Company: BEAPHAR

FORMULATION: «collar» impregnated with insecticides/tickicides 

ACTIVE INGREDIENT(S)*: DIMPYLATE= DIAZINON:  15% w/w g/kg (3.6 g/collar for dogs; 2.1 g/collar for cats)

CHEMICAL CLASS of the active ingredient(s): ORGANOPHOSPHATE


PARASITES CONTROLLED* (spectrum of activity)


  • Collars in different sizes for cats, puppies and dogs.
  • Since the active ingredients are released slowly from the collar's matrix, it is not possible to calculate the exact dose that the animals are exposed to in a particular moment.


  • LD50 (acute oral) in rats: n.a. for the collar: for the active ingredients: 1250 mg/kg for diazinon=dimpylate.
  • LD50 (acute dermal) in rats: n.a. for the collar: for the active ingredients: >2150 mg/kg for diazinon=dimpylate.
  • Estimated Toxicity Class according to the WHO: II moderately hazardous (calculated based on the LD50, learn more)

Suspected poisoning? Read the article on diazinon = dimpylate safety.

WARNING !!!: Never use on cats collars approved only for dogs.  Learn more about insecticide-impregnated collars and their safety.

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


Risk of resistance? YES, moderate in:

There are reports on resistance of fleas and brown dog ticks (Rhipicephalus sanguineus) to organophosphates. For this reason efficacy and protection provided by this product against these parasites may be lower or shorter than expected.

Alternatives to prevent resistance through product rotation:

*F = effective against fleas; T = effective against ticks.

These alternative products may not be available in all countries, or may not be available as collars.

Resistance of fleas and brown dog ticks to pyrethroids is not uncommon in many countries.

Learn more about resistance and how it develops.


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

  • Dimpylate: GENERIC (introduced in the 1950s)

*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 (maybe under other TM): UK, Ireland and other EU countries
GENERIC BRANDS available? YES. This product itself contains generic dimpylate.

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


BEAPHAR FLEA & TICK COLLAR is an insecticide-impregnated collar for dogs and cats from BEAPHAR with generic dimpylate.

Diazinon (also called dimpylate) is a veteran organophosphate introduced in the 1950s by GEIGY (later CIBA-GEIGY → NOVARTIS). It is a broad-spectrum insecticide and acaricide effective against fleas and ticks. It was abundantly used until the 1990s in livestock and pets, in agriculture and against household pests. Nowadays it has been vastly replaced by modern, less toxic compounds.

According to the label this product provides up to 6 weeks months control of fleas and ticks but efficacy may be lower and protection shorter than expected in case of resistance.

Topical products (mainly spot-ons and insecticide-impregnated collars) have some advantages over systemic products (mainly tablets for oral administration and injectables):

  • Most topical products kill or sterilize the parasites before they bite and suck blood on the pet, whereas systemic products kill or sterilize the parasites only after their blood meal.
  • Topical products cannot be vomited.
  • Spot-ons and collars are very convenient to administer.
  • There is a larger choice of topical products.

But topical products have also some disadvantages:

  • Topical products contaminate the pet's hair coat and it is advisable for children and also adults to avoid contact with the pet for several days after treatment.
  • Topical products may not control parasites in some parts of the pet's body (e.g. the ears, below the tail, between the legs, etc.), whereas systemic products reach the blood-sucking parasites through the blood wherever they are.
  • Efficacy of topical products may be reduced or shortened through exposure to dirt, sun, shampooing, washing, rain, baths, etc., whereas efficacy of systemic products is independent from these factors.

For an overview and a list of the most popular pet antiparasitics for flea, tick, lice and/or mite control 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.