However, Larry Birkhead acknowledged the celebrity model had an array of ailments, ranging from back pain to seizures, and each one required specific medication.
A defense lawyer led Birkhead on Friday through descriptions of the illnesses to suggest Smith was being properly medicated by her doctors.
"I was concerned that Anna was taking too many medications," said Birkhead, a photographer who moved in with Smith in 2004 after a romance that began at a Kentucky Derby party.
He said he raised the drug issue during a visit to Dr. Sandeep Kapoor in mid-2005 about a minor ailment. Kapoor was Smith's physician at the time.
"At the end of the visit, I said to him she might be taking medicine from someone else in addition to him," Birkhead testified.
"What did Dr. Kapoor say?" prosecutor Renee Rose asked.
"He said, 'I believe we have that under control now,' and that's all that he said," Birkhead replied.
Kapoor, Howard K. Stern, Smith's boyfriend-lawyer and Dr. Khristine Eroshevich are charged with conspiring to illegally provide controlled substances to Smith. All three have pleaded not guilty.
The defendants are not charged with Smith's death at a Florida hotel in February 2007, which was ruled an accidental overdose.
Birkhead took the stand at a preliminary hearing to determine if the defendants should stand trial. The hearing recessed until Monday with Birkhead still testifying.
During cross-examination by attorney Steve Sadow, who represents Stern, Birkhead provided a rundown of Smith's physical problems that included back pain from having breast implants, swelling of her hands, restless leg syndrome and intense headaches including migraines.
She was once hospitalized for a dislocated shoulder after falling out of bed and was plagued by pain after that, Birkhead said, adding she also had a miscarriage before he met her.
"It seems I'm missing something," he said as he recited her ailments. "There were so many of them."
Birkhead said he witnessed 10 to 20 seizures by Smith, with one coming the night before she was to appear on the American Music Awards. She managed to do the show by taking two anti-seizure drugs and downing three high-energy drinks but consuming nothing else, he said.
Superior Court Judge Robert J. Perry asked to view again a video of that appearance to see if Birkhead thought she looked normal or was "loaded on something."
Birkhead said she was nervous, but most of her behavior was typical of her high-energy public appearances.
Asked to describe his relationship with Stern, Birkhead replied: "Icy."
"We clashed a lot. He would get into the personal relationship between Anna and me," Birkhead said. "I don't think he was happy that I was there."
