Some senna teas are blended with other herbs, like cascara sagrada or rhubarb, with laxative effects. Senna is usually taken by mouth. It is available as chewable tablets, liquid, powder, or tea.

It turns out that tea made from dandelions may have ... “Almost every bitter herb will have some sort of laxative effect,” he says. “So they use it as kind of a laxative tonic, if you ...