Tamiflu (Oseltamivir) is an antiviral medication used to treat and prevent influenza (flu) by stopping the virus from multiplying in the body. It is most effective when taken within 48 hours of flu symptom onset (i.e. fever, chills, headache, muscle or body aches, cough, sore throat, runny nose, fatigue, nausea, vomiting, and diarrhea)

Treatment-Adults: 75mg twice a day for 5 days
Prevention-Adults: 75mg daily for 10 days
Pediatric patients (2 weeks-12 years) are dosed on body weight

Tamiflu also comes in 30 mg and 45 mg capsules, often used for children or adults who require adjusted dosing.
For children ages 2 weeks to 12 years, dosing is based on weight:
• less than 15 kg (33 lbs): 30 mg twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• 15-23 kg (33-51 lbs): 45 mg twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• 23-40 kg (51-88 lbs): 60 mg twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• greater than 40 kg (88 lbs): 75 mg twice daily for 5 days (treatment) or once daily for 10 days (prevention).

These doses help ensure that younger children or those with smaller body weight get an appropriate amount of medication. Adjustments to dosing should be guided by a healthcare provider, particularly in younger children.

Tamiflu is also available as an oral suspension, typically for young children or individuals who have difficulty swallowing capsules. The liquid form is usually prescribed for children under the age of 1 or for those who need precise weight-based dosing.
The standard concentration is 6 mg/mL, and dosing is based on body weight:
• less than 3 kg (6.6 lbs): 1.5 mL twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• 3-4 kg (6.6-8.8 lbs): 2.5 mL twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• 4-6 kg (8.8-13.2 lbs): 3.5 mL twice daily for 5 days (treatment) or once daily for 10 days (prevention).
• 6-10 kg (13.2-22 lbs): 5 mL twice daily for 5 days (treatment) or once daily for 10 days (prevention).

**Note: The two capsules of Tamiflu should not be taken together. For treatment, the recommended dosing is one capsule twice daily, about 12 hours apart. Taking them together could increase the risk of side effects without increasing effectiveness.

Common side effects include nausea, vomiting, headache, and stomach pain (take with food). Some people may also experience mild psychological symptoms, like mood changes, hallucinations, unusual behavior, sudden confusion, which are generally rare but should be reported to a healthcare provider if they occur.

As a Category C drug, Tamiflu may pose risks in pregnancy but can be used if the benefits outweigh potential risks, particularly given higher flu risks for pregnant individuals.

Disclaimer:This content is strictly the opinion of Dr. Eilbra Younan, and all viewers of this content are advised to consult with their doctors regarding specific health questions, especially those taking prescriptions, and/or over-the-counter(OTC) medications before starting this or any nutrition or lifestyle change. This content is for informational and educational purposes only, and is not intended to provide medical advice or take the place of medical advice or treatment from a personal doctor. Neither Dr. Eilbra Younan and/or publisher of this content takes responsibility for possible health side-effects/consequences of any person or persons reading or following the information in this educational content.

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