About This Calculator
The EoE Dupilumab Dosing Calculator provides the recommended dosing schedule for Dupixent® (dupilumab) in patients treated for Eosinophilic Esophagitis (EoE). It determines the correct subcutaneous dose and frequency based on the patient's age and body weight, aligning with the FDA-approved prescribing information.
Outputs
After entering the patient's details, the calculator will display:
- Recommended Dose: The specific milligram (mg) strength of dupilumab to be administered. For EoE, this is consistently 300 mg.
- Dosing Frequency: The interval for subcutaneous injections, which can be weekly or every two weeks depending on the patient's profile.
- Administration Notes: Important context regarding the available formulations (e.g., pre-filled syringe or pen).
How to Use
To determine the appropriate dosing regimen, follow these steps:
- Select Patient Age: Choose the correct age category (≥12 years or 1 to <12 years).
- Enter Patient Weight: Input the patient's current body weight.
- Specify Units: Select whether the entered weight is in kilograms (kg) or pounds (lbs). The calculator will automatically convert units as needed.
The tool will instantly calculate and show the result. If the patient's weight is below the indicated threshold for their age group, an error message will be displayed.
Dosing Overview
The recommended dosage of dupilumab for EoE is based on age and weight, administered via subcutaneous injection.
| Patient Population | Recommended Dosage |
|---|---|
| Adults and pediatric patients aged ≥12 years | 300 mg every week |
| Pediatric patients aged 1 to <12 years weighing ≥30 kg | 300 mg every week |
| Pediatric patients aged 1 to <12 years weighing 15 kg to <30 kg | 300 mg every 2 weeks |
| Pediatric patients aged 1 to <12 years weighing <15 kg | Not indicated |
Switching Therapies
There are no specific guidelines in the prescribing information for switching patients from other EoE therapies (e.g., proton pump inhibitors, swallowed topical corticosteroids) to dupilumab. The decision to initiate dupilumab should be based on a comprehensive clinical evaluation and patient-specific factors.
Missed Dose
Instructions for a missed dose vary based on the patient's dosing schedule:
- Weekly Dosing: If a weekly dose is missed, administer the dose as soon as possible. Then, start a new weekly schedule from the date of the last administered dose.
- Every 2 Weeks Dosing: If a dose is missed, administer the injection within 7 days from the missed dose, and then resume the original schedule. If the missed dose is not administered within 7 days, wait until the next scheduled dose.
Safety Alerts
Dupilumab is associated with several important warnings and precautions. These include hypersensitivity reactions, conjunctivitis and keratitis, eosinophilic conditions, and reduction of concomitant corticosteroid dosage. Before prescribing, healthcare professionals should review the full prescribing information for a complete list of contraindications, warnings, and potential adverse events.
Frequently Asked Questions
What is the dose for a 13-year-old patient?
For any patient 12 years or older, the recommended dose is 300 mg subcutaneously every week, regardless of weight.
What is the dose for an 8-year-old weighing 25 kg (55 lbs)?
For a child aged 1 to <12 years weighing between 15 kg and 30 kg, the recommended dose is 300 mg subcutaneously every 2 weeks.
Why does the calculator show an error for a 4-year-old weighing 13 kg?
Dupilumab for EoE is not indicated for pediatric patients aged 1 to <12 years who weigh less than 15 kg. The calculator reflects this limitation from the official prescribing information.
Is there a loading dose for Dupixent when used for EoE?
No, unlike some other indications, the approved dosing for Eosinophilic Esophagitis does not include a loading dose. Treatment begins with the recommended maintenance dose.
Does the dose for adults with EoE change based on their weight?
No, for adults and adolescents (≥12 years), the dose is a flat 300 mg every week and is not adjusted for body weight.
Can the 200 mg Dupixent pen be used for EoE dosing?
No, the recommended dose for EoE is 300 mg. Patients should be prescribed the 300 mg pre-filled syringe or 300 mg pre-filled pen.
How should Dupixent be administered?
It is administered as a subcutaneous injection into the thigh or abdomen. A caregiver may also administer it into the outer upper arm. Injection sites should be rotated.
Are there dose adjustments for patients with kidney or liver problems?
No dose adjustments are recommended for patients with renal or hepatic impairment based on the current prescribing information.
References
This information is based on official medical resources. For complete and current guidance, consult the primary sources.
- DUPIXENT® (dupilumab) Prescribing Information. Regeneron Pharmaceuticals, Inc.
- FDA Label for DUPIXENT (dupilumab). U.S. Food and Drug Administration.
- Dupixent HCP Website for Eosinophilic Esophagitis. Sanofi and Regeneron Pharmaceuticals, Inc.
- Dellon ES, Rothenberg ME, Collins MH, et al. Dupilumab in Adults and Adolescents with Eosinophilic Esophagitis. N Engl J Med. 2022;387(25):2317-2330. doi:10.1056/NEJMoa2205982. View on NEJM.
I am a Registered Pharmacist under the Pharmacy Act, 1948, and the founder of PharmacyFreak.com. I hold a Bachelor of Pharmacy degree from Rungta College of Pharmaceutical Science and Research. With a strong academic foundation and practical knowledge, I am committed to providing accurate, easy-to-understand content to support pharmacy students and professionals. My aim is to make complex pharmaceutical concepts accessible and useful for real-world application.
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