Gentle Overnight Relief Certified Gluten-Free Lab Tested - Non-GMO Premium Dietary Fiber Supplement For Short-Term Use to Restore Regularity Includes Soothing Digestive Herbs Fiber Plus Senna - Take as needed to restore regularity. Fiber Plus Senna also provides a quick, thorough cleansing of the colon when needed. Fiber Plus Senna contains all the benefits of fiber in addition to the colon cleansing benefits of senna to help restore healthy bowel function.