u can get this by phoning raf herbots but it will do u no good what so ever / unless u have swollen win joints;bab droping or bad smell 2them;or birds which are suffering from it ;u treat with a anti biotic for 7 days to clear them up then inject the live or dead vacine but its not a cure your birds your choice.I am aware only healthy birds win in todays racing but there are other ways