Penciclovir: Difference between revisions
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'''Penciclovir''' is an [[antiviral | == Penciclovir == | ||
[[File:Penciclovir.svg|thumb|right|Chemical structure of Penciclovir]] | |||
'''Penciclovir''' is an [[antiviral drug]] used primarily for the treatment of [[herpes simplex virus]] infections. It is a [[nucleoside analog]] that inhibits viral [[DNA polymerase]], thereby preventing the replication of viral DNA. | |||
== Mechanism of Action == | == Mechanism of Action == | ||
Penciclovir | |||
Penciclovir is a [[guanine]] analog that is phosphorylated by viral [[thymidine kinase]] to its active form, penciclovir triphosphate. This active form competes with deoxyguanosine triphosphate for incorporation into viral DNA. Once incorporated, it acts as a chain terminator, halting DNA synthesis and thereby inhibiting viral replication. | |||
== Clinical Use == | |||
Penciclovir is primarily used in the treatment of [[herpes labialis]], commonly known as cold sores, caused by [[Herpes Simplex Virus Type 1]] (HSV-1). It is available as a topical cream and is applied directly to the affected area. The drug is effective in reducing the duration and severity of symptoms when applied at the onset of an outbreak. | |||
== Pharmacokinetics == | == Pharmacokinetics == | ||
Penciclovir is poorly absorbed when administered orally, which is why it is typically used as a topical agent. Its [[bioavailability]] is low, and it is primarily excreted unchanged in the urine. The drug has a half-life of approximately 2 to 3 hours in the body. | |||
== Side Effects == | == Side Effects == | ||
== | The most common side effects of penciclovir are local skin reactions, including redness, itching, and mild burning at the site of application. Systemic side effects are rare due to its limited absorption. | ||
Penciclovir | |||
== Related Drugs == | |||
Penciclovir is related to [[famciclovir]], which is an oral prodrug that is converted to penciclovir in the body. Famciclovir is used for systemic treatment of herpes infections, including [[herpes zoster]] and [[genital herpes]]. | |||
== | == Related Pages == | ||
* [[Antiviral drug]] | * [[Antiviral drug]] | ||
* [[Herpes simplex virus]] | |||
* [[Nucleoside analog]] | |||
* [[Thymidine kinase]] | |||
[[Category:Antiviral drugs]] | [[Category:Antiviral drugs]] | ||
Latest revision as of 03:49, 13 February 2025
Penciclovir[edit]
Penciclovir is an antiviral drug used primarily for the treatment of herpes simplex virus infections. It is a nucleoside analog that inhibits viral DNA polymerase, thereby preventing the replication of viral DNA.
Mechanism of Action[edit]
Penciclovir is a guanine analog that is phosphorylated by viral thymidine kinase to its active form, penciclovir triphosphate. This active form competes with deoxyguanosine triphosphate for incorporation into viral DNA. Once incorporated, it acts as a chain terminator, halting DNA synthesis and thereby inhibiting viral replication.
Clinical Use[edit]
Penciclovir is primarily used in the treatment of herpes labialis, commonly known as cold sores, caused by Herpes Simplex Virus Type 1 (HSV-1). It is available as a topical cream and is applied directly to the affected area. The drug is effective in reducing the duration and severity of symptoms when applied at the onset of an outbreak.
Pharmacokinetics[edit]
Penciclovir is poorly absorbed when administered orally, which is why it is typically used as a topical agent. Its bioavailability is low, and it is primarily excreted unchanged in the urine. The drug has a half-life of approximately 2 to 3 hours in the body.
Side Effects[edit]
The most common side effects of penciclovir are local skin reactions, including redness, itching, and mild burning at the site of application. Systemic side effects are rare due to its limited absorption.
Related Drugs[edit]
Penciclovir is related to famciclovir, which is an oral prodrug that is converted to penciclovir in the body. Famciclovir is used for systemic treatment of herpes infections, including herpes zoster and genital herpes.
