Regulations · 4 min read · Updated 6 November 2026
How to dispose of controlled drugs: UK rules for clinics and care
Why controlled drugs are handled differently
Controlled drugs are medicines covered by the Misuse of Drugs Regulations 2001 because they can be misused. Opioids such as morphine and oxycodone, ketamine and many benzodiazepines fall into this group. The waste rules aim to make sure that, when these drugs are thrown away, nobody can recover them.
Clinics, hospices, care homes, prisons, pharmacies, vets and paramedic services all hold controlled drugs to some degree, and each has slightly different arrangements. The common thread is a clear audit trail from the moment stock becomes waste to the moment it leaves the premises.
Two sets of rules apply at once. Medicines law, under the Misuse of Drugs Regulations, controls who can destroy controlled drugs and how it is recorded. Waste law, enforced by the Environment Agency and its equivalents, controls how the denatured waste is stored, described and collected. A good disposal process satisfies both.
Schedules at a glance
| Schedule | Examples | Disposal |
|---|---|---|
| Schedule 2 | Morphine, oxycodone, fentanyl, methadone | Denature, witnessed destruction for stock, record in register |
| Schedule 3 | Buprenorphine, tramadol, midazolam | Denature before disposal |
| Schedule 4 part 1 | Most benzodiazepines such as diazepam | Denature before disposal |
| Schedule 4 part 2 and 5 | Anabolic steroids, low-strength codeine products | Medicines waste, denaturing good practice |
Always check the current schedule for a specific drug, as drugs are reclassified from time to time.
Gabapentin and pregabalin, for example, were moved into Schedule 3 in 2019, which changed how they must be stored, recorded and disposed of. Keeping your reference list up to date avoids mistakes when similar changes happen.
How denaturing works
A denaturing kit is a container holding a substance that sets into a solid or gel when water is added. Tablets are crushed or put in whole, liquids poured in, and patches folded and added, then the kit is sealed and placed into the medicines waste stream, usually a blue or purple-lidded container depending on contents.
- Use a proper denaturing kit, not just sharps bins or bags
- Wear gloves and work in a well-ventilated area
- Add water as instructed and allow the contents to set
- Seal the kit and label it
- Place it in the correct medicines waste container
- Record the destruction
Who can do what
| Setting | Usual route |
|---|---|
| Community pharmacy | Denature on site under a T28 exemption, witnessed where required |
| Veterinary practice | Denature on site under a T28 exemption |
| GP practice and private clinic | Denature with witness, or return to supplier, check local guidance |
| Care home with nursing | Usually returned to a pharmacy or collected by a specialist contractor |
| Care home without nursing | Return to the supplying pharmacy |
| Patient's own drugs at home | Return to a community pharmacy |
The T28 exemption in brief
In England, the T28 exemption allows pharmacies and vets to sort and denature controlled drugs for disposal. It is free to register with the Environment Agency and lasts three years. Storage is limited to one cubic metre of waste controlled drugs at a time, for up to six months, and the waste must be produced at that site. Exemption rules are expected to change from January 2027, so check the current guidance.
Records and audit trail
- Record each destruction in the controlled drugs register, with date, drug, strength, quantity and witness
- Keep records for at least two years, or longer if your organisation requires
- Keep your T28 registration details on file
- Match denatured waste to your medicines waste collections and consignment notes
- Report discrepancies to your controlled drugs accountable officer
Common mistakes with controlled drug waste
Most problems arise not from deliberate misuse but from busy staff taking shortcuts. A few habits cause the majority of issues found at inspection.
- Putting part-used ampoules of controlled drugs into sharps bins without denaturing
- Throwing unused patches into general or offensive waste
- Letting expired stock build up because nobody is free to witness destruction
- Recording destruction without a second signature
- Storing denaturing kits that are full but unsealed
- Not separating patient returns from the organisation's own stock
Booking regular destruction sessions with an authorised witness, rather than waiting until the CD cabinet is full, keeps stock levels low and records tidy. Small quantities of liquid left in a syringe after a dose should be expelled into a denaturing kit, not a sharps bin, where local policy requires it.
Frequently asked questions
Who can witness the destruction of controlled drugs?
For Schedule 2 stock, destruction must be witnessed by an authorised person, such as someone appointed by the controlled drugs accountable officer or a police officer with the right authority. Patient-returned controlled drugs do not need an authorised witness in the same way, but good practice is for a second member of staff to witness and sign the record.
Can care homes destroy controlled drugs themselves?
Care homes without nursing should normally return unwanted controlled drugs to the supplying pharmacy rather than destroy them. Care homes with nursing may have different arrangements and sometimes use a specialist contractor, but they should follow their local integrated care board guidance and their own medicines policy. Keep clear records of anything returned.
Do controlled drug patches need denaturing?
Yes. Used and unused patches containing drugs such as fentanyl or buprenorphine can still contain significant amounts of drug. Used patches should be folded in half with the sticky sides together, and then denatured or disposed of according to your local policy. Never put them in general waste where they could be found. Patients at home should return unused patches to a pharmacy.
controlled drugs denaturing T28 medicines disposal
