MetroGel 75

MetroGel 75

WARNINGS

No information provided.

PRECAUTIONS

General: METROGEL® Topical Gel has been reported to cause tearing of the eyes. Therefore, contact with the eyes should be avoided. If a reaction suggesting local irritation occurs, patients should be directed to use the medication less frequently or discontinue use. Metronidazole is a nitroimidazole and should be used with care in patients with evidence of, or history of blood dyscrasia.

Carcinogenesis, mutagenesis, impairment of fertility

Metronidazole has shown evidence of carcinogenic activity in a number of studies involving chronic, oral administration in mice and rats but not in studies involving hamsters.

Metronidazole has shown evidence of mutagenic activity in several in vitro bacterial assay systems. In addition, a dose-response increase in the frequency of micronuclei was observed in mice after intraperitoneal injections and an increase in chromosome aberrations have been reported in patients with Crohn's disease who were treated with 200-1200 mg/day of metronidazole for 1 to 24 months. However, no excess chromosomal aberrations in circulating human lymphocytes have been observed in patients treated for 8 months.

Pregnancy

Teratogenic effects: Pregnancy category B:

There has been no experience to date with the use of METROGEL® (metronidazole topical gel) Topical Gel in pregnant patients. Metronidazole crosses the placental barrier and enters the fetal circulation rapidly. No fetotoxicity was observed after oral metronida-zole in rats or mice. However, because animal reproduction studies are not always predictive of human response and since oral metron-idazole has been shown to be a carcinogen in some rodents, this drug should be used during pregnancy only if clearly needed.

Nursing mothers

After oral administration, metronidazole is secreted in breast milk in concentrations similar to those found in the plasma. Even though METROGEL® Topical Gel blood levels are significantly lower than those achieved after oral metronidazole, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Pediatric use

Safety and effectiveness in pediatric patients have not been established.

Last reviewed on RxList: 9/4/2008
This monograph has been modified to include the generic and brand name in many instances.

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MetroGel 75 - User Reviews

MetroGel 75 User Reviews

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