Official sources library
Every official UK source GLP Index cites on its rules pages, in one list. 17 sources from 7 bodies, each checked on 8 October 2026.
Compiled by GLP IndexSources checked Official UK sources only. Not medical advice
GLP Index cites the MHRA, NICE, the NHS, NHS England, the GPhC, the ASA and the House of Commons Library. We link to the original page for every rule and add no opinion of our own.
Medicines and Healthcare products Regulatory Agency
- GLP-1 medicines for weight loss and diabetes: what you need to know. First published 5 June 2025, updated 5 February 2026.
- Drug Safety Update: strengthened warnings on acute pancreatitis. 29 January 2026.
- UK first in Europe to authorise orforglipron for weight management and type 2 diabetes. 10 August 2026.
- Yellow Card scheme: report a side effect or a fake medicine. Live service.
National Institute for Health and Care Excellence
- Tirzepatide for managing overweight and obesity (TA1026). Published December 2024.
- Semaglutide for managing overweight and obesity (TA875). Published March 2023.
NHS England
- Weight management injections. Checked 8 October 2026.
- Interim commissioning guidance: NICE TA1026 tirzepatide. Reviewed April 2026.
NHS
- Semaglutide: a medicine to manage type 2 diabetes or treat obesity. Checked 8 October 2026.
General Pharmaceutical Council
- Providing weight management services: FAQs. Checked 8 October 2026.
- Guidance for registered pharmacies providing pharmacy services at a distance, including on the internet. February 2025.
- Weight management medicines and services: a review of GPhC inspections and concerns. April 2026.
- GPhC joins forces with other regulators over advertising of weight management medicines. 11 April 2025, updated 25 February 2026.
- GPhC registers. Live register.
- Buying medicines safely online. Checked 8 October 2026.
Advertising Standards Authority, MHRA and GPhC
- Enforcement notice: advertising of prescription-only medicines used for weight management. 23 September 2025.
House of Commons Library
- Weight loss medicines in England (CBP-10171). 10 April 2025.
How we use sources
- We cite regulators and the NHS first. We do not cite pharmacies or manufacturers for a rule.
- We give the date each source was published or checked.
- We review the rules pages when a regulator publishes a new decision.