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Famciclovir is a guanosine analogue antiviral drug used for the treatment of various herpesvirus infections, most commonly for herpes zoster (shingles). It is a prodrug form of penciclovir with improved oral bioavailability. Famciclovir is marketed under the trade name Famvir . Famciclovir was patented in 1983 and approved for medical use in 1994.
Because penciclovir is absorbed poorly when given orally (by mouth) it is more often used as a topical treatment. It is the active ingredient in the cold sore medications Denavir (NDC 0135-0315-52), Vectavir and Fenivir. Famciclovir is a prodrug of penciclovir with improved oral bioavailability. Penciclovir was approved for medical use in 1996. [2]
A cold sore [a] is a type of herpes ... which can have itching and burning sensation as side effects and docosanol. [40] [1] ... Famciclovir or valacyclovir, ...
Cold sores versus canker sores To make a true diagnosis of the cold sore virus, your doctor needs to take a culture from the area and send it to the lab for analysis, says Dr. Friedman.
Treatment: There are several antiviral medications to treat shingles, including acyclovir, valacyclovir, and famciclovir, per the CDC. Cool compresses, oatmeal baths, and calamine lotion may also ...
Aciclovir risks causing resistance to antiviral agents, and in 1% to 10% of cases can cause unpleasant side effects. [19] Aciclovir taken by mouth does not appear to decrease the risk of pain after shingles. [20] In those with herpes of the eye, aciclovir may be more effective and safer than idoxuridine. [21]
It helps relieve the pain and discomfort and speeds healing of sores. It only comes in caplets and its advantage is that it has a longer duration of action than acyclovir. [21] Famciclovir is another antiviral drug that belongs to the same class. Famciclovir is a prodrug that is converted to penciclovir in the body. The latter is the one active ...
Oral herpes involves the face or mouth. It may result in small blisters in groups, often called cold sores or fever blisters, or may just cause a sore throat. [2] [6] Genital herpes involves the genitalia. It may have minimal symptoms or form blisters that break open and result in small ulcers. [1] These typically heal over two to four weeks. [1]
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