Kyowa Kirin are the sole supplier of phenelzine tablets in the UK. They are out of stock due to manufacturing issues. Phenelzine tends to only be used in difficult to treat patients and many of these have been stabilised on this treatment for a long time. Given the difficulties in withdrawing treatment and initiating new treatments in patients stabilized on phenelzine it would seem advisable to maintain them on this treatment using unlicensed imports should they run out of supply. If there is potential for a patient maintained on phenelzine to run out of supply during this shortage, they should be urgently referred back to mental health specialist for advice on ongoing clinical management.