Vikings' receiver Bernard Berrian says that sometimes there's nobody at the other end of the line on the NFL's hotline for players if they want to find out if supplements contain ingredients banned by the league. Berrian said in an interview on Sirius satellite radio that he has tried twice to call the hotline and never got a call back before getting a reply on his third attempt. "You've got to take some responsibility and call into that hotline [to inquire about the legality of certain products]," Berrian said. "But I know one thing about that hotline. I've called twice before and actually never gotten a hold of anybody sometimes. So even when you try to do the right thing, sometimes it is still hard to get a hold of somebody and really find out what you're really taking." NFL spokesman Greg Aiello said in an e-mail to the Minneapolis Star-Tribune that the league would "follow up" on Berrian's comments to make sure the hotline is operating properly.