Permethi 5% w/w
Permethrin
Category: Cream
Manufacturer: Pharmasia Limited
Price: 25.0 ৳
15 gm tube
Related Medicines
Permethrin cream is indicated for the treatment of scabies and crab lice infestations (Pediculosis). Scabies can affect everyone in the family. If one is infected, all family members must be treated together.
Parasiticidal preparations
Permethrin induces electrochemical abnormalities across the membranes of excitable cells, leading to sensory hyperexcitability, in coordination and prostration. Permethrin is rapidly metabolized in mammals by ester hydrolysis to inactive metabolites which are excreted primarily in the urine. The principal metabolites of Permethrin are detectable in the urine within hours of a whole body application of the cream to healthy volunteers or scabies patients. The highest levels of excretion are detectable within the first 48 hours, but very low levels of metabolites are still detectable in the urine of some individuals 28 days after treatment.
The treatment of eczemodous like reactions with corticosteroids should be withheld prior to treatment with permethrin, as there is a risk of exacerbating the scabies infestation by reducing the immune response to the mite.
Permethrin is contraindicated in patients with known hypersensitivity to any component of pyrethroids or permethrin. Nursing staff who routinely apply permethrin may wear globes to avoid any possible irritation to the hands.
In Scabies patients, skin discomfort, usually described as burning, stinging or tingling occurs in a few individuals soon after the cream is applied. Others transient signs and symptoms of irritation including enythema, edema, eczema, rash and puritis.
There are limited data on the use of Permethrin in pregnancy which provide no indication of any risk to the foetus. Furthermore, the amount of Permethrin absorbed systemically following a whole body application is extremely low. The negative mutagenicity tests and the very low mammalian toxicity would suggest that any risk to the foetus following treatment with Permethrin is minimal. Inspite of these, Permethrin is suggested not to useduring pregnancy.It is not known whether Permethrin is excreted in human breast milk. So, it should not be used in nursing mothers.
Scabies infestation is often accompanied by pruritus, edema & erythema. Treatment with permethrin may temporarily exacerbate these conditions. Patients should be advised to avoid contact with eyes during application & to flash with water immediately if the cream gets in the eyes.
There are no reports of overdosage with Permethrin. It is possible that excessive application of Permethrin might result in localized adverse reactions or more severe skin reactions.
Store in a cool, dry place, away from light & keep out of the reach of children...
Parasiticidal preparations
Permethrin cream contains Permethrin, a pyrethroid, which is a topical scabicidal agent for the treatment of infestation with Sarcoptes Scabiei (scabies). It acts on the nerve cell membrane to disrupt the sodium channel current by which the polarization of the membrane is regulated. Delayed repolarization & paralysis of the pests are the consequences of this disturbance.Pharmacokinetics: The only approved route of administration is the topical route and there are few human data available on systemic exposure or kinetics following permethrin application to the skin. Some presystemic metabolism occurs in skin. Less than 0.5% of applied permethrin is absorbed during the first 48 hours. Absorbed permethrin is rapidly metabolized by ester hydrolysis, most likely in the liver and the products are excreted primarily in the urine.
In the absence of specific studies in pregnant women, its use in pregnancy should only follow medical advice. It is not known whether permethrin is excreted in human milk so it should not be used in nursing mothers.
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