Dugs used to treat Influenza infections:
Amantadine and Rimantadine
- Orally administered
- Active against Influenza A
– High resistance in the United States
- Be aware that these drugs may also be used to treat Parkinson’s disease
- They prevent viral uncoating
- Associated with anxiety and confusion
– Particularly in the elderly, who appear more likely to experience these effects when given Amantadine
- Dry mouth and urine retention are also reported, due to anticholinergic effects
- Do not give these drugs to pregnant women, as they are teratogenic
Oseltamivir
Treats Influenza A and Influenza B*
– May be given as prophylaxis
- Inhibits neuraminidase, which blocks release of the virus from host cells
- Associated with nausea and vomiting
Zanamivir
- Administered as a powder that is orally inhaled
Treats Influenza A and B*
– H1N1 “Swine Flu”
- Inhibits neuraminidase
- Associated with neutropenia, gastrointestinal upset, nasal congestion/runny nose, cough, and other effects that are similar to symptoms of the flu.
– Be aware that some authors express concerns about administering a powder drug to patients with pulmonary disease.
Peravimir
- An intravenously administered drug
- Treats both Influenza A and B
- Inhibits neuraminidase
- Associated with diarrhea, nausea, vomiting, and neutropenia
Review Influenza