 Consuming Coprinopsis atramentaria within a few hours of alcohol results in a " disulfiram syndrome " . This interaction has only been known since the early part of the twentieth century . Symptoms include facial reddening , nausea , vomiting , malaise , agitation , palpitations and tingling in limbs , and arise five to ten minutes after consumption of alcohol . If no more alcohol is consumed , they will generally subside over two or three hours . Symptom severity is proportional to the amount of alcohol consumed , becoming evident when blood alcohol concentration reaches 5 mg / dL , and prominent at concentrations of 50 – 100 mg / dL . <unk> has , however , been known to cause myocardial infarction ( heart attack ) . The symptoms can occur if even a small amount of alcohol is consumed up to three days after eating the mushrooms , although they are milder as more time passes . Rarely , a cardiac arrhythmia , such as atrial fibrillation on top of <unk> tachycardia , may develop . 
