Method of making and taking tea: 1 teaspoon of leaves is poured with 1 cup (200 ml) boiling water, heated over low heat for 5 minutes, cooled, filtered. It is recommended to drink tea in the evening to ensure the release of the intestines after 6-8 hours. The active ingredients are compounds called anthraquinones, which are powerful laxatives. Senna tea is also used by some for other indications, including weight loss. Most scientific studies investigating the health benefits of senna focus on its potential for use in the treatment of constipation and other gastrointestinal disorders. Do not take senna tea if you have: Crohn's disease, ulcerative colitis, appendicitis, diarrhea, dehydration, abdominal pain, a condition that causes intestinal obstruction, senna allergy. If you have any type of heart, liver, or kidney condition, it's crucial that you consult your doctor before using senna.