Antiviral

Antiviral drugs are a class of medication used specifically for treating viral infections, rather than bacterial, fungal or other infections. Most antivirals are used for a specific type of virus, while a broad-spectrum antiviral is effective against a wider range of viruses. Although there are a number of broad-spectrum antibiotics, there are very few broad-spectrum antiviral drugs, and the few in existence are generally only effective against a specific family of viruses.

Tenofovir and lamivudine are antiviral drugs which are designed for HIV, but may be effective against other retroviruses. | last4Valacyclovir is often used for Herpes Simplex Virus (HSV) I and II, as well as for Varicella Zoster Virus (VZV), another herpesviruses. | last4Valganciclovir is used for a broader spectrum of herpesviruses, including HSV I and II, VZV, cytomegalovirus (CMV), Epstein-Barr virus (EBV), and is somewhat effective against Human Herpesvirus 6 (HHV6). | last4Ribavirin is the only antiviral drug effective against RNA viruses, although it is rarely used due to its toxic side-effects.

Studies

 * 2006, Use of valganciclovir in patients with elevated antibody titers against Human Herpesvirus-6 (HHV-6) and Epstein-Barr Virus (EBV) who were experiencing central nervous system dysfunction including long-standing fatigue. (Abstract)
 * 2012, Response to valganciclovir in chronic fatigue syndrome patients with human herpesvirus 6 and Epstein-Barr virus IgG antibody titers (Abstract)
 * 2017, A famciclovir + celecoxib combination treatment is safe and efficacious in the treatment of fibromyalgia. (Full text)
 * 2018, Migraine Headache Treated with Famciclovir and Celecoxib: A Case Report. (Full text)