We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Change your protocol, update your authorisation, report safety issues, submit safety updates and complete your end-of-trial study report.
Guidance on the collection, verification, and reporting of safety events in clinical trials of an investigational medicinal product.
Safety leaflet on topical corticosteroids and withdrawal reactions to help patients and their carers to use these medicines safely.
How marketing authorisation holders should inform MHRA of a signal or an ADR to a medicine.
How to apply for a clinical trial including eligibility, phases, model IMPDs, costs and how to make changes to your application.
The characteristics, symptoms, diagnosis and treatment of alpha-gal syndrome.
Guidance for people with symptoms of a respiratory infection including COVID-19, or a positive test result for COVID-19.
Urgent and clinically significant safety updates arising from pharmacovigilance data, including reported adverse events, for veterinary medicines authorised in the UK.
Indoor airborne allergens are particles present in indoor environments that can trigger allergic reactions or exacerbate respiratory conditions such as asthma.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).