A few years ago
a friend told me about Suprelorin.
She heard about it from a Siamese cat breeder, who was already
using it with success.
My friend wanted to try it on her male (our Ron Weasley) and
i was very sceptical in the first place, because it´s
some kind of chemical castration and usually that has some very
mean side effects. But when I surfed the net for more information,
I was positively surprised because this really has no side effects
what so ever!!! With all other chemical castrations the male
body is overdosed with progesterone - but this Suprelorin-chip
simply gives a sign to the hypophyse that there is enough testosterone
in the body, so it stops the production! You can compare it
with a pain killer, it works the same way. Also it works on
female cats!!! No more uterus infection from using the cat pill
or being in the heat too often!!!
This chip is implanted
just like the micro-chip. Slowly it dissolves, releasing the
working substance (Deslorelin) in intervals. Deslorelin is a
GnRH blocker. GnRH is the body own hormone, which regulates
the fertility hormones. On male cats it works for 14 months
and on female cats 14 till 18 months (also depending on the
season). Three days after implanting the chip, the females get
in the heat for once. In some cases this heat must be interrupted
by giving the cat-pill, but that only happens in few cases.
After this heat, the female has a REAL rest for 14 till 18 months
and behaves like a real neuter! They eat more, get better coat,
play, cuddle, are more tolerant and calmer - just like a real
happy neuter! The same goes for the male cats and they even
stop spraying!!! The males get a slight hormone up, before it
starts working to neuter them. Its very different with the males,
but mostly after 3 till 6 weeks they start behaving like a happy
My own experiences
with the chip:
Our Ron Weasley
in Germany was the first male cat to try. He was not spraying,
but chasing the females all the time. Therefore he lost weight
and had no time for his humans anymore. It worked perfectly
on him for 14 moths, though he tried to mate again when the
chip was 10 months old, it did not give any offsprings. But
after 14 months he got fertile again. Because of the chip he
got his very nice coat and the calm, cuddly temper back! So
the peace in the cat group was back and he felt sooo happy!
Next cat to try
was our Vicky. She is just as fertile as a siamesian cat, very
often and strongly in the heat. She even marked her territory
like a male. After 6 months she got in the heat again and i
thought the chip had finished workig, but she didn´t get
pregnant. She got in a permanent heat! So i gave her the cat
pill once, to interrupt and she stopped being in the heat at
once. Afterwards I read about this and giving progesterones,
when they get in permanent heat due to the chip. So without
knowing, we did the right thing. She stopped marking her territory
ad felt a lot better! Finally she got some coat and in the end
the chip worked 18 months for her. After that she got a very
nice litter of 5 kittens!!!
Same time as Vicky
we implanted the chip to Arthur Weasley. He had started to spray
and that is not so nice in the house
So he got the chip.
He stopped spraying very quickly and had more time to cuddle!
Also it was a good way of preventing my two males to get jealous
and start fighting each other. And another advantage - that
way we could not get accidents like matings between mother and
son. So we had only one fertile male at that time! 14 months
later, Arthur Weasley mated with our Bumsan and produced a nice
litter of 6 kittens. He even did some outside matings, all with
nice results! After 5 months of being fertile, he started to
spray again. Though i must say that he had lots of very fertile
females around him ;o) So maybe if he had not seen so many females,
he might have stayed "clean" a bit longer ;o) So he
got his second chip and can have a rest for 14 months again.
Meanwhile our Memphis is going to get fertile again
Memphis had not
only started to spray, but he also got very thin and his only
interest was GIRLS ;o) He had no time to eat, cuddle, play,
sleep and so on
Poor Memphis was not himself anymore!
So he also got the chip. He stopped spraying, gained weight
and he had time for the REAL important things in life again!
He got so happy and i got my old Memphis back ;o) I have no
female for him at the moment, but he starts to get interest
again. So i think he´s fertile. Which means - 14 months
Prima had a litter
of 8 kittens and that had taken a lot from her. So we decided
for her to have a long term rest and implanted the chip. 16
months later she got in the heat again.
Our Domino also
had the chip. She got a wonderful coat and was very happy during
that period! Before the chip she never wanted to be brushed,
but with the chip, she just let it happen! Simply because she
became a happy neuter due to the chip ;o)))) On her it worked
15 months. And than she got a litter of 3 very nice kittens.
4 times with a uterus infection due to using the cat pill! I
got her when she was 8 months old and at that time she was using
the cat pill already for 3 months! Therefore she got a uterus
infection, which was a bit hidden - no symptoms except for the
males chasing her all the time, though she was not in the heat!
Which is a sign for a hidden uterus infection. But i didn´t
realise, so i gave her the cat pill, because i thought she might
get in the heat
Unfortunately, we could not get the chip
at that time, because it was not yet allowed in Europe and we
had some troubles to get our chips
But that would have
been her own salvation
So we had to mate her twice in
a very short time. But now she finally has the chip and she
looks like a neutered male cat with an outstanding coat and
body in the middle of August
Finally her uterus has some
rest and she is just sooo happy and in TOP condition!
At last the chip
is legal here in Europe: "Suprelorin - trademark: Virbac".
The vets are still very sceptical, also because it says only
for dogs, but it is even used with success in ferrets. Ferrets
are very sensitive animals
If you neuter a ferret the
usual way, it might get kidney cancer. Also some ferrets get
bold. This chip is used on ferrets to prevent the kidney cancer
and the boldness. On Dachshounds it is used to prevent prostate
cancer! Many Dachshounds get this after being neutered, but
when neutered by this chip, it lowers the chance to get this
cancer highly! Because this chip simply stops the production
of the fertility hormones, it has no side effects even in long
term use! On the contrary - the animals live longer because
they get the resting periods.
Also it can be
used on cats who need to be neutered, but are not in condition
for surgery. For exsample a cat with a heart disease. You can
spare its life for a long time this way!!!
And there is another
These days you have many inherited diseases in cats like HCM
Those diseases often show very late, when the cat already had
produced itself very often! But its not healthy for the cats
to wait so long before reproducing. Females get uterus infections
because of using the pill on long term or getting in the heat
too often. Males would get crazy, not being able to follow their
instincts. Using this chip, we could "freeze" the
cats without doing any harm! Until we know that they are genetically
Every one who
knows me, knows that my males don´t live in outside cat
runs, but are fully members of the family. They even sleep in
my bed. Therefore i can not have them spraying! Before we had
the possibility of the chip, we had to neuter these males and
lose them for our breeding. Than i often looked with jealous
eyes to the breeders, who can keep their males in cat runs.
But i could never do that, because I want them around me. Now
we have the chip, i even can have more than one fertile male
in the house, without spraying! And think of our Bumsan with
her uterus infections - normally i would have had to neuter
her in order to save her live - now i still have a healthy,
happy breeding queen, thanks to the chip!
But the most important thing is: They are sooo very happy due
to this chip!!!!
Update Febuary 2009:
started to "sing" and sometimes spray again in January.
So i had kept him fertile for 7 months without any problems.
In that period he mated with Tossa and the result was 3 kittens.
Usually Tossa only gets 2 kittens - this was the second time
that she had 3!
In January 2009 we gave Memphis his second chip.
also Amicus has this chip. Implanted June 2008. He behaves like
a happy neuter.
So at the moment following cats have the suprelorin chip:
Arthur Weasley, Bumsan, Memphis & Amicus.
Update May 2009:
Nikita had developed
the Dolly Parton Syndrome in a very aggressive form!
She had gotten in the heat very young and we had to give her
the cat-pil. That´s why she developed this. Usually she
would have been neutered at once, but we decided to give her
the chip instead. Now she´s totally recovered... We can
not say for sure that this credit goes to the chip, because
it seems that some cats recover by themseles.
Update March 2013:
the last update was in May
2009, so we start right back there again.
In September 2009 Snoesje got Suprelorin. She got fertile again
exactly after 14 months, but we had no fertile male for her
at that point. Her next litter of 4 wonderful kids was born
in April 2012. Amicus is the father. In April 2012 Nikita also
had kittens from Amicus.
Nikita had her first litter after 14 months Suprelorin in August
2010. Amicus had Suprelorin again in March 2010 his first litter
after that was born on 23-01-2012. We found out that Suprelorin
also works exactly 18 months on his father. So we now know that
Amicus will not be fertile before 18 months after Suprelorin,
just like his father. Amicus had Suprelorin again in May 2012.
Icarus and Snoesje got Suprelorin in June 2012, and Bugatti
in July 2012. We go on with Suprelorin in March 2013 with Jannik
and Dolly. We are still very happy about this amazing invention!
I often hear that males
who are very calm in fertility take longer time with the implant
to work out. So people should keep that in mind! EVERY cat has
become fertile again after Suprelorin. Even a Bengal male who
had gotten the BIG Suprelorin when he was still a small kitten
has become fertile again! In the contrary i heard some times
that the males were still able to produce litters. So please
keep that in mind, though i don't know the details in these
cases, for example how long that males had the implant. The
first 6 weeks almost every male get more fertile! I had forgotten
about that once and so my Icarus mated two females in secret...
I never had the problem of fertility after those 6 weeks with
my own males. Amicus starts to mate with the females after 10
months with Suprelorin, but it never resulted in kittens.
Update Januari 2014
Our little Dooley got
very fertile at extreme early age (6 months) We treated him
with Suprelorin and now he is a happy and playful boy again!
His brother Smyril followed one month later...
got fertile again also...
Update May 2014
Bugatti got father of
7 kittens together with Snoesje - so both cats had just worn
out the Suprelorin and still it resulted in such a big litter!
Amicus and Jannik are
going to be father again in the middle of July.
Rhythm, Bugatti, Wilma
and Nicky are on Suprelorin again.
Dolly's Suprelorin will be worn out soon and Maya'ssuprelorin
will be worn out in July.
But we will have no plans with them at that time - maybe in
We are still very
happy and grateful for this marvallous invention! Without Suprelorin
we would never be able to keep so many males happily in our
midthst, while still beeing able to pass on theire genes once
Many people still
contact me about Suprelorin.
So we found out that the more fertile the nature of a male or
female is, the sooner Suprelorin is worked out! And it's the
other way around for males or females who are very calm and
tender in nature. It works much longer in such cats! One should
keep that in mind before panicking - EVERY cat gets fertile
again! Even a Bengal male who got the double dosage of Suprelorin
at the age of 4 months!!! The double dosage was given because
the vet didn't know that Suprelorin does work much longer in
cats than in dogs!!! For cats you should always use the 4,7mg
Suprelorin!!! It's the one that works 6 months in dogs. On the
other hand we often hear from people that their males keep still
fertile during Suprelorin... Producing big and healthy litters...
You should keep that in mind until you know how it works on
your male!!! This is mostly the case in males who are veeery
fertile when they don't have Suprelorin.
The first 6 weeks
of the implant of Suprelorin the males are getting more fertile!!
Our Icarus never
felt the need to mate with a female... until his Suprelorin
was 3 weeks old... He produced 2 OOPS litters with Snoesje and
Nikita... Amicus starts to mate with the girls again when he
got Suprelorin for 10 months, but it never results in a litter.
He get's really fertile after 18 months, just like his father!!!
Because i wrote
many articles about Suprelorin, which are translated in many
languages, loads of people and vets contact me about it. And
they all keep me informed about their own experiances. Thank
you all for that!!!!
But also some
people contact me to tell me if something went wrong!
They come complaining to me...
Until this day we could always find out that NO problem truely
resulted from the use of Suprelorin!!!
Most of the time it was a result of wrong interpretation, wrong
use or wrong explanation from their vet!
But sometimes there was something wrong with the cat itself
- trouble from the lines, like they found out that the mother
of the cat had similar problems without Suprelorin.
To prevent females getting
permanent into a heat from Suprelorin, simply implant it within
the first two days of the heat!
We know many females
from different breeds, who got pregnant during the first 3 weeks
of Suprelorin. They all got healthy litters, without any problems!!!
So these females were on Suprelorin during the whole pregnancy!!!
Most people contact
me to tell their suprelorin succes stories, like theire cats
are feeling so good and happy!!!