Compositions for improved delivery of plant-derived cathartics are disclosed. In one aspect, the compositions comprise a plant-derived cathartic and an effervescence coupling system that, when dissolved into an aqueous medium such as water, produce an effervescent liquid cathartic composition. In another aspect, the compositions comprise a solid dosage form that dissolves or disperses in an aqueous medium to produce a liquid composition that is administered to an individual. The liquid compositions are not only more appealing to a consumer, but also improve the amount and bioavailability of active cathartic components. The cathartic composition is administered to an individual alone or in combination with one or more agents that promote additional laxation, digestion or gastrointestinal health, and/or improve the effectiveness of the plant-derived cathartic composition.
