Oseltamivir Phosphate

Oseltamivir Phosphate is an antiviral medication indicated for the treatment of flu virus or influenza. This is used in adults and children from birth. It is when the flu virus is known to be going around in your community. This may also be used in adults and children one year and over to prevent influenza. As well as those who’ve been in contact with someone diagnosed with flu during a flu outbreak.

Influenza is a viral infection that attacks your respiratory system. Specifically, it attacks your nose, lungs, and throat. This condition is commonly known as the flu. For most people, influenza resolves on its own. But sometimes, influenza and its complications can be deadly. People at higher risk of developing flu complications include:

  • Young children under age 5, especially those under 2 years
  • Adults older than the age of 65
  • Pregnant women and women up to two weeks postpartum
  • residents of nursing home and other long-term care facilities
  • People with weakened immune systems
  • People who are very obese with a body mass index of 40 or higher
  • People who have chronic illnesses such as heart disease, asthma, diabetes, kidney disease, and liver disease

Common signs and symptoms of influenza may be:

  • Aching muscles
  • Headache
  • Chills and sweats
  • Fatigue and weakness
  • Sore throat
  • Nasal congestion
  • Dry or persistent cough
  • Fever over 38 C

This medication helps make the symptoms less severe and shortens the recovery time by 1 to 2 days. This drug stops the flu virus from spreading around the body.

Oseltamivir Phosphate is a type of medicine called a neuraminidase inhibitor. This blocks the actions of influenza virus types A and B virus in your body. This product is supplied as a capsule for oral use. Each capsule contains Oseltamivir Phosphate as an active ingredient. In addition to the active ingredient, each capsule contains sodium stearyl fumarate, croscarmellose sodium, and talc. It is a white crystalline solid. This is available in the dosage forms of 30 mg, 45 mg, and 75 mg. Oseltamivir Phosphate is a prescription approved by the Food and Drug Administration (FDA).

How does Oseltamivir Phosphate work?

Once the flu virus comes into the body it attacks cells in the airways. Wherein, it reproduces to form lots of new copies of the virus. The new reproductions of the virus leave the first cells and move on to infect neighboring cells. It is where the process is repeated. After a couple of days, enough cells have been infected that the patient feels flu symptoms such as fever, headache, and general aches and pains. These usually continue for about a week until the body’s immune system kills the virus. To leave one cell and infect another, the flu virus uses a chemical helper called neuraminidase.

Oseltamivir Phosphate works by stopping this chemical helper from working. Without it, newly formed copies of the virus can’t leave the infected cells to infect other cells. This prevents the flu virus from spreading and so confines the infection to a smaller area. This makes the symptoms of the infection less severe. This also makes it is easier for the body’s immune system to kill the virus.

How to use Oseltamivir Phosphate?

Oseltamivir Phosphate is to be taken by mouth. This is usually taken twice a day for 5 days or as directed by your doctor. You may take each dose with or without a meal. Swallow the medicine as a whole with a full glass of water. Do not break, chew, or crush it. Remember to take it at the same time and in the same way every day. For the best benefit, take it regularly.

The recommended dosage is based on your medical condition, age, weight, and response to the treatment. You must take this medication exactly as it is given by your doctor. Do not in a larger or smaller amount. It may worsen or cause another complication. Let your doctor know if your condition does not improve or if it gets worse.

What are the side effects of Oseltamivir Phosphate?

Common side effects:

  • Vomiting
  • Nausea
  • Dizziness
  • Diarrhea
  • Nosebleed
  • Headache
  • Sleep problems or insomnia
  • Eye redness or discomfort
  • Cough or respiratory problems

Call your doctor right away if you have these unlikely but serious side effects:

  • Tremors or shaking
  • Sudden confusion
  • Unusual behavior
  • Hallucinations (seeing or hearing things that are not there)

Get emergency medical help if you these signs of an allergic reaction:

  • Hives or itching
  • Difficulty or trouble breathing
  • Swelling of your face, lips, throat, or tongue

Warnings and Precautions

  • Before taking, let your doctor know if you have ever had any medical history, especially of kidney disease.
  • This drug may make you dizzy or drowsy. Do not use any machinery or do anything that needs your alertness.
  • Do not take this medication if you are allergic to it. This drug may contain some ingredients that cause an allergic reaction.
  • While having this treatment, avoid alcoholic beverages. Alcohol may increase drug levels.
  • Do not share this or any of your medications with others even if they have the same symptoms as yours.
  • This should only be used when needed during pregnancy. If you are breastfeeding women, consult your doctor first before taking a dose.
  • If you missed a dose, take it as soon as you remember it. If it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule.
  • Tell your doctor if you have any other medications such as vitamins or herbal supplements.
  • Some people using this drug have had sudden unusual changes in mood or behavior. Even without this medication, anyone with influenza can have neurologic or behavioral symptoms.
  • This medication works best when the amount of medicine in your body is kept at a constant level.
  • Do not suddenly stop taking this medication. It may allow the virus to continue to grow.
  • You should not use this for the treatment of other conditions.
  • Keep this far from the heat, moisture, and reach of children or pets.