Reclassifying Medicines in the UK: From Prescription to Over-the-Counter

1. Introduction

The legal classification of medicines in the UK determines their supply control, balancing timely access to treatments with minimizing harm from improper use. There are three categories: prescription-only medicine (POM), pharmacy medicine (P), and general sale list (GSL). Reclassification, or 'switching', allows changes based on evidence of safety and efficacy. https://www.gov.uk/guidance/medicines-reclassify-your-product

2. Classifications Explained

2.1 Prescription-Only Medicines (POM)

POMs require a prescription from an authorized health professional and are dispensed under pharmacist supervision. They are for conditions best managed by professionals, such as antibiotics or epilepsy treatments. Packs feature a 'POM' box. https://www.gov.uk/guidance/medicines-reclassify-your-product

2.2 Pharmacy Medicines (P)

P medicines are available only from pharmacies under pharmacist supervision, not on open shelves. They suit short-term or manageable long-term conditions, like emergency contraception or erectile dysfunction treatments. Packs have a 'P' box, and staff provide advice. https://www.gov.uk/guidance/medicines-reclassify-your-product

2.3 General Sale List Medicines (GSL)

GSL medicines can be bought from any retail outlet, including supermarkets, for common, short-lived ailments with few side effects. Packs are small to prevent misuse, e.g., small painkiller packs. https://www.gov.uk/guidance/medicines-reclassify-your-product

2.4 Over-the-Counter (OTC) Medicines

OTC encompasses P and GSL medicines, distinguishing them from POMs. This term is informal in UK regulations. https://www.gov.uk/guidance/medicines-reclassify-your-product

3. Changing Classifications

Reclassification occurs with growing confidence in a medicine's safety. It involves evidence like clinical studies and expert advice to manage public risks. https://www.gov.uk/guidance/medicines-reclassify-your-product

3.1 POM to P Criteria

POM status applies if there's danger without supervision, frequent misuse risk, need for further investigation, or parenteral administration. These are per Human Medicines Regulations 2012, regulation 62(3). https://www.gov.uk/guidance/medicines-reclassify-your-product

3.2 P to GSL Criteria

GSL is for medicines usable with reasonable safety without pharmacist supervision, where hazard is small and wider sale convenient. Per Human Medicines Regulations 2012, regulation 62(5). https://www.gov.uk/guidance/medicines-reclassify-your-product

4. Procedure for Reclassification

4.1 Simple Reclassification

For products analogous to previously reclassified ones (same ingredient, route, etc.), submit as type IB or II variation. Analogous products must have been marketed recently. https://www.gov.uk/guidance/medicines-reclassify-your-product

4.2 Major Reclassification

For new categories or populations, refer to expert committee. Submit product info, clinical overview, and RMP. Use validation checklist. https://www.gov.uk/guidance/medicines-reclassify-your-product

5. Public and Professional Involvement

Stakeholder groups and 21-day public consultations gather views on reclassifications. These inform assessments. https://www.gov.uk/guidance/medicines-reclassify-your-product

6. Additional Resources

Guidance includes MHRA documents, flow diagrams, and webinars. Scientific advice available. https://www.gov.uk/guidance/medicines-reclassify-your-product

7. Publication and Updates

Published 18 December 2014, last updated 27 February 2026. https://www.gov.uk/guidance/medicines-reclassify-your-product