Oseltamivir
Uses of Oseltamivir
Oseltamivir is mainly used to manage and prevent influenza A and B. It belongs to the group of antiviral medications known as neuraminidase inhibitors.
Additionally, it can be used for post-exposure prevention following contact with a clinically diagnosed influenza case when the influenza virus is circulating in the community.
Side effects of Oseltamivir
Nausea
Vomiting
Diarrhoea
Abdominal pain
Headache
How Oseltamivir works
Oseltamivir is an antiviral medicine.
It works by blocking the action of an enzyme called neuraminidase, which is present on the surface of the influenza virus. By inhibiting neuraminidase, Oseltamivir prevents new viral particles from being released. This effectively stops the virus from spreading within the body.
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Expert Advice
Dosage Forms Available
Oseltamivir is available for oral use as capsules and an oral suspension.
Age and Dose Restrictions
Oseltamivir is suitable for use in both adults and children.
Contraindications
Oseltamivir is contraindicated in patients with known serious hypersensitivity to any of its components.
It is also contraindicated in patients with end-stage renal disease who are not receiving dialysis.
Other Medications to Avoid
Oseltamivir may interact with live attenuated influenza vaccines (such as the nasal spray flu vaccine) and certain renally eliminated medications (such as chlorpropamide, methotrexate, and phenylbutazone).
Overdose and Missed Dose
An overdose of Oseltamivir may lead to nausea and vomiting. If these symptoms occur, please contact your doctor and follow their instructions.
If a dose of Oseltamivir is missed, take it as soon as you remember unless it is close to the time for your next dose. Do not take two doses at one time to make up for the missed dose.
Management of Side Effects
Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.
To manage nausea, take Oseltamivir with food.
Staying hydrated may help alleviate some side effects like diarrhoea.
Use in Driving and Operating Machinery
There is no evidence suggesting that Oseltamivir affects the ability to drive or operate heavy machinery. However, always be cautious and avoid engaging in such activities if feeling unwell due to the flu.
Use in Pregnancy and Lactation
Oseltamivir is usually only recommended by doctors during pregnancy if the benefits outweigh the potential risks.
Small amounts of Oseltamivir are excreted into breast milk. Nursing mothers should consult their doctor before taking this medication.
Caution in Other Conditions
Patients with pre-existing renal impairment should use Oseltamivir with caution. Dosage adjustments based on creatinine clearance may be needed.
Individuals with severe hepatic disorders should also consult their doctor before using Oseltamivir.
Special Dietary and Lifestyle Recommendations
During flu season, maintaining a balanced diet rich in vitamins and minerals can support immune function. Include plenty of fruits, vegetables, and lean proteins in your diet.
Regular moderate exercise can help boost overall health; however, rest is crucial when battling influenza.
Staying hydrated is particularly important during illness periods; aim to drink at least eight glasses of water a day.
Practising good hygiene such as frequent hand washing and avoiding close contact with sick individuals can help prevent the spread of influenza.
Frequently asked questions
Does Oseltamivir interfere with the effectiveness of the flu vaccine?
No, Oseltamivir does not interfere with the effectiveness of the flu vaccine. However, it is essential to note that Oseltamivir is not a substitute for the flu vaccine.
Can Oseltamivir be used for post-exposure prevention of the flu?
Yes, Oseltamivir can be used for post-exposure prevention in individuals aged one year and older following contact with a clinically diagnosed influenza case when the influenza virus is circulating in the community.
Does Oseltamivir contain any steroids?
No, Oseltamivir does not contain any steroids. It is an antiviral medication that belongs to the class of neuraminidase inhibitors.
Can Oseltamivir be given to infants?
The medication can be used by infants as young as 2 weeks old for treating influenza, strictly under your doctor's guidance.
Can I take Oseltamivir for colds?
This medicine is typically used to treat influenza. You should only take Oseltamivir if it is recommended by your doctor.
Are there any specific foods or drinks to avoid while taking Oseltamivir?
There are no specific foods or drinks that you need to avoid while taking Oseltamivir unless advised by your doctor.
Can I discontinue Oseltamivir once I feel better?
You should continue taking Oseltamivir for as long as your doctor has prescribed, even if you start feeling better. Discontinuing the medicine without consulting your doctor could lead to a relapse or worsening of symptoms.
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