A hard Brexit could lead to a shortage of HIV-preventing drugs used for PrEP, experts have warned. PrEP drug Truvada can drastically reduce the risk of being infected with HIV if taken daily, and is recommended for use by at-risk gay and bisexual men. It has seen a swift uptake across the UK, with thousands of men accessing the drug through trials in England and Wales, as well as on the NHS in Scotland and Northern Ireland. However, consultant pharmacist James O’Loan of Doctor 4 U told the Daily Mirror that PrEP drug supplies could be hindered drug shortages if the UK leaves the EU as planned on October 31.