Suprelorin Implant for Dogs

Suprelorin Implant for Dogs
4.7mg » 2 Implants

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  • 4.7mg » 2 Implants £129.99
  • 9.4mg » 2 Implants £249.99

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£129.99 to £249.99


Suprelorin implants are used in dogs in order to induce temporary infertility. Treated dogs will become infertile after about 6 weeks and remain so for about 6 months or more. If a new implant is provided every 6 months, then permanent infertility can be achieved.Occasionally a dog which has received a Suprelorin implant will mate and tie with a bitch in season. This mating will be very unlikely to result in fertilisation and pregnancy, but appropriate checks should be made as necessary to verify this. If a new implant is not provided after 6 months duration, then any return to fertility may or may not occur.

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Medication Datasheets

Reviews (6)

Summary of Reviews for Suprelorin Implant for Dogs

Overall 5
Value For Money
Ease Of Use
Absence Of Side Effects
6 out of 6 (100%) customers would recommend this product.
5 stars (3 reviews)
4 stars (3 reviews)
3 stars (0 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 For a cat
Verified Purchase

By on 14 December 2021

Much cheaper than ordering through my vet and delivered chilled as is essential. Will definitely buy again.

Customer recommends this product

45 Great
Verified Purchase

By on 27 November 2020

My duck has a calcium gland fault and this stops her laying and becoming egg bound or trying to make eggs instantly. Sometimes only lasts a month and sometimes lasts 3 - 4 months but worth it to keep her happy and healthy and saves me about £40 getting prescription rather than direct from vets. Does cause a heavy moult every time she has a new one and sometimes causes her to lose her appetite for a week and be a bit quietfollowing having it implanted

Customer recommends this product

45 An alternative to castration
Verified Purchase

By on 28 October 2019

Expensive, but gives you a chance to decide if castration is the answer, without the finality

Customer recommends this product

55 Works well for ferrets
Verified Purchase

By on 22 February 2019

I am in the US where it is very difficult to get this for my ferrets. When I do find it it's very expensive. The price is very fair even with the shipping. The package arrived within a few days and was well wrapped. My vet is very pleased with the implant.

Customer recommends this product

55 Use in chickens
Verified Purchase

By on 9 April 2017

Fantastic to help in treatment of yolk peritonitis and reproductive tract tumours in chickens, although sometimes has only laster 6 weeks. Well worth it to a retired hen months-years of happy healthy life.

Customer recommends this product

1 person found this review helpful

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Q & A

Below are some recent questions we've received regarding Suprelorin Implant for Dogs, including answers from our team.

8 April 2022 at 4:46pm

Conditions to be kept in


I spotted someone else's question and response about the shelf life of the implants. You seem to have a 'temperature controlled' label on the webpage - can you tell me what conditions these implants need to be kept in if they are to have a shelf life of 2 years?
Also, is the effectiveness the same over the timespan of the shelf life or will the implant become less effectiive over time? For example, if I were to use one implant now and another in a years time, will the effectiveness of both implants be the same despite the age difference?
Many thanks,

  • VioVet Staff

These implants need to be stored at refridgerated temperatures (between 2C and 8C). They will not degrate over time whilst in date and will be suitable for use right up to to the expiry date stated on the medication itself, as long as the storage requirements are met.
We stock medications direct from licensed wholesalers which means we cannot predict expiry dates unfortunately, as we do not manufacture the product. We therefore can only guarantee expiry dates of up to 6 months from the date of dispatch. If you wish to order medication for use in a years time then it is likely the expiry date will be beyond this, but we unfortuantely cannot guarantee it or refund for any unused medication beyond 6 months from the date of dispatch.

4 January 2022 at 12:13pm

Surgical castration


How long do you have to wait to get the dogs surgically castrated after having the 6 month implant? He's only 3.4kg and he's had the implant just over 6 month, his testicles appear to be starting to get bigger , so I'm assuming it's wearing off.

  • VioVet Staff

It is best to ask this question to your vet who will perform the surgery. There are no contraindications in the datasheet to suggest castration should be delayed or avoided when an implant is present.

30 September 2021 at 4:07pm

odette Hart

can I buy a single implant of supre Lorin ? why are they sold in packs of 2 when you only have 1 pet.

  • VioVet Staff

The manufacturer produces this medication in packs of two so unfortunately they can only be purchased in this form. I apologise for any inconvenience caused.

4 June 2021 at 11:44am


Mr David A Sherwood

How long should suprelorin implant last in cats.

  • VioVet Staff

The use of Suprelorin in cats is off license so unfortunately we cannot advise on this for you. I recommend discussing this with your vet who will be able to advise.

11 December 2020 at 2:05pm

Implant dose


The data sheet states 1 implant per dog regardless of the size of the dog so why does the implant come in 2 different dose sizes?

  • VioVet Staff

The different sizes determine how long the effects are seen for. The 4.7mg implant is only licensed for dogs and lasts for 6 months whilst the 9.4mg is licensed for dogs and ferrets, in dogs the effects last up to 12 months and in ferrets 4 years.

8 July 2020 at 5:15pm



Hello, my entire male dog has had the suprelorin injection 8 weeks ago. My bitch has just come into season. He is now very interested in her and has tried to mount her but I jumped in and moved him away. Is the injection 100% effective at stoping him being fertile? I don’t want any puppies! Thank you.

  • VioVet Staff

Infertility is achieved from 6 weeks up to at least 6 months after initial treatment. Treated dogs should therefore still be kept away from bitches in heat within the first 6 weeks following initial treatment. Rarely, matings may occur during the 6 months but no pregnancy results. Any mating that occurs more than 6 months after the administration of the product may result in pregnancy. However, it is not necessary to keep bitches away from treated dogs following subsequent implantations, provided that the product is administered every 6 months.

5 April 2017 at 6:21pm

Humping in dogs


Hi if a dog has the implant does it stop it humping? Mine have had the implant in for 3 weeks now but they still want to hump & chase bitches that are in season

  • VioVet Staff

Over time this behaviour may stop as it can take 6 weeks for Suprelorin to be fully effective. However for some dogs this is now a learned behaviour and whilst the Suprelorin will be working to induce temporary infertility in your dogs the behaviour may or may not change.

18 February 2017 at 8:21am

Buying and administering

Alison Briggs

  • VioVet customer since 2016
  • From: Derbyshire , United Kingdom

Could I get a prescription from my vet and administer myself
Or get a prescription and get my vet to administer
As the cost through the vet was astronomical

  • VioVet Staff

Yes we would be happy to supply you with Suprelorin with a prescription from your vet. It would be best for your vet to then administer the Suprelorin but it is up to them to decide whether they are happy for you to administer it or not.

12 September 2016 at 2:04pm

How long does this keep?


  • VioVet customer since 2014
  • From: Bedfordshire, United Kingdom

I notice these come in packs of two. Does the second implant keep, or do they both need to be used at the same time (obviously on different animals!)?
If they keep, how long for please? Thanks!

  • VioVet Staff

Each implant comes in a sterilised, sealed foil packet and has a shelf life of 2 years so are fine to keep.

5 October 2015 at 6:50pm

Suprelorin dosage

Danielle Jones

I have a border collie aged 5yrs. Is the 4.7mg dosage what I need? I wish to try out Suprelorin to see if it will stop him from 'humping' people. I am unsure if I should get him castrated, but if this product dampens his testosterone levels and his libido it would indicate what he would be like if castrated. I have done a lot of research on the pros and cons of castration and I believe that it reduces testosterone levels by 90% leaving a vital 10% for good health, whereas continued use of Suprelorin would remove 100%. Obviously there is a risk of being under a general anaesthetic, but there is also a risk of infection with a foreign body under his skin. Please advise. Also are there any customer reviews?

  • VioVet Staff

This is a prescription product and your vet has to decide what implant to use if you go for this. Personally I would say that the behaviour you are seeing might at least partly be learned and ingrained. Castration or the use of the implant might not affect it. The potential side effects of the implant are very unlikely to be significant, so personally I would try one and see if it has the desired result. If it does, then I would choose castration above repeated use of implants in future, but again your vet can advise you.

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