The toxicity of Bromo-DragonFLY is unknown for humans however at least three reports of death believed to be resulted from Bromo-DragonFLY have been reported in Norway[4], Sweden[5] and Denmark[6][7]
Also, a Swedish man had to have the front part of his feet and several fingers on one hand amputated after taking a massive overdose. Apparently the compound acted as a long-acting efficacious vasoconstrictor, leading to necrosis and gangrene which was delayed by several weeks after the overdose occurred. Several other cases have also been reported of severe peripheral vasoconstriction following overdose with Bromo-DragonFLY, and a similar case is also known from DOB. Treatment was of limited efficacy in this case although tolazoline is reportedly an effective treatment where available.[8][9]
Overdoses, disturbing experiences, and Bromo-DragonFLY associated health problems have been described. One case in 2008 in England involved inhalation of vomit, causing nearly fatal asphyxia.[10]