Medicines Used for Viral infections
Viral infections are illnesses caused by viruses, such as colds, flu, cold sores, chickenpox and shingles. Many get better on their own with rest and fluids. Antibiotics do not work against viruses. For a few infections, such as herpes and flu, a doctor may prescribe an antiviral medicine, which works best when started early.
Pharmacist review in progress. This page is based on the sources listed below and is being checked by our registered pharmacist.
Medicines used for Viral infections
These active ingredients are in medicines whose approved uses include Viral infections. Brands are listed A to Z, not ranked. A doctor or pharmacist decides which medicine is right for you.
Acyclovir
- Acivir 400 · 400 mg tablet
Oseltamivir
- Fluvir 75 · 75 mg capsule
Common questions
Do antibiotics work for viral infections?
No. Antibiotics act only on bacteria, so they do not help with flu, colds, shingles or chickenpox. Taking them when they are not needed causes side effects and helps bacteria become resistant. A doctor decides which medicine, if any, is needed.
When is an antiviral medicine used?
For a few infections a doctor may prescribe one, such as acyclovir for shingles or herpes and oseltamivir for flu. They work best when started early, for shingles within 3 days of the rash and for flu within about two days. See a doctor promptly.
How can viral infections be prevented?
Vaccines help prevent some, such as flu and chickenpox. Washing hands, covering coughs and staying home when unwell reduce spread. Ask your doctor or pharmacist which vaccines suit you.
Sources
- Flu. NHS (UK)
- Shingles. NHS (UK)
- Aciclovir. NHS (UK)
- Influenza antiviral medications: summary for clinicians. Centers for Disease Control and Prevention (US)