Brand: ENTERA Allwormer Tablets for DOGS

Company: TROY

FORMULATION: «tablets» for oral administration; may be chewable, flavored, coated, etc.


  • PYRANTEL (as embonate salt):
    • smalll dogs: 14.9 mg/tablet
    • medium dogs: 49.8 mg/tablet
    • smalll dogs: 75 mg/tablet
    • medium dogs: 250 mg/tablet
    • smalll dogs: 15 mg/tablet
    • medium dogs: 50 mg/tablet

CHEMICAL CLASS of the active ingredient(s):


PARASITES CONTROLLED* (spectrum of activity):


  • Small dogs: 1 tablet for small dogs every 3 kg bw (equivalent to 4.98 mg/kg pyrantel embonate, 25 mg/kg febantel, 5.0 mg/kg praziquantel)
  • Medium dogs: 1 tablet for medium dogs every 10 kg bw (equivalent to 4.98 mg/kg pyrantel embonate, 25 mg/kg febantel, 5.0 mg/kg praziquantel)

* Can be slightly different in some countries: read the product label!


  • LD50 (acute oral) in rats: n.a. for the tablets. >5000 mg/kg for pyrantel1760 mg/kg for febantel; 2840 mg/kg for praziquantel
  • Estimated Hazard Class according to the WHO: not applicable for veterinary medicines

Suspected poisoning? Read the article on pyrantel safetyfebantel safety and/or praziquantel safety in this site.

You may be interested in the following articles in this site dealing with the general safety of veterinary products:


Risk of resistance development? YES, but rather low in Ancylostoma caninum.

There are reports on resistance of Ancylostoma spp to pyrantel in dogs and horses, but so far it does not seem to be widespread.

Alternatives to prevent resistance through product rotation:

There are no reports on resistance of tapeworms to praziquantel.

Learn more about resistance and how it develops.


Are the active ingredients of this product ORIGINAL* or GENERICS**?

  • Pyrantel: GENERIC (introduced in the 1960s)
  • Febantel: GENERIC (introduced in the 1970s)
  • Praziquantel: GENERIC (introduced in the 1970s)

*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 product is marketed: AUSTRALIA
GENERIC BRANDS available? YES, in some countries.

Click here to learn more about GENERIC vs. ORIGINAL drugs.


ENTERA Allwormer Tablets for DOGS from TROY is a generic wormer effective against roundworms and tapeworms. It is a generic version of DRONTAL from BAYER.

Pyrantel is a narrow-spectrum anthelmintic belonging to the chemical class of the tetrahydropyrimidines that was introduced in the 1960s (by PFIZER → ZOETIS). It  is effective against roundworms and a few tapeworms (depending on the dose) in the gut, but not against those in other organs (e.g. the lungs, the skin, etc). It controls the most important dog worms such as the roundworms Toxocara canis and Toxascaris leonina, the hookworms Ancylostoma caninum and Uncinaria stenocephala. It is used a lot in pets and horses but rarely in livestock. It is not used in agriculture.

Febantel is a broad-spectrum anthelmintic belonging to the chemical class of the benzimidazoles that was introduced in the 1970s (by BAYER). In fact it is a pro-benzimidazole (a so-called pro-drug) that becomes a benzimidazole only once ingested by the host. It is transformed into fenbendazole in the stomach and the intestine of the host, shortly after ingestion. Febantel is effective against numerous roundworms (e.g. Toxocara canis, Toxascaris leonina), hookworms (e.g. Ancylostoma caninum, A. braziliense, Uncinaria stenocephala), and whipworms (Trichuris vulpis). Febantel is moderately used in livestock, but not in agriculture.

Praziquantel is a veteran isoquinoline anthelmintic introduced in the 1970s (by BAYER). It is still the most effective and most vastly used parasiticide against tapeworms, but without any efficacy against roundworms, fleas or ticks. Praziquantel adds efficacy against tapeworms (Dipylidium caninumTaenia pisiformis, etc.) but has no efficacy whatsoever against roundworms, hookworms or whipworms. It is the anthelmintic most vastly used against tapeworms in pets. There are hundreds of antiparasitic brands for pets containing praziquantel. It is not used in agriculture.

Pyrantel, febantel and praziquantel have no residual effect, i.e. they act against the worms during a few hours after administration but are quickly metabolized and excreted. For this reason treatment must often be repeated for certain indications.

For an overview and a list of the most popular pet wormers click here.


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.