Skip to content
POM-V Prescription Required Companion Animal

Trilotab 10 mg Chewable Tablets for Dogs

Active ingredient: Trilostane

Form

Tablet

Species

Dogs

Manufacturer

CP Pharma Handelsgesellschaft mbH

VMD MA No.

20916/3004

What it's used for

For the treatment of pituitary-dependent and adrenal-dependent hyperadrenocorticism (Cushing’s disease and syndrome).

Full indications, dosage and side effects ↓
View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Trilostane

  1. 1

    Ask your vet for a written prescription

    They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.

  2. 2

    Fill it at a registered online retailer

    The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Trilotab 10 mg Chewable Tablets for Dogs — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

For the treatment of pituitary-dependent and adrenal-dependent
hyperadrenocorticism (Cushing’s disease and syndrome).
Administer once daily with a meal.
The starting dose for treatment is approximately 2 mg trilostane /kg bodyweight,
based on available combinations of (divided) tablet sizes. This tablet strength is
therefore not appropriate for dogs weighing less than 1.25 kg.
Titrate the dose according to individual response, as determined by monitoring (see
below). If a dose increase is required, use combinations of (divided) tablet sizes to
slowly increase the once daily dose. A wide range of divisible tablet sizes enables
optimum dosing for the individual dog. Administer the lowest dose necessary to
control the clinical signs.
Ultimately, if symptoms are not adequately controlled for an entire 24 hour inter-dose
period, consider increasing the total daily dose by up to 50% and dividing it equally
between morning and evening doses.
A small number of animals may require doses significantly in excess of 10 mg per kg
body weight per day. In these situations appropriate additional monitoring should be
implemented.
Monitoring:
Samples should be taken for biochemistry (including electrolytes) and an ACTH
stimulation test pre-treatment and then at 10 days, 4 weeks, 12 weeks, and
thereafter every 3 months, following initial diagnosis and after each dose adjustment.
It is imperative that ACTH stimulation tests are performed 4 – 6 hours post-dosing to
enable accurate interpretation of results. Dosing in the morning is preferable as this
will allow your veterinary surgeon to perform monitoring tests 4-6 hours following
administration of the dose. Regular assessment of the clinical progress of the
disease should also be made at each of the above time points.
In the event of a non-stimulatory ACTH stimulation test during monitoring, treatment
should be stopped for 7 days and then re-started at a lower dose. Repeat the ACTH
stimulation test after a further 14 days. If the result is still non-stimulatory, stop
treatment until clinical signs of hyperadrenocorticism recur. Repeat the ACTH
stimulation test one month after re-starting treatment.
Do not use in animals suffering from primary hepatic disease and/or renal
insufficiency.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Dogs:
Rare
(1 to 10 animals / 10,000
animals treated):
Ataxia, Muscle tremor
Hypersalivation, Bloated
Generalised skin reaction
Undetermined frequency
(cannot be estimated from the
available data)
Adrenal gland disorders, Hypoadrenocorticism
1,2

and Addison disease
Sudden death
Lethargy
, Anorexia
Vomiting
, Diarrhoea
1
: Signs associated with iatrogenic hypoadrenocorticism, including weakness,
lethargy, anorexia, vomiting and diarrhoea (particularly if monitoring is not adequate,
see section 3.9 ‘Administration routes and dosage’. Signs are generally reversible
within a variable period following withdrawal of treatment.).
: possible result from adrenal necrosis
: Acute Addisonian crisis (collapse) (see section 3.10 ‘Symptoms of overdose (and
where applicable, emergency procedures and antidotes)’.
: in the absence of evidence of hypoadrenocorticism.
Corticosteroid withdrawal syndrome or hypocortisolaemia should be distinguished
from hypoadrenocorticism by evaluation of serum electrolytes.
Subclinical renal dysfunction may be unmasked by treatment with the product.
Treatment may unmask arthritis due to a reduction in endogenous corticosteroid
levels.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a veterinarian, to
either the marketing authorisation holder or its local representative or the national
competent authority via the national reporting system. See the package leaflet for
respective contact details.
An accurate diagnosis of hyperadrenocorticism is essential.
Where there is no apparent response to treatment, the diagnosis should be re-
evaluated. Dose increases may be necessary.
Veterinarians should be aware that dogs with hyperadrenocorticism are at increased
risk of pancreatitis. This risk may not diminish following treatment with trilostane.

Special precautions for safe use in the target species:
As the majority of cases of hyperadrenocorticism are diagnosed in dogs between the
ages of 10-15 years, other pathological processes are frequently present. It is
particularly important to screen cases for primary hepatic disease and renal
insufficiency as the product is contraindicated in these cases.
Subsequent close monitoring during treatment should be carried out. Particular
attention should be paid to liver enzymes, electrolytes, urea and creatinine.
The presence of diabetes mellitus and hyperadrenocorticism together requires
specific monitoring. If a dog has previously been treated with mitotane, its adrenal
function will have been reduced. Experience in the field suggests that an interval of at
least a month should elapse between cessation of mitotane and the introduction of
trilostane. Close monitoring of adrenal function is advised, as dogs may be more
susceptible to the effects of trilostane.
The product should be used with extreme caution in dogs with pre-existing anaemia
as further reductions in packed-cell volume and haemoglobin may occur. Regular
monitoring should be undertaken.
The tablets are flavoured. In order to avoid any accidental ingestion, store tablets out
of reach of animals.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
Accidental ingestion of the product can cause gastrointestinal effects, such as
nausea and vomiting.
Avoid hand to mouth contact. To avoid accidental ingestion, especially by a child,
unused tablet parts should be placed back into the blister and carton and carefully
kept away from children. Part used tablets should be used at the time of the next
dose.
In case of accidental ingestion, seek medical advice immediately and show the
package leaflet or carton to the physician.
Wash hands with soap and water after use.
Trilostane may decrease testosterone synthesis and has anti-progesterone
properties.
Women who are pregnant or are intending to become pregnant should avoid
handling the product.
The product may cause skin and eye irritation. After contact of the product with eyes
or skin, wash with plenty of water. If irritation persists, seek medical advice.
This veterinary medicinal product may cause hypersensitivity reactions. People with
known hypersensitivity to trilostane should avoid contact with the product. If you
develop allergic symptoms such as a skin rash, swelling of the face, lips or eyes
following exposure to the product, seek medical advice and show the package leaflet
or label to the physician.
Special precautions for the protection of the environment:
Not applicable.
The possibility of interactions with other medicinal products has not been specifically
studied. Given that hyperadrenocorticism tends to occur in older dogs, many will be
receiving concurrent medication. In clinical studies, no interactions were observed.
The risk of hyperkalaemia developing should be considered if trilostane is used in
conjunction with potassium-sparing diuretics or ACE inhibitors. The concurrent use of
such drugs should be subject to a risk-benefit analysis by the veterinary surgeon, as
there have been a few reports of deaths (including sudden death) in dogs when
treated concurrently with trilostane and an ACE inhibitor.
Do not store above 25°C.
Any remaining portions of divided tablets should be returned to the opened blister
and given at the next administration.
Not applicable.
4.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.

Medication costs adding up?

Pet insurance can cover prescription medications. Find the right policy for your pet.

Compare insurance

Find cheaper vets near you

Compare vet consultation prices in your area. Save on procedures and get a prescription to buy medications online.