Incurin 1mg Tablets for Dogs

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Some bitches which have been spayed will leak urine when they are asleep or at rest. This condition, which can start to happen a few years later, is partly due to the different hormone levels found. Incurin contains a low dose of Estriol, an oestrogen which acts on the bladder and urethra to help prevent urine leaking ("sphincter mechanism incontinence"). Usually the dose is one tablet per day, or a maximum of 2 daily. Many bitches show a good response and after a period of time, the dose can be reduced, or given on alternate days. Medication is usually required lifelong.


Qualitative and quantitative composition

Active substance: estriol 1 mg/tablet.

See list of full excipients in section "Pharmaceutical particulars".

Pharmaceutical form

Round single-scored tablets.

Clinical particulars

Target species

Dogs (bitches).

Indications for use

The treatment of hormone-dependent urinary incontinence due to sphincter mechanism incompetence in ovariohysterectomised bitches.


Do not use in intact bitches, as the efficacy has only been established in ovariohysterectomised bitches. Animals showing a polyuria-polydipsia should not be treated with Incurin. The use of Incurin is contraindicated during pregnancy, lactation and in animals younger than 1 year.

Special warnings for each target species

High doses of oestrogen may have a tumour-promoting effect in target organs with oestrogen receptors (mammary glands).

Special precautions for use

In case of oestrogenic effects, the dose should be lowered.

Adverse reactions

Oestrogenic effects such as swollen vulva, swollen mammary glands and/or attractiveness to males and vomiting have been observed at the highest recommended dose of 2 mg per dog. The incidence is about 5-9 %. These effects are reversible after lowering the dose. In rare cases vaginal bleeding occurred. In rare cases development of alopecia has also been observed.

Use during pregnancy, lactation or lay

Do not use this product during pregnancy or lactation. See also Contraindications above.


None known.

Amounts to be administered and administration route

For oral administration. A relationship between final effective dose and body weight has not been established and therefore the dose has to be determined for each dog on an individual basis. The following dosing schedule is advised: start treatment with 1 tablet (1 mg estriol) every day. If treatment is successful, lower the dose to half a tablet a day. If treatment is not successful, increase the dose to 2 tablets a day to be given in one dose. Some dogs do not need daily treatment; treatment every other day may be tried, once the effective daily dose has been established. The minimum dose given should not be less than 0.5 mg per dog per day. Ensure the dose used to achieve the therapeutic effect is as low as possible. Do not use more than 2 tablets per dog per day. If no response to treatment is obtained the diagnosis should be reconsidered in order to investigate other causes for the incontinence such as neurological disorders, bladder neoplasia, etc. Animals should be re-examined every 6 months during treatment.


In case of overdose typical oestrogen effects may occur. These effects are reversible after lowering the dose.

Withdrawal periods

Not applicable.

Pharmacological particulars

Pharmacotherapeutic group: estrogens, ATCvet code: QG03CA04.

Pharmacodynamic properties

Estriol is a short-acting natural oestrogen. In ovarioectomised female dogs it has a beneficial effect on urinary incontinence. In the target animal safety study and the clinical trials, including long-term treatment, no signs of bone marrow suppression were observed. This is probably due to the short-acting oestrogenic character of estriol.

Pharmacokinetic properties

After oral administration Estriol is nearly completely absorbed from gastrointestinal tract. Nearly the whole Estriol is bound to Albumin in Plasma. Estriol is excreted in conjugated from via the urine. After oral administration of multiple doses no accumulation occurs.

Pharmaceutical particulars


Amylopectin, Potato starch, Magnesium stearate and Lactose

Major incompatibilities


Shelf life

3 years.

Special precautions for storage

Do not store above 30°C.

Immediate packaging

Blister package of clear PVC film backed by aluminium foil provided with heat seal coating (vinyl copolymer) on the side in contact with the tablets. One blister contains 30 tablets.

Pack size: carton box with 1 blister.


Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal product should be disposed of in accordance with local requirements.

Marketing Authorisation Holder (if different from distributor)

Date of the first authorisation or date of renewal

15 March 2000

Date of revision of the text

15 March 2010

Any other information


Legal category


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All prices include VAT where applicable.

Information regarding the safe use of all licensed medication supplied in the UK can be found on the Veterinary Medicine Directorate website. Follow this link and then search for the brand name of the product to find the official Summary of Product Characteristics for that product. Unlicensed medication, such as herbal supplements, will not be found here and there is no such formal recognition of any scientifically proven therapeutic effects from any unlicensed medication.

Summary of Customer Ratings & Reviews for Incurin 1mg Tablets for Dogs

Overall Rating:
5 out of 5
  • Effectiveness
    4 out of 5
  • Ease Of Use
    5 out of 5
  • Value For Money
    4 out of 5
  • Absence Of Side Effects
    5 out of 5

1 out of 1 (100%) customers would recommend this product.

5 stars
1 reviews
4 stars
0 reviews
3 stars
0 reviews
2 stars
0 reviews
1 star
0 reviews

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Write a Review!
5 out of 5

Excellent invaluable!

9th May 2013
Carole-Anne Moore's photo
  • VioVet Customer Since: April 2013
  • From: VAR, France
  • Pet's Name: Xiao Li
  • Species: Dog
  • Breed: Shar-Pei

Unfortunately not all vets tell you, when speying a female dog that later this can have repercussions of incontinence as they remove only the ovaries therefore the hormones! This product is a godsend for myself and my dog Xiao Li, as one tab every 2 days gives her enough estradiol to prevent her from embarassing herself and messing up our house, even though Shar Peis have no smell to their urine.

  • Effectiveness
    4 out of 5
  • Ease Of Use
    5 out of 5
  • Value For Money
    4 out of 5
  • Absence Of Side Effects
    5 out of 5
Carole-Anne Moore would recommend this to a friend!
Number of people who found this review helpful:

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