not sure about its laxative effect but i know victorian "ladies" used it to make tea. they claimed it improved their complexion "so their husband would favour them above any other possession". should try it with my OH, anything to make him put down the xbox controller! SO, laxative effect on you or the tort?!
If my wife started to use it as you've described above, I'd be so worried about what she'd been up to or how much she'd spent on the latest "all i've ever wanted" purchase then it would certainly have that effect on me.