Permethrin cream, 5%*
PERMETHRIN - permethrin cream
Permethrin Cream, 5% is a topical scabicidal agent for the treatment of infestation with Sarcoptesscabiei
(scabies). It is available in an
off-white, vanishing cream base. Permethrin Cream, 5% is for topical use only.
– The permethrin used is an approximate 1:3 mixture of the cis and trans isomers of the pyrethroid 3-(2,2-
dichloroethenyl)-2, 2-dimethylcyclopropanecarboxylic acid, (3-phenoxyphenyl) methyl ester. Permethrin has a molecular formula of
C21H20CI2O3 and a molecular weight of 391.29. It is a yellow to light orange-brown, low melting solid or viscous liquid.
– Each gram contains permethrin 50 mg (5%).
– Butylated hydroxytoluene, carbomer homopolymer type B, fractionated coconut oil, glycerin, glyceryl
monostearate, isopropyl myristate, lanolin alcohols, mineral oil, polyoxyethylene cetyl ethers, purified water, and sodium hydroxide.
Formaldehyde 1 mg (0.1%) is added as a preservative.
Permethrin, a pyrethroid, is active against a broad range of pests including lice, ticks, fleas, mites, and other arthropods. It acts on
the nerve cell membrane to disrupt the sodium channel current by which the polarization of the membrane is regulated. Delayed
repolarization and paralysis of the pests are the consequences of this disturbance.
Permethrin is rapidly metabolized by ester hydrolysis to inactive metabolites which are excreted primarily in the urine. Although the
amount of permethrin absorbed after a single application of the 5% cream has not been determined precisely, data from studies with
14C-labeled permethrin and absorption studies of the cream applied to patients with moderate to severe scabies indicate it is 2% or
INDICATIONS AND USAGE
Permethrin Cream, 5% is indicated for the treatment of infestation with Sarcoptesscabiei
Permethrin Cream, 5% is contraindicated in patients with known hypersensitivity to any of its components, to any synthetic pyrethroid
If hypersensitivity to Permethrin Cream, 5% occurs, discontinue use.
Scabies infestation is often accompanied by pruritus, edema, and erythema. Treatment with Permethrin Cream, 5% may temporarily
Information for Patients -
Patients with scabies should be advised that itching, mild burning and/or stinging may occur after application of Permethrin Cream,
5%. In clinical trials, approximately 75% of patients treated with permethrin cream, 5% who continued to manifest pruritus at 2
weeks had cessation by 4 weeks. If irritation persists, they should consult their physician. Permethrin Cream, 5% may be very mildly
irritating to the eyes. Patients should be advised to avoid contact with eyes during application and to flush with water immediately if
Permethrin Cream, 5% gets in the eyes.
Carcinogenesis, Mutagenesis, Impairment of Fertility -
Six carcinogenicity bioassays were evaluated with permethrin, three each in rats and mice. No tumorigenicity was seen in the
rat studies. However, species-specific increases in pulmonary adenomas, a common benign tumor of mice of high spontaneous
background incidence, were seen in the three mouse studies. In one of these studies there was an increased incidence of pulmonary
alveolar-cell carcinomas and benign liver adenomas only in female mice when permethrin was given in their food at a concentration of
5000 ppm. Mutagenicity assays, which give useful correlative data for interpreting results from carcinogenicity bioassays in rodents,
were negative. Permethrin showed no evidence of mutagenic potential in a battery of in vitro
and in vivo
genetic toxicity studies.
Permethrin did not have any adverse effect on reproductive function at a dose of 180 mg/kg/day orally in a three-generation rat study.
Reproduction studies have been performed in mice, rats, and rabbits (200 to 400 mg/kg/day orally) and have revealed no evidence
of impaired fertility or harm to the fetus due to permethrin. There are, however, no adequate and well-controlled studies in pregnant
women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy
It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk and because of the
evidence for tumorigenic potential of permethrin in animal studies, consideration should be given to discontinuing nursing temporarily
or withholding the drug while the mother is nursing.
Permethrin Cream, 5% is safe and effective in pediatric patients two months of age and older. Safety and effectiveness in infants less
than two months of age have not been established.
Geriatric Use -
Clinical studies of permethrin cream, 5% did not identify sufficient numbers of subjects aged 65 and over to allow a definitive
statement regarding whether elderly subjects respond differently from younger subjects. Other reported clinical experience has not
identified differences in responses between the elderly and younger patients. This drug is known to be substantially excreted by the
kidney. However, since topical permethrin is metabolized in the liver and excreted in the urine as inactive metabolites, there does not
appear to be an increased risk of toxic reactions in patients with impaired renal function when used as labeled.
In clinical trials, generally mild and transient burning and stinging followed application with permethrin cream, 5% in 10% of
patients and was associated with the severity of infestation. Pruritus was reported in 7% of patients at various times post-application.
Erythema, numbness, tingling, and rash were reported in 1 to 2% or less of patients (see PRECAUTIONS-General
). Other adverse
events reported since marketing permethrin cream, 5% include: headache, fever, dizziness, abdominal pain, diarrhea and nausea and/
or vomiting. Although extremely uncommon and not expected when used as directed (see DOSAGE AND ADMINISTRATION
rare occurrences of seizure have been reported.
None have been medically confirmed as associated with Permethrin Cream, 5% treatment.
No instance of accidental ingestion of Permethrin Cream, 5% has been reported. If ingested, gastric lavage and general supportive
measures should be employed. Excessive topical use (see DOSAGE AND ADMINISTRATION
) may result in increased irritation
DOSAGE AND ADMINISTRATION
Adults and children
-Thoroughly massage Permethrin Cream, 5% into the skin from the head to the soles of the feet. Scabies rarely
infests the scalp of adults, although the hairline, neck, temple, and forehead may be infested in infants and geriatric patients. Usually
30 grams is sufficient for an average adult. The cream should be removed by washing (shower or bath) after 8 to 14 hours. Infants
should be treated on the scalp, temple, and forehead. ONE APPLICATION IS GENERALLY CURATIVE.
Patients may experience persistent pruritus after treatment. This is rarely a sign of treatment failure and is not an indication for
retreatment. Demonstrable living mites after 14 days indicate that retreatment is necessary.
Permethrin Cream, 5% (w/w) is available as follows:
60 g tube (NDC 40085-215
Store at 20-25°C (68-77°F) [see USP Controlled Room Temperature].
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RESULTS OF DANCE SECTIONS – WYNNUM MANLY EISTEDDFOD 2011 WEDNESDAY 26-4-2011 JEMMA POAK, ALICIA STIBBARD, ELLEN GWILLIM VHC ALICIA STIBBARD, VHC KAYLEE SCHIPPLOCK HC AMELIA BOFINGER, KAYLA BECHLY, IRELAND KNOWLES, NIA SAVAS, JACK JONES,ELLIE CASEY HC MIDORI KAYE, BROOKE STANEK, ELLIE CASEY D204 SONG AND TAP GROUP 6 YRS & UNDER D176 MODERN JAZZ U/T GROUP 6YRS & UNDER D198 SONG