoid arthritis, and other autoimmune conditions, but is not proven effective for COVID-19.
It’s based on weight, with a maximum of 1000 mg/day or 5 mg/kg/day, whichever is lower, to minimize retinopathy risk.
Long-term use can cause irreversible retinopathy, with risks increasing over time (2% at 10 years, 20% at 20 years for doses ≤ 5 mg/kg).
Yes, but dosing must be adjusted based on weight and monitored closely, with pediatric guidance from a healthcare provider.
Duration depends on the condition; long-term use requires regular screening for retinopathy, especially after 5 years.