Magnesium sulfate
Magnesium sulfate has been proposed as a treatment for Irukandji syndrome after being apparently successfully used in one case. Early evidence suggested a benefit; however, according to a later report, a series of three patients failed to show any improvement with magnesium; the author emphasized the experimental status of this treatment. Some preliminary laboratory experiments using the venom extracted from "Malo maxima" (the 'Broome Irukandji') on rat cardiovascular tissue "in vitro" has suggested that magnesium does in fact block many of the actions of this venom.