Listening to Prozac?

Here's a strange explanation for a bizzarre case: 

Mark W. Benoit sat on the couch Thursday morning in the apartment he shared with his wife, Cynthia, and their 9-year-old daughter, Sarah Ann, and was watching television when he "snapped," he told investigators.

After "snapping," he choked the two of them to death. Why did he do it?

Depression had been building since he could not refill his Prozac prescription...the 42-year-old told State Police.

I'm curious why he couldn't refill his prescription. Did he lack the money to pay for it? Had he run out of refills and not have a doctor to renew it? In any case, it seems like a weak excuse.