Ypozane Tablets for Dogs

Ypozane Tablets for Dogs
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1.875mg ¬Ľ Box of 7
7.5mg ¬Ľ Box of 7
15mg ¬Ľ Box of 7

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  • 1.875mg ¬Ľ Box of 7 ¬£21.55
  • 3.75mg ¬Ľ Box of 7 ¬£30.38
  • 7.5mg ¬Ľ Box of 7 ¬£46.88
  • 15mg ¬Ľ Box of 7 ¬£59.99

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Ypozane is used to treat a condition which causes an enlarged prostate gland in older male dogs. Known medically as “benign prostatic hypertrophy”, this is not related to cancer but does mean that the enlarged gland gets in the way of adjacent organs, often causing difficulty with going to the toilet and sometimes abdominal pain. The normal function of the prostate is to produces a fluid that is part of the semen. It serves no useful job for the average pet dog. Ypozane contains a hormone which effectively blocks the effect of testosterone on the prostate, allowing it to shrink back to a more normal size.

Ypozane is given once daily for one week. The useful effect is normally noticed about 1 week later, and it then persists for 5 months. Repeat courses of treatment can be given. It is also possible to give Ypozane concurrently with antibiotics if bacterial prostatitis is being treated. There are no known adverse interactions with other medications.

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Medication Datasheets


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Q & A

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

7 March 2022 at 10:12pm



Does this meds make dogs more hungry ?

  • VioVet Staff

The datasheet for this medication states that 'A transient increase in appetite occurs very commonly.'

26 February 2022 at 7:03am

What dosage

Zoe Goundrill

What dosage would i give my 58kilo mastiff please

  • VioVet Staff

This is a prescription only medication so you should seek your vet for dosing advice, they will need to prescribe it to you. According to the datasheet the dose is as follows:

Administer 0.25 ‚Äď 0.5 mg osaterone acetate per kilogram bodyweight, once a day, for 7 days as follows:
*No data are available for dogs less than 3 kg bodyweight.
Tablets can be given either directly into the mouth or with food. The maximum dose should not be exceeded.

The onset of clinical response to treatment is usually seen within 2 weeks. The clinical response persists for at least 5 months after treatment.
Re-evaluation by the veterinarian should take place 5 months after treatment or earlier if clinical signs recur. A decision to retreat at this or at a later time point should be based on veterinary examination taking into account the risk benefit profile of the product. If clinical response to treatment is considerably shorter than expected, a re-evaluation of the diagnosis is necessary.

This means your 58kg dog will likely need 1 x 15mg tablet daily for 7 days. However you should check this with your vet as they may want to recommend an off label doseage.

14 August 2021 at 5:51am



Min collie, behandlades för 3 gången med ypazane., först dec.2018, sedan september 2020, och nu för 14 dagar sedan. De första 2 gångerna så fungerade det bra. Men denna tredje gång, är hunden jätte- slö, han orkar knappt gå, men har god aptit, men bara sover. Hunden är 11 år. Hur lång tid kan det ta innan letargin försvinner?

  • VioVet Staff
Databladet för denna produkt anger följande:

En övergående aptitökning ökar mycket vanligt.
√Ėverg√•ende beteendef√∂r√§ndringar som √∂kad eller minskad aktivitet eller mer s√§llskapligt beteende √§r vanliga.
Andra biverkningar, inklusive övergående kräkningar och/eller diarré, polyuri/polydipsi, slöhet eller feminiseringssyndrom inklusive bröstkörtelhyperplasi förekommer ovanligt.
En övergående minskning av plasmakortisol sker hos de flesta behandlade djur.
I kliniska prövningar avbröts inte behandlingen med det veterinärmedicinska läkemedlet och alla hundar återhämtade sig utan någon specifik behandling.

Slöheten du beskriver är en av de listade biverkningarna. Jag rekommenderar att du diskuterar detta med din förskrivande veterinär men enligt databladet ska det rensas när behandlingen avbryts.
9 April 2021 at 6:59pm

Affect on stud dog


Does the drug have any effect on production or quality of semen while dog is on treatment

  • VioVet Staff

The data sheet for this product states  that 'No adverse effects on semen quality have been observed.' However the effect of the drug on reproductive success is not specifically mentioned, I recommend contacting your prescribing vet so they can contact the manufacturer and advise on this.

26 March 2021 at 7:19am

How long does it take for the medication to work


I just wanted to know should we see a improvement 2 weeks after giving the medication or is it from the first day we give the medication and then the two weeks start

  • VioVet Staff

The datasheet of this medication states the following:
The onset of clinical response to treatment is usually seen within 2
weeks. The clinical response persists for at least 5 months after

This means you should see an improvement of some kind within 2 weeks. I recommend discussing this with your vet though as they will be aware of the entire condition they are treating.

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