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Oseltamivir Capsules Uses

Jan 02, 2025 Source: Cainiu Health
Dr. Ren Yi
Introduction
Oseltamivir capsules usually refer to oseltamivir phosphate capsules. The drug is generally indicated for the treatment of influenza A, treatment of influenza B, prevention of influenza, prophylaxis in high-risk populations, and reduction of complication risks. Oseltamivir phosphate capsules can treat influenza A. After the influenza virus infects the human body, it can cause symptoms such as high fever, cough, and fatigue.

Oseltamivir capsules usually refer to oseltamivir phosphate capsules. The drug is generally indicated for the following uses: treatment of influenza A, treatment of influenza B, prevention of influenza, prevention in high-risk populations, and reducing the risk of complications.

1. Treatment of Influenza A

Oseltamivir phosphate capsules can treat influenza A. After the influenza virus infects the body, it multiplies extensively in the respiratory tract, causing a series of symptoms such as high fever, cough, and fatigue. This medication inhibits the activity of the viral neuraminidase, reducing viral spread within the body, alleviating symptoms, and shortening the duration of the illness.

2. Treatment of Influenza B

Oseltamivir phosphate capsules also play an important role in treating influenza B. The symptoms caused by influenza B virus are similar to those of influenza A. The medication works by preventing the release and spread of the virus, thereby reducing damage to the body and helping the patient recover.

3. Influenza Prevention

Healthy individuals who have had close contact with influenza patients can take oseltamivir phosphate capsules to prevent infection. By taking the medication, individuals who have been exposed can inhibit replication of the influenza virus that may have already entered the body, thereby reducing the risk of infection.

4. Prevention in High-Risk Populations

Some high-risk groups for influenza, such as elderly individuals, children, and people with chronic diseases, can take oseltamivir phosphate capsules prophylactically before or during flu season, as directed by a physician.

5. Reducing the Risk of Complications

Timely use of oseltamivir phosphate capsules for treating influenza can effectively reduce the risk of complications caused by the flu, such as pneumonia, otitis media, and sinusitis, thus promoting overall patient health.

It is recommended to use oseltamivir phosphate capsules as directed by a physician. Self-medication should be avoided. Maintain a bland diet and avoid consuming spicy or irritating foods, such as garlic, hot pot, and mustard.

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How many 75mg oseltamivir capsules should be taken per day?
Under normal circumstances, one to two 75 mg oseltamivir capsules should be taken daily, with the specific dosage determined according to whether the purpose is treatment or prevention. If any abnormalities occur, prompt medical consultation is recommended. Adults and adolescents aged 13 years and older usually take one capsule twice daily for five consecutive days. This regimen effectively inhibits influenza virus replication, alleviates symptoms such as fever and cough, and shortens the duration of illness.
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Dr. Huang Yuhong
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How many packets of oseltamivir should an adult take at one time?
The number of oseltamivir packets an adult should take at a time depends on the purpose of use and the pharmaceutical specifications. When used to treat influenza A or B, adults should take 75 mg per dose. If the packet specification is 15 mg per bag, 5 bags should be taken each time; if the specification is 25 mg per bag, 3 bags should be taken each time. It should be taken twice daily for five consecutive days, and treatment should begin within 48 hours of symptom onset.
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Dr. Huang Yuhong
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What are the antiviral medications?
In general, antiviral drugs can inhibit or kill various viruses. Common medications include oseltamivir capsules, acyclovir cream, ribavirin granules, entecavir tablets, and foscarnet sodium injection. Antiviral drugs must be used strictly according to medical instructions and should not be purchased or taken without a prescription. The specific type of virus should be clearly identified before starting treatment to avoid inappropriate medication use. Maintaining a regular daily routine is also important in everyday life.
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Dr. Ren Yi
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The difference between oseltamivir granules and capsules
The differences between oseltamivir granules and capsules are mainly reflected in aspects such as formulation characteristics, applicable populations, administration methods, dosage specifications, and absorption speed. The specific differences are as follows. Please select the appropriate formulation according to your individual condition under the guidance of a doctor, and avoid self-medication. Granules are white or nearly white dry granular preparations, while capsules are composed of gray-white and light yellow dual
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Dr. Ren Yi
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Can ribavirin and oseltamivir be taken together?
Common formulations of ribavirin include tablets and injections, while oseltamivir is commonly available in capsule form. Ribavirin and oseltamivir can be used together under specific circumstances, but must strictly follow professional medical guidance. During treatment, maintain a regular作息 (daily routine), ensure adequate sleep to enhance the body's resistance. Diet should consist of light, easily digestible foods, with increased intake of fresh fruits and vegetables to supplement vitamins.
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Dr. Ren Yi
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If I vomited half an hour after taking oseltamivir, should I take another dose?
If no intact tablets are found in the vomit, and vomiting is mild (only one episode without persistent nausea), and the medication was taken to treat influenza (especially within 48 hours of symptom onset), the drug may have been partially absorbed but insufficiently. In such cases, a supplementary dose—either half or full—may be taken under the guidance of a physician or pharmacist to avoid compromising treatment efficacy.
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Dr. Huang Yuhong
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How many days of taking oseltamivir are needed to reduce fever caused by influenza B?
Patients with type B influenza typically experience fever resolution within 2–3 days after taking oseltamivir. Most patients will gradually see their body temperature decrease and return to normal after taking the medication, which should be taken according to the prescribed course under a doctor's guidance. If high fever persists beyond 5 days of treatment or symptoms such as difficulty breathing occur, prompt medical attention is recommended. Oseltamivir works by inhibiting the neuraminidase enzyme of the type B influenza virus.
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Dr. Ren Yi
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Can an 11-month-old baby take oseltamivir phosphate granules?
In general, whether an 11-month-old infant can take oseltamivir phosphate granules depends on the specific circumstances. If the infant has been diagnosed with influenza A or B and is within 48 hours of symptom onset, administration under medical guidance may be necessary. However, if the infant does not have influenza or the optimal treatment window has passed, the medication is not needed and will likely have no significant effect.
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Dr. Zhou Xiaofeng
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