title: Valacyclovir and famciclovir therapy in herpes zoster.
mesh_terms: D015075:2-Aminopurine / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D000212:Acyclovir / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D000368:Aged; D000998:Antiviral Agents / Q000009:adverse effects / Q000627:therapeutic use*; D004311:Double-Blind Method; D000077595:Famciclovir; D005767:Gastrointestinal Diseases / Q000139:chemically induced; D006261:Headache / Q000139:chemically induced; D006562:Herpes Zoster / Q000150:complications / Q000188:drug therapy*; D006801:Humans; D008875:Middle Aged; D009325:Nausea / Q000139:chemically induced; D009437:Neuralgia / Q000209:etiology / Q000517:prevention & control; D010146:Pain / Q000209:etiology / Q000517:prevention & control; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D000077483:Valacyclovir; D014633:Valine / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*
chemical_list: D000998:Antiviral Agents; D015075:2-Aminopurine; D014633:Valine; D000077483:Valacyclovir; D000077595:Famciclovir; D000212:Acyclovir