Drinking senna to improve constipation symptoms, usually 15 minutes to half an hour after drinking will have an effect, but for people with frequent constipation, it is not recommended to often take senna to improve constipation symptoms, often take senna may cause gastrointestinal dysfunction, and lead to gastrointestinal independent defecation ability, gastrointestinal peristaltic function decline, but over time may lead to constipation symptoms aggravated. Therefore, for people with constipation, it is recommended to increase exercise, adjust the diet structure, abdominal massage and reasonable use of laxative drugs to improve the constipation. If the effect of laxative drugs alone, such as Marenzhi Spleen Pill and Marenzhi Intestinal Pill, is not good, you can use senna leaf and fruit guide tablets to temporarily improve the situation if necessary.