Prescribing Cascade and Specials
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Prescribing cascade & veterinary specials

The cascade empowers veterinary surgeons to prescribe medications that are not authorised medications, including those commonly referred to as 'specials', in certain circumstances and in the interest of animal welfare. We've provided advice and guidance on these pages to help you when using the cascade.

Client consent form, information leaflets and labels

We've put together a range of resources, including a consent form, client information leaflets and medicine labels, which provide key information relevant to the equines and ensure you are compliant with the RCVS Code of Professional Conduct.

Browse resources
Government guidance and regulations
  1. The cascade
  2. Prescribing unauthorised medicines

  3. Importing medicines
  4. for veterinary use into the UK

  5. Responsible antibiotic use
  6. under the prescribing cascade

Frequently asked questions
Is it illegal to use specials?

No, specials can be lawfully used under the prescribing cascade. Please see the other resources on this page for guidance on the use of the cascade.

When is it appropriate to use specials?

The following table sets out more detail regarding the circumstances in which a special may be preferred:

DosageThe veterinary surgeon considers that optimal treatment requires a dosage regime that is different from an authorised product’s labelled specifications.
Individual CharacteristicsParticular characteristics of the patient animal (eg, age, general condition, sensitivity to a particular substance, etc) contra-indicate the use of an authorised product.
Animal Owner ConsiderationsParticular characteristics of the patient animal’s owner mean that an authorised product would not be optimal for treatment (eg, an elderly or disabled owner may have difficulty in crushing and administering tablets, etc).
Chronic InfectionsA condition persists following treatment with an authorised product.
Complex ConditionsThe patient animal has multiple conditions (eg, pneumonia with fluid retention) and the veterinary surgeon considers that an extemporaneous preparation is required in order to minimise incompatibilities and side effects.
Unavailability of ProductAn authorised product cannot be obtained in a reasonable time (eg, one does not exist or supply is interrupted). Please note that the VMD publishes a list of known supply issues online


Is cost a reasonable justification for the use of specials?

Position statement on cost considerations and the prescribing Cascade

BEVA believes that veterinary professionals must be empowered, not discouraged, to apply the prescribing Cascade in the best interests of animal welfare. Decisions should be based on clinical judgement, informed by pharmaceutical quality, and responsive to the needs of the individual patient, including considerations of access to care.

The Veterinary Medicines Regulations (VMR) provide the legal authority for veterinary surgeons to prescribe under the Cascade on a case-by-case basis. These regulations do not prohibit cost from being considered when selecting appropriate treatment in accordance with the Cascade’s risk-based framework.

Current VMD guidance advises that a human medicine should not be selected solely because it is cheaper. However, this is not the same in cases where the cost of a medicine represents a genuine barrier to care. These situations are clinically and ethically distinct. When an authorised veterinary product is not suitable because a client’s financial limitations would prevent access to treatment, the Cascade may lawfully and appropriately be applied to ensure the animal receives veterinary care.

Veterinary professionals are encouraged to maintain records justifying Cascade use, especially when decisions relate to cost being a barrier to care. However, such records are a tool of professional accountability, not a basis for retrospective criticism or coercion. The attending veterinary surgeon is legally and ethically responsible for the decision, and that decision must be respected. BEVA reminds all parties that attempts to influence, constrain or override a clinician’s decision under the Cascade may constitute an offence under the VMR.

BEVA recognises that assessing a client's financial capacity, particularly in equine practice, is complex and sensitive. To support practitioners, BEVA has produced example text for consent forms that allows clients to declare when financial constraints may limit treatment options. This places the responsibility for disclosing financial barriers with the owner, rather than requiring the veterinary professional to make assumptions or judgments about affordability.

As the professional body representing equine veterinary medicine in the United Kingdom, BEVA will continue to support lawful, patient-centred prescribing and the proper application of the Cascade. We call on regulators, suppliers and stakeholders to support veterinary clinical freedom and uphold the integrity of case-based decision-making. Where imported veterinary products may be needed, BEVA supports the use of pre-emptive Special Import Certificates (SIC) to ensure lawful access and availability, including the holding of stock in anticipation of individual clinical need in accordance with this position. Such applications must be based on a realistic assessment of clinical need, including the likely number of cases and dosage requirements.

Take home message

Veterinary clinical judgement—not price tags, pressure, or protocol—must guide cascade prescribing. When cost creates a barrier to care, the law supports responsible, patient-focused decisions. BEVA stands firmly behind vets who act lawfully to safeguard animal welfare.

Owner declaration (example)

I have been advised to treat my horse with the medicine described below. However, I have declined that option based on cost.

Medicine: XXXXXXX

I understand that this may prevent my horse from receiving necessary care.

I have therefore consented to the use of an alternative product under the prescribing Cascade, in the interests of my horse’s welfare and to ensure that treatment is not delayed or withheld.


See our Clinical Catch-Up recording 'The Cascade in practice' for additional information.

The audio is also available as BEVApod Focus episode on our podcast channel.

What should I tell clients?

Clients should be made aware of the unauthorised status of the product and should be provided with detailed client information leaflets.

Can I hold specials in stock?

Veterinary specials can be held in stock but stock levels should be justified by clinical needs under the cascade, taking into account the shelf-life of the relevant product.

Where should I obtain specials medicine?

Veterinary surgeons should obtain specials only from reputable specials manufacturers that hold a Manufacturing Extemporaneous Products (Specials) Authorisation from the VMD. Such licensed manufacturers are required to comply with the principles of Good Manufacturing Practice (GMP). Specials should be ordered directly from the manufacturer and not via a third party or wholesaler. It is important to note specials are not available for sale except through veterinary surgeons; they cannot be dispensed against a prescription by a client.

What is BEVA's view on specials?

BEVA believes that 'Specials' have a limited but important role in the treatment of the horse given the limited availability of licensed medicines and the challenges of formulation when using either animal or human medical products.

We believe veterinary surgeons should only make use of specials only where no suitable product exists using the principles of the Cascade, or in exceptional cases where the supply of licensed products is interrupted.

Veterinary specials should not be used where a veterinary medicine licensed for use in horses or food animal species is available containing the same active substance unless the available route of administration is inappropriate in a specific animal.

In some cases, veterinary specials may be appropriate where human or veterinary medicines licensed for use in small animal are available, but their strength or formulation is inappropriate for use in specific cases.

Veterinary specials should be ordered directly from the manufacturer and not via a third party or wholesaler. Clients should be made aware that such products cannot be obtained from online veterinary pharmacies.

Clients should be made aware of the unauthorised status of the product and should be provided with detailed client information leaflets that detail potential adverse events as well as details about the limitations of veterinary specials. Examples are included on these pages.

Veterinary surgeons should ensure that they obtain specials from a reputable specials manufacturer that holds a Manufacturing Extemporaneous Products (Specials) Authorisation from the VMD and is compliant with principles of GMP.

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