| | Penciclovir (Site not responding. Last check: 2007-11-04) |
 | | Penciclovir interferes with the activity of enzymes needed for the replication of viral DNA in cells, thus preventing the virus from multiplying. |
 | | In animal studies, penciclovir given orally was shown to pass into breast milk, and in fact to be present in higher concentrations than those found in the blood. |
 | | While there is no information on whether penciclovir passes into human breast milk after topical application, you should consult your doctor to help you decide whether to discontinue breast feeding (if the drug is determined to be necessary to the mother) or to discontinue the drug. |
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