Controlled drugs (CDs) form a significant part of community pharmacy's daily workload. From morphine and fentanyl patches to gabapentin and tramadol, the Misuse of Drugs Act 1971 and its associated regulations impose specific requirements on how these medicines are received, stored, dispensed, and destroyed. Getting the detail right is not optional — it is a legal obligation, and CD compliance is a core focus of GPhC inspections.

The schedule system

The Misuse of Drugs Regulations 2001 classify controlled drugs into five schedules, each with different requirements:

*Tramadol was reclassified from POM to Schedule 3 CD in June 2014. **Phenobarbital and some other Schedule 3 drugs require entry into the CD register in specific circumstances — check current NICE guidance.*

The CD register

For Schedule 2 drugs, the community pharmacy must maintain a controlled drug register. This is a legal record of every receipt and supply. The requirements are precise:

• Bound register: the register must be in a bound book (not loose-leaf) or an approved electronic system
• Separate page per drug: each Schedule 2 drug must have its own page(s), recording form and strength
• Entries within 24 hours: all entries must be made on the day of the transaction or, at latest, the following day
• No alterations: errors must be annotated with a dated footnote, not overwritten or crossed out
• Running balance: a running balance should be maintained and checked regularly against physical stock

The register entry for a supply (dispensing) must include:

1. Date of supply
2. Name and address of the patient
3. Prescriber's name and address
4. Quantity supplied
5. Form and strength of the drug

For receipts, the entry must include the date, name and address of the supplier, and quantity received.

Safe custody

Schedule 2 and most Schedule 3 controlled drugs must be stored in a controlled drugs cabinet that meets the requirements of the Safe Custody Regulations 1973. In practice, this means:

• A locked cabinet constructed to BS 2881:1989 or equivalent (steel body, multi-point locking mechanism)
• Fixed to a wall or floor
• Key held by the responsible pharmacist or a designated keyholder
• Access limited to authorised personnel
• Cabinet located in the dispensary, not accessible to the public

The responsible pharmacist on duty is personally accountable for CD cabinet access. When the pharmacy closes, the cabinet must be locked and the key secured.

Prescription requirements

CD prescriptions carry additional requirements beyond standard prescriptions:

A prescription that does not meet these requirements is technically non-compliant, and the pharmacist faces a professional judgement about whether to dispense. In practice, pharmacists routinely contact prescribers to resolve minor omissions — but the 28-day validity rule is strict. A Schedule 2 prescription presented on day 29 cannot legally be dispensed.

Destruction of controlled drugs

Patient-returned CDs and expired stock must be destroyed — not simply disposed of in pharmaceutical waste. The destruction process for Schedule 2 drugs must be:

• Witnessed: by an authorised person. Since 2006, this is typically a pharmacy inspector, a police officer, or — in some areas — an NHS England CD accountable officer or their delegate
• Recorded: in the CD register, noting the date, quantity destroyed, and witness name
• Denaturing: the drugs must be rendered irretrievable, typically using a CD denaturing kit (enzyme-based destruction systems approved by the Environment Agency)

For Schedule 3, 4, and 5 drugs, witnessed destruction is not legally required, but many pharmacies follow the same procedure as a matter of good practice.

Responsible pharmacist obligations

Under the Medicines Act 1968 and the Responsible Pharmacist Regulations 2008, the responsible pharmacist on duty bears personal responsibility for CD compliance within the pharmacy. This includes:

• Ensuring the CD register is up to date
• Checking that the CD cabinet is secure and that stock tallies with register entries
• Authorising any CD supply
• Reporting any discrepancy to the NHS England CD accountable officer for the local area

CD discrepancies — where the physical stock count does not match the register — are among the most serious findings in a GPhC inspection. Pharmacists should conduct regular stock checks (the GPhC recommends at least weekly for high-turnover Schedule 2 drugs) and investigate any discrepancy immediately.

Record retention

CD registers must be retained for at least two years from the date of the last entry. Many pharmacies retain them for longer as a matter of policy. The register should be stored securely — it contains patient-identifiable information and is subject to GDPR as well as CD legislation.

Common pitfalls

• Forgetting the running balance: technically not a legal requirement in all circumstances, but the GPhC and NICE both recommend it, and inspectors will note its absence
• Overwriting CD register errors: draw a line through the error, add a footnote with date and initials. Never use correction fluid
• Accepting out-of-date CD prescriptions: the 28-day rule is absolute for Schedule 2
• Failing to report discrepancies: even small discrepancies must be investigated and, if unresolved, reported to the local CD accountable officer
• Inadequate destruction records: every destruction must be documented, with the witness named

Further resources

• Browse pharmacy roles with controlled drug responsibilities on PharmSee Jobs
• Compare pharmacist salary data across different pharmacy settings
• Find registered pharmacies in your area on the pharmacy finder

Sources: Misuse of Drugs Act 1971 (legislation.gov.uk); Misuse of Drugs Regulations 2001 (legislation.gov.uk); Safe Custody Regulations 1973; NICE Medicines Practice Guideline on Controlled Drugs; GPhC inspection standards; Responsible Pharmacist Regulations 2008.