Yes, the tea says the same thing. In fact, I have serious doubts about using laxatives that way at all, in any circumstances, though I recognize the necessity of bowel evacuation... it's a connundrum.
I wouldn't take capsules because they are solid; anything solid, your body has to turn to liquid, and the point of being off solid food is to spare your body that burden. Perhaps dissolve them in hot water? I don't know; open them onto a coffee filter and pour boiling water through like you're making coffee, then drink the water. That's what I would do. Yes, that's officially my answer.