Pharmaceutical The US Food and Drug Administration yesterday (June 18) revealed it is investigating two unexplained deaths in patients who received an intramuscular injection of US drug major Eli Lilly's (NYSE: LLY) antipsychotic drug Zyprexa Relprevv (olanzapine pamoate), a formulation that can last two to four weeks as opposed to daily versions of Zyprexa (olanzapine), which had peak sales of round $5 billion before losing patent protection in 2011, but just $1.7 billion in 2012, compared with less than $60 million last year for the "Relprevv" version. 19 June 2013