BBC Sport has been told Mykhailo Mudryk was banned by the FA in January but that only a close-knit group of people around him and a small number of people at Chelsea were informed. The exact prohibited substance for which Mudryk tested positive has never been named by the FA, but BBC Sport understands it is the cardiovascular medication meldonium, which has the potential to increase respiratory capacity and stamina, which he came into contact with while on duty with the Ukraine national team. It remains unclear how exactly Mudryk apparently ingested meldonium, which has been banned by Wada since 2016 and is primarily used in Eastern European countries to treat conditions such as angina, heart failure and coronary artery disease.
