Brand: PARAMECTIN ® Injection
PARASITES CONTROLLED* (spectrum of activity)
* Country differences may apply: read the product label!
- Gastrointestinal roundworms: Adult worms and immature stages of Ostertagia ostertagi (incl. inhibited larvae), Ostertagia lyrata, Haemonchus placei, Trichostrongylus axei, Trichostrongylus colubriformis, Cooperia spp, Oesophagostomum radiatum, Bunostomum phlebotomum, Chabertia ovina, Nematodirus spathiger, Strongyloides papillosus.
- Lungworms: Dictyocaulus viviparus.
- Sucking lice: Linognathus vituli
- Aids in the control of cattle ticks (Boophilus microplus) and
- Residual effect:
- 1 ml product/50 kg, equivalent to: abamectin 200 mcg/kg bw.
Read the product label for further details on dosing
- LD50 (acute oral) in rats: a.i. 10 mg/kg
- LD50 (acute dermal) in rats: abamectin: a.i. 330 mg/kg
- Estimated hazard class according to the WHO: not applicable for veterinary medicines
Suspected poisoning? Read the article on abamectin safety in this site.
Withholding periods (=withdrawal times) in days for meat & milk (country-specific differences may apply: read the product label)
- Meat: Australia 30 days (ESI 42 days)
- Milk for human consumption: Australia 30 days.
WARNING !!!: Never use on humans, dogs or cats
You may be interested in the following articles in this site dealing with the general safety of veterinary products:
- Safety for humans
- Safety for domestic animals
- Safety for the environment
- Hazard classifications of pesticides
Risk of resistance of gastrointestinal roundworms to macrocyclic lactones (incl. abamectin): YES, reported in cattle in numerous countries particularly in the following worm species: Cooperia spp and Ostertagia spp.
Resistance of gastrointestinal roundworms to macrocyclic lactones (incl. abamectin) in sheep, goats and cattle has been reported almost worldwide, including the USA, UK, Australia and New Zealand. Based on the very abundant and frequent use of ivermectin and other macrocyclic lactones (with cross-resistance to ivermectin) in livestock it must be assumed that resistance of these roundworms to this chemical class will continue spreading and strengthening in the future.
- Benzimidazoles, e.g. albendazole, febantel, fenbendazole, oxfendazole, etc. Similar or even worse resistance problems than ivermectin
- Imidazothiazoles, mainly levamisole. etc. Similar or even worse resistance problems than ivermectin
- Nitroxinil (limited spectrum of activity)
- Tetrahydropyrimidines, e.g. morantel, pyrantel (limited spectrum of activity)
- Salicylanilides, e.g. closantel (limited spectrum of activity)
These alternative products may not be available in all countries, or may not be available as pour-ons.
This means that if this product does not achieve the expected efficacy against the mentioned parasites, it may be due to resistance and not to incorrect use, which is usually the most frequent cause of product failure.
Are the active ingredients of this product ORIGINAL* or GENERICS**?
*Meaning that they are still patent protected and generics are not yet available
**Meaning that they have lost patent protection and may be acquired from manufacturers of generic active ingredients other than the holder of the original patent.
COUNTRIES where this brand/product is marketed: Australia, New Zealand
GENERIC BRANDS available? Yes abundant in Australia and New Zealand, not in the USA or Europe.
Click here to learn more about GENERIC vs. ORIGINAL drugs.
For an overview on the most used antiparasitic injectable brands for livestock click here.
Abamectin, one of the first macrocyclic lactones developed, was introduced already in the 1980s (by MSD AGVET). As all macrocyclic lactones, abamectin is an endectocide, i.e. it is simultaneously effective against some external parasites and against internal parasites (mainly roundworms). As for other macrocyclic lactones, abamectin has no efficacy whatsoever against tapeworms and flukes. Abamectin is considered as the "cheap" ivermectin, with a similar spectrum of efficacy but less potent and slightly more toxic. It is abundantly used in ruminants, much less in pig, poultry and pets. Abamectin is also used in agricultural and hygiene pesticides worldwide. Interestingly abamectin is widely used on livestock in Australia and New Zealand but insignificantly in the EU, the USA and Canada.
Being an excellent antiparasitic, abamectin does not control all parasites of livestock. Unfortunately advertising and even the label of some generic formulations in less developed countries often include unsubstantiated claims. To help preventing confusion and misuse it is useful to know that whatever abamectin 1% injectable used at the recommended dose, it DOES NOT CONTROL:
- Ticks (e.g. Amblyomma spp, Rhipicephalus spp, Dermacentor spp, Haemaphysalis spp, Hyalomma spp, Ixodes spp, etc.)
- Flies (e.g. horn flies, houseflies, stable flies, black flies, horse flies, etc.)
- Fleas (e.g. Ctenocephalides spp)
- Blowfly strike of sheep
- Tapeworms (e.g. Moniezia spp spp)
- Flukes (e.g. liver fluke Fasciola hepatica)
Click here for general information on good practices for the prevention and control of gastrointestinal worms in livestock.
This article IS NOT A PRODUCT LABEL. It offers complementary information that may be useful to veterinary professionals and users that are not familiar with veterinary antiparasitics.
Information offered in this article has been extracted from publications issued by manufacturers, government agencies (e.g. EMEA, FDA, USDA, etc.) or in the scientific literature. No guarantee is given on its accuracy, integrity, sufficiency, actuality and opportunity, and any liability is denied. Read the site's DISCLAIMER.
In case of doubt contact the manufacturer or a veterinary professional.