Why is this medication prescribed?

Oseltamivir is an antiviral medication used to treat and prevent influenza (commonly known as the flu). It is most effective when started within the first 48 hours of experiencing flu symptoms. Oseltamivir is typically prescribed to reduce the severity and duration of flu symptoms and to prevent the spread of the influenza virus within the body.

How should this medicine be used?

Here are some general guidelines on how oseltamivir should be used:

• Timing: It is most effective when started within 48 hours of the onset of flu symptoms. However, your healthcare provider may still prescribe it in some cases after this timeframe.
• Dosage: The dosage of oseltamivir may vary depending on factors such as age, weight, and the severity of the infection. Always follow your healthcare provider’s instructions and take the medication as prescribed.
• Administration: Oseltamivir is available in both capsule and oral suspension forms. Capsules should be swallowed whole with water. They can be taken with or without food. The oral suspension should be measured using the provided dosing device and can be taken with or without food.
• Duration: The usual course of treatment is typically 5 days for the treatment of influenza. However, your healthcare provider may adjust the duration based on your specific situation.
• Take with Food: Oseltamivir can be taken with or without food. However, taking it with food may help reduce the risk of stomach upset.
• Completing the Course: It’s important to complete the entire course of oseltamivir, even if you start feeling better before finishing the medication.
• Preventive Use: In some cases, oseltamivir may be prescribed for preventive use, especially in individuals who have been exposed to someone with confirmed influenza. Again, follow your healthcare provider’s instructions for preventive use.
• Consultation with Healthcare Provider: Always consult with your healthcare provider for guidance on the proper use of oseltamivir, especially if you have any underlying health conditions or are taking other medications.

As with any medication, there may be potential side effects or interactions, so it’s essential to communicate with your healthcare provider about your medical history and any concerns you may have. They will be able to provide personalized advice based on your specific situation.

Other uses for this medicine

Oseltamivir is primarily used for the treatment and prevention of influenza (flu) caused by influenza A and B viruses. It is not typically used for other viral infections. The medication works by inhibiting the activity of the influenza virus neuraminidase enzyme, thereby reducing the spread of the virus within the body.

What special precautions should I follow?

Special precautions should be taken when using oseltamivir, and it’s important to follow your healthcare provider’s guidance. Here are some general precautions:

• Allergies: Inform your healthcare provider if you have a known allergy to oseltamivir or any other components of the medication.
• Pregnancy and Breastfeeding: If you are pregnant, planning to become pregnant, or breastfeeding, discuss this with your healthcare provider. The use of oseltamivir during pregnancy and breastfeeding should be carefully considered, and the potential benefits weighed against the potential risks.
• Underlying Health Conditions: Inform your healthcare provider about any underlying health conditions you may have, such as kidney problems or any other medical issues. Adjustments to the dosage may be necessary in certain situations.
• Interactions with Other Medications: Provide a list of all medications, vitamins, and supplements you are currently taking to your healthcare provider. Oseltamivir may interact with other medications, and your healthcare provider will consider these potential interactions.
• Side Effects and Adverse Reactions: Be aware of potential side effects, such as nausea and vomiting. If you experience severe or persistent side effects, contact your healthcare provider.
• Timing of Treatment: Oseltamivir is most effective when started within the first 48 hours of flu symptoms. Therefore, seek medical attention promptly if you suspect you have the flu.
• Preventive Use: If oseltamivir is prescribed for preventive use (post-exposure prophylaxis), take it as directed by your healthcare provider. This is often recommended for individuals who have been in close contact with someone diagnosed with influenza.
• Children and Elderly: Dosages may need to be adjusted for children and elderly individuals. Follow your healthcare provider’s recommendations for the appropriate dosage.

Always follow your healthcare provider’s instructions and communicate any concerns or questions you may have. They can provide personalized advice based on your specific health status and circumstances.

What special dietary instructions should I follow?

Oseltamivir can be taken with or without food. Taking it with food may help reduce the risk of stomach upset.

What should I do if I forget a dose?

If you forget to take a dose of oseltamivir:

• Missed Dose: If you forget to take a dose of oseltamivir, take it as soon as you remember. However, if it’s almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule.
• Double Dose: Do not take a double dose to make up for a missed one. Taking more than the prescribed amount can increase the risk of side effects.
• Consult with Healthcare Provider: If you have questions about what to do if you miss a dose, or if you miss several doses, contact your healthcare provider for guidance.

What side effects can this medication cause?

Oseltamivir is an antiviral medication commonly used to treat and prevent influenza (the flu), and it is sold under the brand name Tamiflu. Like any medication, oseltamivir can have side effects. Common side effects may include:

• Nausea
• Vomiting
• Headache
• Dizziness
• Stomach pain

These side effects are usually mild and temporary. However, some people may experience more serious side effects. If you or someone taking oseltamivir experiences any of the following symptoms, it is important to seek medical attention:

• Allergic reactions: Symptoms may include rash, itching, swelling, severe dizziness, or difficulty breathing.
• Behavioral changes: There have been reports of neuropsychiatric events, such as self-injury and delirium, particularly in pediatric patients. It’s important to monitor for any unusual behavior, especially in children.
• Skin reactions: Some individuals may develop severe skin reactions, such as Stevens-Johnson syndrome or toxic epidermal necrolysis. These are rare but serious conditions.

It’s important to note that the list provided here is not exhaustive, and individuals may react differently to medications. Always consult with a healthcare professional if you have concerns about the side effects of oseltamivir or any other medication. Additionally, the prescribing information for the specific medication and consultation with a healthcare provider can provide more detailed and updated information on potential side effects.

What should I know about storage and disposal of this medication?

Storage and Disposal of Oseltamivir:

• Storage:
  • Store oseltamivir at room temperature, away from moisture and heat.
  • Keep the medication in its original packaging, and protect it from light.
  • Do not store it in the bathroom.
• Disposal:
  • Dispose of unused or expired medication properly.
  • Follow local regulations for medication disposal, or check with your pharmacist for guidance.
  • Do not flush oseltamivir down the toilet unless specifically instructed to do so.

In case of emergency/overdose

• Emergency: In case of a medical emergency, call your local emergency number (e.g., 911 in the United States) immediately.
• Overdose: If you suspect an overdose or experience severe symptoms such as difficulty breathing, seizures, or loss of consciousness, seek emergency medical attention. Contact your poison control center (e.g., 1-800-222-1222 in the United States) for guidance.

What other information should I know?

• Follow Healthcare Provider’s Instructions: Take oseltamivir exactly as prescribed by your healthcare provider. Do not change the dosage or stop taking the medication without consulting your healthcare provider.
• Complete the Course: Finish the entire prescribed course of oseltamivir, even if symptoms improve before the medication is finished.
• Interactions: Inform your healthcare provider about all medications, vitamins, and supplements you are taking to check for potential interactions.
• Effectiveness: Oseltamivir is most effective when started within 48 hours of the onset of flu symptoms.
• Regular Check-ups: Attend follow-up appointments with your healthcare provider as recommended.
• Inform Healthcare Provider: Report any unusual or severe side effects to your healthcare provider.
• Preventive Measures: If prescribed oseltamivir for preventive use (post-exposure prophylaxis), take it as directed.

Always consult with your healthcare provider or pharmacist if you have specific questions or concerns about the storage, disposal, or usage of oseltamivir. They can provide guidance based on your individual health situation.