Does diprivan have fatal side effects?

It's possible: Diprivan (propofol) is a medication used for sedation or general anesthesia. It is very safe when monitored by an anesthesiologist who is trained to manage the effects on blood pressure and breathing. If improperly used or not monitored safely, Propofol can make a person stop breathing completely, which can be fatal.

See below: If used by someone unskilled in the management of anesthesia and unable to maintain a patent airway...Then yes.

Yes: Propofol was implicated in the death of the king of pop.