Idoxuridine

Idoxuridine is an antiviral medication that is primarily used in the treatment of herpes simplex virus. It is a nucleoside analogue, a type of drug that works by inhibiting the replication of viral DNA.

Mechanism of Action

Idoxuridine works by being incorporated into the viral DNA during replication. This causes a disruption in the DNA structure, which inhibits further replication of the virus. The drug is a thymidine analogue, meaning it mimics the structure of the natural DNA component, thymidine. When the virus attempts to replicate its DNA, it mistakenly incorporates idoxuridine instead of thymidine, leading to faulty DNA and preventing the virus from spreading.

Uses

Idoxuridine is primarily used to treat herpes simplex virus infections. It can be used for both primary and recurrent infections. The drug is typically applied topically as an eye drop for herpes simplex keratitis, an infection of the eye. It can also be used for skin infections caused by the herpes simplex virus.

Side Effects

Like all medications, idoxuridine can cause side effects. The most common side effects include local irritation, redness, and swelling at the site of application. In rare cases, idoxuridine can cause more serious side effects such as allergic reactions.

Contraindications

Idoxuridine should not be used in individuals who have a known hypersensitivity to the drug. It should also be used with caution in individuals with a weakened immune system, as the drug can potentially cause a severe systemic infection.

See Also

• Antiviral drug
• Herpes simplex virus
• Nucleoside analogue

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  Chemical structure of Idoxuridine
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  Synthesis pathway of Idoxuridine
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