Basically what the title says. I read somewhere that you can only change back into a werewolf once, but I've also read that you can alternate as much as you want because Bethesda didn't want to limit the player.

Man if you have spoilers put the spoiler button or just put this topic in the spoiler section.

I simply edited the OP. I'm on my iPod so I can't really add spoiler tags or anything.