Prunelax is an Effective yet Gentle Natural Laxative, recommended for people who suffer from occasional irregularity*. - Based on the laxative properties of prunes and senna, Prunelax has become one of the top selling brands in 17 countries around the world. - Prunelax 100% Natural and Effective Laxative helps you mantain bowel regularity*, taking effect within 8 to 12 hours. - Prunelax dietary supplement contains 30 mg of Sennosides per teaspoon (0.53 oz).