Anti-Viral Drugs are medicines that are used to treat or control virus
infections. Just as antibiotics are used for bacterial infections, so also
there are antiviral drugs for preventing the growth of various viruses in
the human body. Anti viral drugs do not destroy their target pathogens but
they prevent their development. This group of drugs belong to the one class
of antimicrobials, where a larger class includes
antibiotic,
antifungal and
antiparasitic drugs. Anti-viral drugs are available only with a physician's
prescription and are sold in tablets, liquid or inhaler forms.
Virus Treated By Antiviral Drugs
Most of the antiviral drugs
available in the market today are used to treat or prevent the following:
- HIV virus
- Herpes virus
- Hepatitis B and C viruses
- Influenza A and B viruses
Popular Anti Viral Drugs and the Viruses They Treat
| Drugs |
Virus |
| Vidarabine |
Herpes |
| Acyclovir |
Herpes simplex (HSV) |
| Gancyclovir and Valcyte(valganciclovir) |
Cytomegalovirus (CMV) |
| Nucleoside-analog reverse transcriptase inhibitors (NRTI): AZT
(Zidovudine), ddI (Didanosine), ddC (Zalcitabine), d4T (Stavudine), 3TC
(Lamivudine) |
Retroviruses (HIV) |
| Non-nucleoside reverse transcriptase inhibitors (NNRTI):
Nevirapine, Delavirdine |
Retroviruses (HIV) |
| Protease Inhibitors: Saquinavir, Ritonavir, Indinavir, Nelfinavir |
HIV |
| Ribavirin |
Broad spectrum: HCV, HSV, measles, mumps, Lassa fever |
| Amantadine / Rimantadine |
Influenza A strains |
| Relenza and Tamiflu |
Influenza strains A and B |
| Pleconaril |
Picornaviruses |
| Interferons |
Hepatitis B and C |
How do anti viral drugs work?
Anti-Virals are used to treat
infections caused by viruses. Several drugs are there, and each is used for
specific kinds of viral infections. Rather than killing the viruses,
anti-viral drugs block steps in the process through which viruses reproduce.
Some may also stimulate the immune system so that the body can fight the
viruses itself.
Uses of Antiviral Drugs
Any virus infection that make you sick can
be treated using anti viral drug , which makes your illness milder and make
you feel better faster. These drugs prevent serious influenza complications.
So the sooner the patient gets treatment with an antiviral, the quicker is
its chances of recovery. Such influenza antivirus drugs can also be given to
someone as a preventive measure in the sense that he/she is not sick but is
in constant touch with a person with influenza. When used to prevent the
flu, antiviral drugs are about 70% to 90% effective. Many believe that there
is no need for any treatment for a viral infection like cold, influenza and
allow it to let it run its course. But there are anti viral
prescription drugs
that can be used for treatment.