It affects the nervous system, causing pleasant experiences that can be compared to the effects of taking hard drugs: cocaine, amphetamine, or morphine. The dose taken is important, although, regardless of the size, it always leads to addiction. When lethal doses are used (LD50 is approximately 1-1.5 mg/kg body weight), death may occur within a few minutes as a result of suffocation, because neurotoxins cause acute paralysis of the respiratory muscles.