Xofluza (baloxavir marboxil) is an antiviral medication used to treat influenza in people 12 years and older.
The dosage depends primarily on body weight, with a single dose administered orally.
It is most effective when taken within 48 hours of flu symptom onset.
Doctronic.ai offers personalized telehealth consultations to help with dosage questions and connect you to licensed doctors 24/7.
Always follow your healthcare provider's instructions and consult a doctor if you miss a dose or experience side effects.
Xofluza is a prescription antiviral medication designed to combat the flu by targeting the virus early in its cycle. Unlike other flu treatments that require multiple doses, Xofluza offers the convenience of a single oral dose. The correct dosage varies based on your weight, making it important to understand how much to take for safe and effective treatment.
This guide breaks down the recommended dosages, timing, and important considerations to help you get the most from your Xofluza treatment. If you have any questions or need personalized advice, Doctronic.ai provides instant AI-powered consultations and access to licensed doctors across all 50 states.
Form |
Strength |
Typical Adult Dose |
Typical Children’s Dose |
Frequency |
Route |
Maximum Daily Dose |
|---|---|---|---|---|---|---|
Tablet |
20 mg |
40 mg (2 tablets) if 80 kg or more |
40 mg (2 tablets) if 80 kg or more |
Single dose |
Oral |
40 mg |
Tablet |
20 mg |
30 mg (1.5 tablets) if 80 kg or more but less than 80 kg |
30 mg (1.5 tablets) if 80 kg or more but less than 80 kg |
Single dose |
Oral |
30 mg |
Tablet |
20 mg |
20 mg (1 tablet) if less than 80 kg |
20 mg (1 tablet) if less than 80 kg |
Single dose |
Oral |
20 mg |
Xofluza is approved for treating acute uncomplicated influenza in patients 12 years and older. The dose is a single oral administration based on body weight:
40 mg if body weight is 80 kg or more
30 mg if body weight is 80 kg or less, but more than 40 kg
20 mg if body weight is 40 kg or less
The single-dose design helps improve compliance, but it must be taken within 48 hours of symptom onset for best results.
While Xofluza is primarily used for treatment, some clinicians may consider it off-label for post-exposure prophylaxis in certain cases. Dosage recommendations for this use are not standardized, so professional medical advice is essential.
Adults 12 years and older receive a single dose based on weight:
40 mg if 80 kg or more
30 mg if between 40 kg and 80 kg
20 mg if less than 40 kg
This single-dose regimen is designed to simplify treatment and reduce the risk of missed doses.
Xofluza is approved for children 12 years and older with the same weight-based dosing as adults. It is not recommended for children under 12 years old due to limited safety data.
Xofluza is intended as a single-dose treatment. If you miss taking the medication within the 48-hour window after flu symptoms begin, the effectiveness may decrease. In such cases, contact a healthcare provider promptly. They may recommend alternative treatments or supportive care.
If you are unsure about your dosing schedule or timing, Doctronic.ai offers quick telehealth consultations to clarify your treatment plan.
Currently, no dosage adjustment is recommended for patients with mild to moderate renal impairment. However, data is limited for severe renal impairment, so medical supervision is advised.
There are no specific dose adjustments recommended for patients with mild to moderate liver impairment. The safety of Xofluza in severe hepatic impairment has not been established.
Since Xofluza is given as a single dose, overdose is rare but possible if multiple doses are taken accidentally. Symptoms of overdose are not well documented, but any suspected overdose should prompt immediate medical attention.
Warnings include:
Use only within 48 hours of symptom onset for effectiveness.
Not a substitute for annual influenza vaccination.
Possible side effects include diarrhea, bronchitis, nausea, and headache.
Inform your doctor about all medications and supplements to avoid interactions.
Take the full dose as prescribed, ideally within 48 hours of flu symptoms starting.
Swallow tablets whole with water; do not crush or chew.
Inform your healthcare provider if you are pregnant, breastfeeding, or have chronic health conditions.
Keep hydrated and rest while recovering from the flu.
Consult a doctor if symptoms worsen or do not improve within a few days.
Understanding the right dosage for your specific situation can be challenging. Doctronic.ai combines advanced AI with access to licensed doctors to provide personalized answers about Xofluza dosing and flu treatment. Whether you want a quick dosage recommendation or a telehealth video visit, Doctronic is available 24/7 in all 50 states for under $40.
Visit Doctronic.ai today to get tailored advice that fits your health needs and lifestyle.
Xofluza offers a convenient, effective option for treating the flu with a simple, weight-based single dose. The key to success is early administration within 48 hours of symptom onset. Always follow your healthcare provider’s instructions and reach out for professional guidance if you have questions or concerns.
For personalized help, telehealth services like Doctronic.ai make it easy to get expert advice quickly without leaving home. This approach ensures you get the right dose, the right care, and peace of mind during flu season.
Xofluza is most effective within 48 hours of symptom onset. Taking it later may reduce its benefits. Contact a healthcare provider for alternative options.
Xofluza is not approved for children under 12 due to limited safety data. Consult a pediatrician for appropriate flu treatments for younger children.
Always inform your doctor about all medications you are taking. Xofluza should not be used with other antiviral flu drugs without medical advice.
Common side effects include nausea and headache. If side effects are severe or persistent, contact your healthcare provider immediately.
Doctronic.ai offers AI-powered answers and access to licensed doctors 24/7 to help with dosage questions and telehealth consultations.
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