Medications for Viral Upper Respiratory Infections (Colds and Influenza)
The information provided here is meant to give you a general idea about each of the medicines listed below. Only the most general side effects are included, so ask your doctor if you need to take any special precautions.Use each of these medicines as recommended by your doctor or according to the instructions provided. If you have further questions about usage or side effects, contact your doctor.Only influenza can be specifically treated with antiviral medicine, and those medicines should be used only in serious cases because they may have unwanted side effects. Most people with the flu do not need antiviral medicine. If you have the flu, check with your doctor to see if you need antiviral medicine. You will need it if you are in a high-risk group or if you have a severe illness (like breathing problems). In general, uncomplicated influenza and the common cold should not be treated with antibiotics for several reasons:
- Antibiotics, though generally safe, have side effects and are not as harmless as the common cold.
- Antibiotics do not cure influenza or the common cold since both are caused by viruses; they only work against bacterial infections.
- Misuse and overuse of antibiotics has caused a worldwide crisis—the emergence of resistant bacteria. Some infections are now resistant to every known antibiotic.
Prescription MedicationsOseltamivir (Tamiflu) and Zanamivir (Relenza)Amantadine (Symmetrel) and Rimantadine (Flumadine)
Prescription MedicationsOseltamivir (Tamiflu) and Zanamivir (Relenza)Oseltamivir and zanamivir are used in adults and children to prevent or treat infections with types A and B influenza viruses. For the 2012-2013 flu season, the Centers for Disease Control and Prevention (CDC) recommends the use of these two medicines.Oseltamivir and zanamivir interfere with specific viral chemical processes. Like other antiviral medicines, oseltamivir and zanamivir do not cure the flu, but may shorten the duration of illness if taken within 48 hours of when symptoms first appear. In addition to treating flu symptoms, these medicines may reduce the spread of the flu virus to others. Zanamivir may worsen asthma or chronic obstructive pulmonary disease (COPD) . Some kinds of seasonal influenza virus are resistant to oseltamivir in the US. The FDA has warned of possible adverse effects in patients, especially children, taking oseltamivir. In some cases, these effects (such as hallucinations, delirium, abnormal behavior) resulted in injury and death. Amantadine (Symmetrel) and Rimantadine (Flumadine)Amantadine and rimantadine affect only influenza A viruses. They are used for treatment, as well as for prevention in high-risk people during an epidemic. These medicines do not cure the flu, but may shorten the duration of illness if taken within 48 hours of when symptoms first appear. Viral resistance has often been a problem with both of these medicines. Amantadine is approved for the treatment and prevention of the flu for those aged one year and older. Rimantadine is approved for treatment in those aged 13 years and older and for prevention for those aged one year and older.Possible side effects include:
- Mood and mental changes
- Dry mouth
- Loss of coordination
Over-the-counter MedicationsWith each type of OTC medicine, the active ingredients are listed. There are many brand name preparations for each of these active ingredients. Only a few brand names are listed here, but be aware that there are other brands to choose from. Read labels and look for the active ingredients when choosing a product.The Food and Drug Administration (FDA) recommends that OTC cough and cold products should not be used to treat infants or children less than two years old and supports not using them in children less than four years old. Rare but serious side effects have been reported, including death, convulsions, rapid heart rates, and decreased levels of consciousness. OTC cough and cold products include decongestants, expectorants, antihistamines, and antitussives (cough suppressants). The FDA is still reviewing data concerning the safety of these products in children aged 2-11 years. There have been serious side effects reported in this age group as well.Decongestants Common names include:
- Over-stimulation, such as nervousness and insomnia
- Raised blood pressure
- Rebound congestion—If these drugs are used for long periods of time, membranes get used to the effects, so that stopping the medicine produces the swelling and congestion that was originally being treated. This is a common problem with nose drops and sprays.
- Drying of secretions, which impairs their clearance and may lead to complications (such as sinusitis , otitis , and pneumonia )
- Retention or difficulty passing urine
- Urinary problems due to an enlarged prostate gland
- Breathing problems
- Stomach irritation, ulceration, and bleeding
- Allergic reactions
- Kidney damage (very rare)
- Liver damage (very rare)
- Allergic reactions that damage blood cells or cause rashes
- Taking too much can damage the liver or kidneys
- Codeine (available by prescription)
- Take your medicine as directed. Do not change the amount or the schedule.
- Do not stop taking them without talking to your doctor.
- Do not share them.
- Know what results and side effects to look for. Report them to your doctor.
- Some drugs can be dangerous when mixed. Talk to a doctor or pharmacist if you are taking more than one drug. This includes OTC medicine, herb or dietary supplements.
- Plan ahead for refills so you don’t run out.
- New symptoms develop after the initial onset
- Significant fever (over 101°F for colds, and fever beyond 3-4 days for influenza)
- Yellow, green, or bloody sputum (secretions from your lungs)
- Persistence of symptoms beyond two weeks (most colds last 1-2 weeks)
- Localized pain anywhere (ears, sinuses, head, chest)
- Yellow secretions on your tonsils
- Difficulty eating, drinking, or swallowing
- Difficulty breathing
- Changes in your mental status
- Neck stiffness
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