Ref: Whitney Houston

Openly thinking in this case: Why are the authorities subpoenaeing the Doctors who prescribed her medication and the pharmicies that dispensed them? This case is not like Michael Jackson's at all. If, in fact, Zanax and alcohol combination contributed to her death are they also going to subpoenae whoever sold her the liquor? After all, PRESCRIBED medication and alcohol are BOTH legal, right? I would also imagine that there was an alcohol warning on the prescription bottle.