Penciclovir

Penciclovir (INN) is a guanine analogue antiviral drug used for the treatment of various herpesvirus infections. It is a nucleoside analogue which exhibits low toxicity and good selectivity. Because penciclovir is absorbed poorly when given orally (by mouth) it is used more as a topical treatment, and is the active ingredient in the cold sore medications Denavir (NDC 0135-0315-52), Vectavir and Fenistil. Famciclovir is a prodrug of penciclovir with improved oral bioavailability.

In herpes labialis, the shortening of duration of healing, pain and detectable virus is maximally one day.[1], compared with the total duration of 2-3 weeks of disease presentation.

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This is the Average effectiveness per ailment as reported by our participants (you).

Effectiveness:
  • 0 = No improvement or Worse
  • 1 = Slight improvement
  • 2 = Moderate Improvement
  • 3 = Significant Improvement
  • 4 = Cured

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