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PYRETHROIDS

Examples of Commercial Products and Generic Names

Alpha-Cypermethrin (Bestox, Fastac, Alphafos, Skolix)
Bifenthrin Talstar
Beta Cyfluthrin Bulldock
Beta Cyfulthrin + Methomidophos Magnum
Cypermethrin (Arrivo, Cheeta, Cymbush, Cyperkill, Lucky Cypermethrin,
Nurelle, Ripcord, Sherpa, Sunnmerin, Ustad)
Cyfluthrin (Baythriod)
Cyfluthrin + Methamidophos (Baythriod TM)
Cypermethrin + Dimethoate (Almos-D, Laser)
Cypermethrin + Chlorpyriphos (Nurelle-D)
Deltamethrin (Decis)
Deltamethrin + Dimethoate (Decis-D)
Flucythrinate (Pay-off)
Fenpropathrin (Danitol, Dathrin, Totti, Fenthrion)
Lambda-Cyhalothrin (Karate, Labdathrin)
Permethrin (Ambsh, Coopex, Permasect, Pounce, Talcord)
Fenvalerate (Fenkill, Sumicidin)
ES-Fenvalerate (Sumincidin Super)
Zeta-Cypermethrin (Fury)

Pharmacological Action or Site of Toxicity

Allergnic
Neurotoxic

Routes of Absorption

Ingestion
Dermal
Inhalation

WHO Hazard Classification

Class III

Symptoms

Allergic reaction following pyrethroids exposure manifest themselves like asthmatic symptoms (bronchospasm swelling of mucous membranes etc.) upto anaphylaxis. Excessive salivation, choreoathetosis., convulsions, tremors.

Treatment

  1. Severe allergic reactions have to be treated with adrenalin
  2. Less severe allergic reaction can be treated with antihistamines.
  3. For ingestion lavage using activated charcoal slurry (100 gm in 150 ml water).
  4. For skin contact wash exposed area.
  5. Symptomatic treatment.
  6. Atropine sulphate to suppress salivation & reduce severity of some of the signs of poisoning.
  7. Diazepam for convulsions.

Lab Tests

No simple test. Only complex laboratory procedure.

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Pakistan Agricultural Pesticides Association

909-910, Park Avenue, P.E.C.H.S.,
Shahrah-e-Faisal,
Karachi-75400

Tel:454 1562 Fax:454 6131