The Problem with Fleas

If untreated, the female flea will continue to take blood for several weeks. During that time, she will consume about 15 times her body weight in blood. Although the male fleas do not take as much blood, they too contribute to significant blood loss from the host animal.

This can lead to the dog having an insufficient number of red blood cells, which is known as anaemia. In young or debilitated dogs, the anaemia may be severe enough to cause problems.

A large flea population in the home will also mean that other residents, such as the dog’s owner, become attractive to fleas. Contrary to popular belief, most dogs do not itch too much due to fleas. However, many dogs become allergic to the saliva in the flea’s mouth. When these dogs are bitten, intense itching occurs, causing the dog to scratch and chew continuously.


Treating a Dog Against Fleas

Supermarket and pet shops sell many flea products such as powders shampoos and flea collars, but their effect is limited. They are often only effective for a few hours after application, or are only effective against adult fleas, so fleas will return to you dog or cat a short time after their use and the environment is not affected.

It’s similar to picking up a medicine off the shelf in the supermarket or getting something on prescription.

We recommend a number of prescription-level products.


Prinovox (Spot on)

Prinovox is a broad spectrum flea and worm treatment which can provide protection against

  • fleas and biting lice infestations
  • treatment of ear mites
  • sarcoptic mange
  • demodicosis, in addition to
  • roundworm
  • hookworm
  • whipworm
  • heart worm
  • lung worm

Prinovox comes as a spot-on which once applied is rapidly distributed over the animals skin and absorbed transdermally. Prinovox can be detected on your pets skin for 28 days.

It is important to not allow your pet to get wet for at least 2 days after application It is not absorbed into the pet’s body but remains attached to proteins in the pet’s skin and skin glands.

It needs to be applied monthly to your dog by parting the hair on the dogs neck and applying it to the skin. One of our nurses would be happy to demonstrate how to do this for you.


NEXGARD (flavoured chew)

NEXGARD is used for the treatment of fleas in dogs it should last for 4-5 weeks. It will also kills ticks for up to 1 month. NEXGARD kills fleas before egg production so should prevent household contamination of fleas.

  • kills fleas before egg production
  • kills ticks


NEXGARD Spectra (flavoured chew)

NEXGARD Spectra provides the same protection as NEXGARD but it also can prevent against heartworm , and treat gastrointestinal worms. It treats:

  • fleas and biting lice infestations
  • ticks
  • roundworm
  • hookworm
  • whipworm
  • lung worm

Because NEXGARD is a chewable tablet, there are no restrictions on your dog swimming of bathing after treatment


There are a number of other veterinary products available for those instances where Frontline or Advocate is not suitable or there are specific needs in addition to straightforward flea control. Talk to a vet nurse for free advice on flea control.

You can call your local Mercer and Hughes Veterinary Surgery to discuss and order your prescription-level flea treatment.

Alternatively you can order your repeat flea and worming treatment online.


Treating Your Dog for Fleas