Your patient’s botulinum toxin has arrived.
Then they cancel.
Can you use it for tomorrow’s patient?
Your prescriber has issued a PSD — but can another practitioner administer under it? How long does the PSD remain valid? Can a PSD be issued remotely? And does having a PSD allow you to keep botulinum toxin as general clinic stock?
These are not minor administrative questions. They go to the heart of patient-specific prescribing, medicines governance, traceability and accountability in aesthetic practice.
A Patient Specific Direction is exactly what its name suggests: Patient. Specific.
It isn’t simply paperwork attached to a toxin order. It represents an individual prescribing decision for an identified patient — and understanding that distinction matters when prescription medicines are supplied and administered.
What Is a Patient Specific Direction (PSD)?
A Patient Specific Direction — usually shortened to PSD — is the traditional term for a written instruction from a prescriber for a medicine to be supplied and/or administered to a named individual after the prescriber has assessed that person individually.
Importantly, a PSD is not itself defined in legislation. NHS Specialist Pharmacy Service explains that, in practice, a PSD is commonly referred to as a prescription because it represents an individual prescribing decision.
The principle is straightforward:
PATIENT IDENTIFIED → PATIENT ASSESSED → PRESCRIBER DECIDES → PSD / PRESCRIPTION → MEDICINE SUPPLIED → MEDICINE ADMINISTERED → ADMINISTRATION RECORDED
Three words matter: WRITTEN. PRESCRIBER. PATIENT-SPECIFIC.
Is a PSD the Same as a Prescription?
A PSD represents patient-specific prescribing. When a prescriber assesses an individual, makes a clinical decision and writes an instruction tailored to that individual for the supply and/or administration of a medicine, SPS describes this as prescribing.
Where a PSD is used for the supply of medicine, SPS states that it is classified as a prescription form and must comply with the applicable requirements for prescriptions under the Human Medicines Regulations 2012.
There must therefore be a genuine prescribing decision behind the document. A PSD is not simply: “Please supply one box of toxin.” The patient comes first.
Why Are PSDs Important for Botulinum Toxin?
Because botulinum toxin is a Prescription Only Medicine (POM).
This becomes particularly important when the practitioner administering the treatment is not themselves a prescriber. The PSD helps connect the patient, prescriber, medicine and person administering it, but it does not remove anybody’s professional responsibilities.
See Who Can Prescribe Botulinum Toxin in the UK? A Practitioner Guide.
Who Can Write a Patient Specific Direction?
A PSD must come from an appropriate prescriber. SPS uses “prescriber” in its PSD guidance to cover doctors, dentists and relevant independent, supplementary and community practitioner nurse prescribers, subject to their prescribing authority and framework.
The important distinction is that being a healthcare professional does not automatically mean you can prescribe. A nurse is not automatically an independent prescriber. A pharmacist is not automatically an independent prescriber. And a practitioner being highly experienced in aesthetics does not itself confer prescribing rights.
This is why practitioners should know who their prescriber actually is and on what basis they are prescribing. Read our guide to who can write and authorise botulinum toxin prescriptions in the UK.
What Information Should a PSD Include?
For administration of a medicine, SPS says the minimum information should include:
- patient name and/or other appropriate patient identifiers;
- age if the individual is a child;
- medicine name;
- medicine form and strength;
- route of administration;
- dose;
- frequency;
- treatment date, number of doses, frequency or treatment end date as applicable;
- prescriber’s signature; and
- date the PSD was written.
Signatures can be handwritten or electronic. More information may be required depending on the medicine and identified risks.
In practical terms, the direction should make clear who the patient is, what is being prescribed, the strength and dose, how and when it is to be administered, and who authorised it.
Can a PSD Be Verbal?
No. A PSD must be written. SPS specifically states that a verbal instruction is not a PSD. Written authorisation can be electronic or handwritten, with the appropriate prescriber authorisation.
So “the prescriber said it was fine” is not the same as having an appropriate written PSD.
Does the Prescriber Have to Assess the Patient?
Yes. This is fundamental.
A PSD follows an individual clinical assessment. The pathway should therefore be: Patient → Assessment → Independent prescribing decision → PSD.
SPS states that the prescriber is responsible for assessing the individual and deciding whether to authorise the supply and/or administration of the medicine. The PSD is therefore much more than an ordering form.
Can a PSD Be Issued Remotely?
There isn’t a universal answer that applies to every prescriber. SPS directs prescribers considering writing a PSD remotely to the requirements and guidance of their own professional regulator.
Doctors
GMC guidance requires doctors to carry out a physical examination before prescribing non-surgical cosmetic medicines such as injectable botulinum toxin. Doctors must not prescribe these medicines remotely.
Nurse and Midwife Independent Prescribers
Since 1 June 2025, the NMC requires independent nurse and midwife prescribers to conduct a face-to-face consultation and undertake and document an appropriate clinical assessment before prescribing products used for elective non-surgical cosmetic procedures.
The NMC states that prescribing these products by telephone, email, online, video or communication through a third party is not appropriate. This applies to initial consultations and subsequent consultations and follow-ups where prescribing takes place.
Other Prescribing Professionals
Other prescribers must comply with the law and standards applying to their own profession, prescribing rights, competence and scope.
The key lesson is: do not assume that because a PSD can technically be electronic, the underlying patient assessment can automatically be remote. Those are two different questions.
How Long Is a Patient Specific Direction Valid?
For a PSD authorising administration, SPS states that there is no legally defined validity period. The prescriber should include an appropriate start and finish date so the direction is acted on within a timeframe appropriate to the individual’s needs following assessment.
Where more than one dose is authorised, the number of doses and dosage intervals should be clear. However, a PSD used for the supply of medicine is classified as a prescription form, so prescription-validity legislation applies to the supply.
So the answer to “How long does a PSD last?” is not simply “X months.” It depends on whether you are talking about administration or supply, the direction written by the prescriber and the circumstances of the individual patient.
Can a PSD Cover More Than One Patient?
A written authorisation can include multiple named individuals, provided each person has been individually assessed by the prescriber and the prescriber is satisfied that the medicine meets each individual’s needs.
What it cannot become is “anyone attending my toxin clinic on Saturday.” Those patients have not been individually identified within the PSD. The clue remains in the name: Patient Specific Direction.
Can a Non-Prescribing Practitioner Administer Under a PSD?
Potentially, yes. SPS states that any suitably trained and competent person may follow a PSD for administration, although organisations may restrict who is authorised through their own medicines policies and governance arrangements.
A PSD does not automatically prove that someone is competent to inject, has appropriate aesthetics training, is appropriately insured, is working within their competence, or has satisfied other relevant professional or organisational requirements.
The person administering the medicine remains accountable for their own practice and must be trained and competent for the task. The PSD provides patient-specific authority. It does not manufacture competence.
Who Is Responsible When Administration Is Delegated?
Both parties have responsibilities, but they are not identical.
THE PRESCRIBER: responsible for assessing the patient and making the prescribing decision.
THE PERSON ADMINISTERING: accountable for their own practice and must be appropriately trained and competent.
SPS states that a prescriber delegating administration must be satisfied that the person has the necessary qualifications, experience, knowledge and skills.
For NMC prescribers undertaking elective non-surgical cosmetic work, where administration is delegated the NMC requires the prescriber to ensure that the person is suitably qualified and competent and that the procedure takes place at suitable premises. The prescriber remains responsible for overall oversight and care of the individual, including outcomes and management of adverse incidents or complications.
Your Patient Cancels — Can You Use Their Botulinum Toxin for Someone Else?
This is one of the most commercially frustrating situations for a clinic. But the principle is important.
Medicine dispensed or supplied to a named individual should only be administered to that named individual. A patient’s cancellation does not automatically transform their patient-specific medicine into general clinic stock.
It doesn’t matter that the product is unopened, another patient needs the same treatment, the clinic wants to avoid wastage, or another prescription might be arranged later. The basis on which the medicine was supplied still matters.
If you are unsure, speak to the supplying pharmacy before using it. That single question can prevent a much bigger governance problem.
Can a PSD Be Used to Hold Botulinum Toxin as Clinic Stock?
A patient-specific direction should not be treated as a mechanism for creating unrestricted clinic stock.
This is particularly important for nurse and midwife independent prescribers. The NMC states that the Human Medicines Regulations 2012 permit doctors and dentists to hold POM stock where medicines have not been dispensed by a pharmacist to a named patient. It also states that the MHRA has advised that nurse and midwife independent prescribers are not eligible to be supplied with POMs as stock, subject to the specific exception identified by the NMC for nurse independent prescribers owning Healthcare Improvement Scotland-registered clinics.
PATIENT-SPECIFIC MEDICINE ≠ GENERAL CLINIC STOCK.
PSD vs PGD — What’s the Difference?
PSD — Patient Specific Direction
A patient-specific prescribing mechanism relating to an identified individual following assessment by a prescriber.
PGD — Patient Group Direction
A separate legal mechanism allowing specified registered healthcare professionals to supply and/or administer specified medicines to individuals meeting predetermined criteria without an individual prescription or PSD.
SPS states that supply or administration under a PGD cannot be delegated; the healthcare practitioner operating under the PGD undertakes the whole episode of care. PSD ≠ PGD.
What Happens When a PSD Reaches the Pharmacy?
The document reaching the pharmacy is not necessarily the end of the process. It is the beginning of the pharmacy’s part of it.
Depending on the prescription and circumstances, the pharmacy may need to consider or clarify matters concerning the patient, prescriber, medicine, directions, prescription details or proposed supply.
If something requires clarification, the pharmacy may need to contact the prescriber before proceeding. That isn’t the pharmacy being difficult. It is part of having a regulated medicines pathway.
Why Might Longeva Pharma Query a PSD or Prescription?
Because receiving a document does not remove the pharmacy’s professional responsibilities. Something may be missing, unclear, inconsistent or simply require clinical clarification.
A pharmacy query does not necessarily mean “prescription rejected.” It may simply mean “we need to clarify this before we can proceed.” The best way to reduce avoidable delays is to have a clear prescribing and pharmacy pathway before the patient is sitting in the treatment chair.
What Records Should Be Kept?
SPS states that when medicine is supplied or administered under a PSD, the PSD forms the legal authorisation and should be retained as part of the individual’s clinical record, together with the record of the subsequent administration or supply.
For an aesthetic clinic, good records also support traceability. Can you connect the patient → prescribing decision → medicine supplied → administration → treatment record? If something goes wrong months later, that trail matters considerably more than it did on treatment day.
The 60-Second PSD Check
Before relying on a PSD, can you answer YES to these questions?
- PATIENT — Is the patient clearly identified?
- ASSESSMENT — Has that patient been individually assessed?
- PRESCRIBER — Do you know who made the prescribing decision?
- AUTHORITY — Does that person have appropriate prescribing authority?
- MEDICINE — Is the medicine clearly identified?
- STRENGTH & FORM — Are these clear where required?
- DOSE & ROUTE — Are the administration directions clear?
- DATE & AUTHORISATION — Has the prescriber appropriately dated and authorised the direction?
- ADMINISTRATOR — Is the person administering appropriately trained and competent?
- PATIENT-SPECIFIC SUPPLY — Is medicine supplied for that patient being kept for that patient?
- RECORD — Will administration be properly documented?
- TRACEABILITY — Can the complete journey be reconstructed afterwards?
If the answer to an important question is no: stop and clarify.
8 PSD Mistakes Aesthetic Clinics Should Avoid
- Treating a PSD as an ordering form rather than a prescribing decision.
- Assuming a verbal instruction from the prescriber is enough.
- Treating patient-specific medicine as general clinic stock.
- Using medicine supplied for one named patient on another.
- Assuming the PSD itself proves the administrator is competent.
- Not knowing who actually assessed and prescribed for the patient.
- Working from incomplete or unclear directions.
- Failing to maintain an adequate record and traceability trail.
The Patient-Specific Medicine Journey
1. PATIENT — The individual requiring assessment and treatment.
2. PRESCRIBER — Assesses the patient and makes an independent prescribing decision.
3. PSD / PRESCRIPTION — Records the patient-specific instruction.
4. LONGEVA PHARMA — Carries out the pharmacy’s responsibilities around the prescription, dispensing and supply.
5. PRACTITIONER — Administers within the appropriate framework and their competence.
6. PATIENT RECORD — Administration and relevant medicine details are documented.
7. TRACEABILITY — The medicine can be followed through the patient journey.
That is not unnecessary bureaucracy. That is medicines governance.
Frequently Asked Questions About PSDs in Aesthetics
What does PSD stand for?
PSD stands for Patient Specific Direction. It is the traditional term for a written instruction from a prescriber for medicine to be supplied and/or administered to a named individual following individual assessment.
Is a PSD a prescription?
A PSD represents patient-specific prescribing. Where a PSD authorises the supply of medicine, SPS states that it is classified as a prescription form and must comply with the relevant prescription requirements.
Can a PSD be verbal?
No. A PSD must be written. It may be handwritten or electronic and appropriately authorised by the prescriber.
Can a non-prescriber write a PSD?
No. A PSD must be written by an appropriate prescriber.
Can a non-prescribing aesthetic practitioner administer under a PSD?
Potentially. SPS states that a suitably trained and competent person may follow a PSD for administration, although other professional, organisational and governance requirements can apply. The person administering remains accountable for their own practice.
How long does a PSD last?
There is no legally defined validity period for a PSD for administration. The prescriber should specify an appropriate timeframe. Where the PSD is used for supply, prescription-validity legislation applies.
Can a PSD be issued remotely?
Whether the underlying prescribing assessment can be conducted remotely depends on the prescriber’s professional requirements and circumstances. In cosmetic practice, doctors and NMC independent nurse/midwife prescribers are subject to specific face-to-face or physical-assessment requirements.
Can medicine prescribed for one patient be used on another?
Medicine dispensed or supplied to a named individual should only be administered to that named individual.
Can a PSD be used to create botulinum toxin clinic stock?
A patient-specific direction should not be treated as authority to create unrestricted clinic stock. The rules governing POM stock depend on the professional and circumstances.
The Bottom Line
A PSD isn’t simply “the paperwork I need to get toxin.” It represents something much more important.
A patient has been identified. That patient has been assessed. A prescriber has made a clinical decision. A medicine has been authorised for that individual. The person administering it has responsibilities of their own. The administration should be recorded. And the complete journey should be traceable.
That is why the word specific matters. Because when prescription medicines are involved, the patient should never become an afterthought to the product.
Put a Pharmacy Behind Your Clinic
Whether you prescribe yourself or work alongside a prescribing partner, your aesthetic pharmacy is another important part of the patient-specific medicines pathway.
At Longeva Pharma, we work with aesthetic practitioners and prescribers who want professional pharmacy processes alongside responsive, practical service.
Professional pharmacy oversight. Clear communication. Prescription support. Traceability. Accountability. A pharmacy that understands aesthetics.
Practitioners looking for professional toxin supply can browse our Toxins & Diluents collection, subject to the appropriate professional-access and prescription requirements. Greater Manchester clinics can also read about same-day botulinum toxin and diluent supply and collection.
Already working with a prescriber? Register for a Longeva Pharma practitioner account and build a clearer pharmacy pathway behind your clinic.