You can help find a treatment for COVID-19

Anyone experiencing COVID-19 symptoms, which started within the last 14 days, may be eligible to join the PRINCIPLE trial if they are aged over 65; or over 18 with an underlying health condition.

PRINCIPLE is a nationwide clinical study from the University of Oxford to find COVID-19 treatments for recovery at home.

PRINCIPLE is recruiting participants through its website – – and through GP practices across the UK.

PRINCIPLE is still open to those who have received a COVID-19 vaccine.

PRINCIPLE Patient recruitment poster (PDF)