A Los Angeles pharmacist told reality TV star Anna Nicole Smith's internist that the drugs the internist prescribed to the model after her son died were "pharmaceutical suicide," according to unsealed documents written by state officials.

Smith's doctors were warned about prescription drugs by three pharmacists, according to unsealed affidavits obtained Monday by the Los Angeles Times.

The pharmacist refused to fill the prescriptions and later recalled thinking, "They are going to kill her with this."

The documents are part of an investigation of the role that Smith's doctors, psychiatrist Khristine Eroshevich and internist Sandeep Kapoor, had in her overdose death in February 2007.

The physicians and Smith's boyfriend and attorney Howard K. Stern pleaded not guilty May 13 to conspiring to illegally provide her with controlled substances. A preliminary hearing is scheduled for next month.

In court papers filed last week, prosecutors said they plan to call the model's bodyguard and Larry Birkhead, the father of her daughter, Dannielynn, as witnesses.

The documents also cite evidence that both physicians crossed professional boundaries by having sexual contact with their famous patient. Calls to attorneys representing Eroshevich and Kapoor were not immediately returned Monday.

The first request for drugs for the former Playboy Playmate came five days after her son died and asked for two sedatives, 300 tablets of methadone, a muscle relaxer, an anti-inflammatory drug and four bottles of a strong painkiller.