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POM-V Prescription Required

Stenorol Crypto 0.5 mg/ml Oral Solution for Calves

Active ingredient: Halofuginone

Form

Liquid

Species

Cattle

Manufacturer

Huvepharma N.V.

VMD MA No.

30282/5020

What it's used for

Administration should start in the first 24 to 48 hours of age. •Cryptosporidium parvum. Administration should start within 24 hours after the onset of dia...

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

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Paying less for Halofuginone

  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

Stenorol Crypto 0.5 mg/ml Oral Solution for Calves — SPC Details

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

Administration should start in the first 24 to 48 hours of age.
•Cryptosporidium parvum.
Administration should start within 24 hours after the onset of diarrhoea.
In both cases, the reduction of oocysts excretion has been demonstrated.
The dosage is: 100 µg of halofuginone/kg bw/ once a day for 7 consecutive days, i.e. 2 ml
of the veterinary medicinal product/10 kg bw/ once a day for 7 consecutive days.
To ensure a correct dosage, the use of either a syringe or any appropriate device for oral
administration is necessary.
The consecutive treatment should be done at the same time each day.
Once the first calf has been treated, all the forthcoming new-born calves must be
systematically treated as long as the risk for diarrhoea due to C. parvum persists.
Do not use on an empty stomach.
Do not use in case of diarrhea established for more than 24 hours and in weak animals.
Do not use in cases of hypersensitivity to the active substance or to any of the excipients.
Newborn calves:
Very rare
(< 1 animal / 10,000 animals treated,
including isolated reports)
Diarrhoea
1
Increase of the level.
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 the national competent authority via the
national reporting system. See the package leaflet for respective contact details.
None.

Special precautions for safe use in the target species:
Administer after colostrum feeding, or after milk or milk replacer feeding only, using an
appropriate device for oral administration. For treatment of anorexic calves, the veterinary
medicinal product should be administered in half a litre of an electrolyte solution. The
animals should receive enough colostrum according to good breeding practice.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
This veterinary medicinal product contains halofuginone, which can cause allergic
reactions in some people. People with known hypersensitivity (allergy) to halofuginone or
any of the excipients should administer the veterinary medicinal product with caution.
Repetitive contact with the product may lead to skin allergies.
The veterinary medicinal product may be irritating to the skin and eyes and systemic
toxicity cannot be excluded in case of contact with the skin.
Avoid skin, eye or mucosal contact with the veterinary medicinal product.
Personal protective equipment consisting of protective gloves should be worn when
handling the veterinary medicinal product.
Wash hands after use.
In case of skin and eye contact wash the exposed area thoroughly with clean water. If you
develop symptoms following exposure, such as skin rash or eye irritation, you should seek
medical advice and show the physician this warning. Swelling of the face, lips and eyes or
difficulty in breathing are more serious symptoms and require urgent medical attention.
Special precautions for the protection of the environment:
Not applicable.
Other precautions:
Not applicable.
None known.
Do not store above 25°C. Store in the original container in order to protect from light.
Meat and offal: 13 days.

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.

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