For example, the old BAN methicillin was replaced with the current BAN meticillin, matching the INN.

This has resulted in an interesting situation in other countries that use BANs. While the British Pharmacopoeia and BANs are the official pharmacopoeia/names defined by legislation in many of these countries, the former BANs often continue to be used, purportedly because of the difficulty of changeover. Despite the importance of the BP, there appears to be little or no movement in the direction of changing