Re: Lidocaine Enemas. I am warning everyone to be careful. My brother just died 3/31/12 from a lidocaine enema. He was only 28. (Lidocaine Intoxication) Lidocaine in liquid form. I don't want anyone elses loved ones to die like this. I hope everyone will be careful when dealing w/lidocaine. it is a dangerous substance when not used properly.