First, medication contraindications: physical weakness and pregnant women should not take it, and those with moderate cold diarrhea should not use it.

Second, matters needing attention:

1.The laxative effect of Senna leaves varies from person to person. Some people take10g, which has no laxative effect and no adverse reaction. However, if someone takes10g, it will cause massive gastrointestinal bleeding, which is manifested as abdominal pain and black stool. Therefore, the conventional dosage should also be tried in small doses first and gradually increased. Excessive dosage can cause nausea, vomiting, abdominal pain, diarrhea, dizziness, walking instability, facial numbness and so on. Generally, it should not be greater than 2g for laxative and 6g for severe diarrhea.

2. The medicine does not prove that Senna leaves are cold, and diarrhea can hurt healthy qi at the same time, so it is not suitable for those who are physically deficient and have constipation for a long time. Clinically, it can be seen that some elderly patients take senna leaves to induce diarrhea for a long time. Although the abdominal qi is unobstructed for a while, it is not a cure, and it will aggravate the damage of qi and yin deficiency, which is not conducive to fundamentally solving constipation symptoms. At this time, Cistanche deserticola, Cynomorium songaricum, Hemp Seed, Rehmannia glutinosa and other products for tonifying kidney, nourishing yin and moistening the lower body should be prepared, and a small amount of senna leaves should be used to slow down and gradually reduce senna leaves.

3. Women are contraindicated during lactation, menstrual period and pregnant women. Excessive dosage has side effects such as nausea, vomiting and abdominal pain.