Senna leaves should be avoided in pregnancy as it directly affects the gut health. People who are taking blood-thinning medicines should avoid consuming senna tea.(2)
(1,2) https://cashkaro.com/blog/senna-leaf-benefits-uses-how-to-consume-side-effects/52141
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Description
Senna leaves are the leaves of a herb that is sued to make tea. The senna plant is commonly found in hot and dry regions of Africa and Asia. Its stem grows to a height of one to two metres and it has pinnate leaves and yellow flowers. The fruits grow in husks that are around five centimetres in length. Senna is most often used as a laxative, either to relieve constipation or in some cases, to help with weight loss. Senna is available as a tea, a liquid, a powder, or tablets. Senna tea is most commonly used for occasional constipation. Researchers have found that the active compounds in senna have a strong laxative effect.