Ivermectin is one of the few medicines that vets regularly prescribe for dogs with demodectic mange. The drug is easy to administer, and results are usually seen within a short period of time. It's been proven many times over that Ivermectin is successful in curing the skin problem, but that doesn't mean it can be considered as the de-facto solution for it.
The problem with Ivermectin is that it isn't the wonder drug most people think it is. Yes, it does seem to get rid of the mange, but its only a temporary solution at best. And that's not to mention the various negative side-effects that can result from its use, some of which can even prove fatal.
How do you know if Ivermectin is the right type of treatment for your dog? Here are a few questions you should ask to help you decide.
What is Ivermectin?
Simply put, Ivermectin is an active
ingredient in several medicines, specially designed for getting rid of
parasites on a body. In the pet world, these are available in several products
meant for different animals, like horses and dogs.
For dogs, two of the most popular
products are 'Ivomec' or 'Heartgard', both of which are marketed as parasite
control drugs. They affect skin parasites and several others that inhabit the
bloodstream of the dog, such as heartworms. Incidentally, it is also used to
prevent heartworm infestations in dogs as well, although that's not its primary
purpose.
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| Photo credit: tylerthewonderdog.com |
How is it administered?
Ivermectin is usually produced in
liquid or tablet form, which are administered to dogs orally - that is, the
dogs are fed the drug.
The dosage measurements vary for each
dog, determined by their weight. Usually the vet will provide the appropriate
dosage, but generally speaking, a dose of 0.3mg/kg once every two weeks is
sufficient for the treatment of demodectic mange. The liquid version of
Ivermectin is sometimes packaged in filled syringes with set amounts, which
makes it easier to gauge the dosage levels.
How does Ivermectin work?
Once it is administered to the affected
dog, Ivermectin enters the bloodstream, using it as a means to affect the
demodex mites in contact with the dog's skin.
From that point onwards, the drug does
two things: Firstly, it disables the nervous systems of the mites, effectively
paralysing them. Then, it manipulates the dog's white blood cells into
attacking the mites and killing them. In this way, the mites will no longer
cause further skin damage to the dog's body. So long as the drug remains in the
body, the demodectic mange will be kept away indefinitely.
A minor note about Ivermectin: it
doesn't affect unhatched demodex mites still in their eggs. Therefore, more
than one dose of Ivermectin is required to completely eradicate the mites from
the body.
Advantages of using Ivermectin
Ivermectin has actually been proven to
be capable of destroying the mites efficiently, which is why vets are still
recommending it as their first choice in treating demodectic mange.
The drug is also very easy to
administer, since they're designed to be ingested orally and not given in the
form of injections. This removes any effort required to calm the dog, since an
injection can be a stressful experience.
Lastly, Ivermectin is relatively safe
when used responsibly. This requires the vet and the owner to fully understand
the dog's condition and to adapt the treatment accordingly. If extensive care
and caution is exercised, Ivermectin should not cause any trouble in the
short-term.
Disadvantages of using Ivermectin
So far, Ivermectin seems like the perfect
method of demodectic mange treatment; it's safe, easy to use and most of all,
it's effective. In spite of all this, however, there are still a few
disadvantages of using Ivermectin that should be highlighted:
1.) It only solves half the problem.
As we've said before, the purpose of Ivermectin is to kill off the mites that
are causing demodectic mange to happen. However, that only settles part of the
equation. The true key to stopping demodectic mange is to repair and rebuild
your dog's immune system, because it's the only thing that can stop the demodex
mites from appearing again. Even if all the mites are killed in one go (which
is impossible, due to Ivermectin being unable to affect unhatched mites), the
weak immune system will always be unable to prevent the mites from causing
demodectic mange in future.
2.) Reliance on Ivermectin. This
is somewhat related to the first point. Some owners may discover by themselves
that the drug is indeed a short-term solution; once the treatment stops for the
affected dog, the mange might come back. Because the immune system wasn't
strong enough to handle the mites on its own before the Ivermectin was
withdrawn, it still remains vulnerable to another attack and may cause a
relapse.
At this point, the owner can pursue two
options: keep the Ivermectin flowing to shut the mites out permanently using
chemical drugs, or start building up the immune system to help the dog to
recover on its own. Unfortunately, some owners choose the first option and
suddenly find themselves spending a lot more in pet medical bills, just to keep
the problem from spreading.
Besides the increased expenses,
depending on Ivermectin as a long-term solution can also cause the immune
system to 'slack off', letting the drug do all the work. When the Ivermectin
doses eventually cease (which it eventually will), the dog will be essentially
defenceless against the mites because its immunity is non-existent. The
demodectic mange will most definitely reappear with a vengeance then.
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| Photo Credit: singletrackworld.com |
3.) Possible allergies to
Ivermectin. This drug may be the default treatment recommended by vets to
treat demodectic mange, but Ivermectin should never be given to some dogs due
to possible allergic reactions.
Border collies and other herding breeds
in particular are highly allergic to Ivermectin; a relatively low dose for
another dog may be too much for a collie, and will cause severe side-effects
such as lethargy, dehydration and even death.
Most people know about this innate
allergy and will keep their dog away from the drug, but it actually isn't as
widely known as it should be. Some professional vets may not even know that a
border collie shouldn't receive a Ivermectin dose!
4.) Long term use may cause liver
damage. This is another reason why Ivermectin should not be given over a
long period of time. While relatively harmless when used as a temporary
solution, the drug may cause damage to the liver in the long run. It's
important to remember that Ivermectin is primarily a pesticide for use against
parasites, which means that it's essentially a type of poison. Giving your dog
Ivermectin for a year straight may hurt your dog as well.
Conclusion
Ivermectin is used to cure demodectic
mange by killing the mites, and it does its job very well. The problem only
starts when dog owners and even vets start treating it as a wonder drug due to
a lack of understanding, and depend on it exclusively.
The one thing that you should know is
that Ivermectin only solves the problem of a mite overpopulation on your dog's
body as long as it's being administered; the mites will return as soon as it
stops and will start the cycle all over again. The mange will only clear up if
the mites are denied the chance to spread, and the only thing that can do that
is the immune system of the dog. Unfortunately, the Ivermectin does nothing to
help in that regard.
The only other way to control the mites
is through continuous use of Ivermectin, but as we have discovered earlier on
in this article, it's definitely not a feasible treatment plan for your dog.
You might be thinking of using
Ivermectin as a plan to treat your dog's demodectic mange, but I'm sure you
already know by now that I don't think it's the best thing to do. But there's
no need to feel helpless - there are more solutions to demodectic mange than
you know.
Simon has a miniature schnauzer and
owns a website devoted to gathering information about dog skin problems. Do you
need more information about demodectic mange? Just visit http://dogskintreatments.com to find out more about its causes, the demodex mite, as
well as the various methods of treatment available.
