Traditional Use

Senna has been used as traditional medicine by ancient cultures all over the world for millennia. Senna is an Arabian name and 9th-century writings describe how it was used extensively by Arabian physicians. According to a rare Egyptian medical papyrus, dating to the 16th century BCE, Senna was prescribed by the physicians for their distinguished patients.
In North America, native tribes used the seeds (pods) as a mucilaginous medicine for sore throat. The Cherokees used the bruised root, moistened with water, for dressing sores. They also used it in a tea to cure fevers with black spots and paralysis as symptoms.

Senna Benefits

Constipation

The most famous use of this herb is as a laxative and a purgative. It is now known that the laxative effects of Senna are due to anthraquinone glycosides known as sennosides. These compounds stimulate intestinal contractions that lead to the rapid expulsion of waste matter.
Senna may also be able to soften the stool by assisting the large intestine to absorb more water and adding bulk to faeces. This allows for bowel movements that are quick and smooth as waste passes through the large intestine.
Colon Cleanse
Senna is often used to clear the bowel before diagnostic tests such as colonoscopies. Cleansing the colon is believed to improve nutrient uptake and support overall colon health.
Anti-Parasitic
Senna also works as an effective vermifuge to destroy parasites and expel worms from the intestinal tract. It works best when combined with other anthelmintic herbs (used in the treatment of roundworm), such as ginger or fennel. These herbs increase regularity and reduce the chance of bowel cramps due to Senna’s strong action.
Digestive Health

In the case of indigestion, Senna contains natural enzymes that help to restore gastric juice secretions in the stomach.  Senna, if used in the proper dosage for certain periods of time, has shown potential in reducing irritability in the intestines by improving overall digestion.
Senna also contains the anti-inflammatory compound resveratrol which can help to soothe inflammation in the gastrointestinal tract.
Skin Health
Senna leaves contain essential oils and tannins that help to alleviate skin inflammation. With a strong antibacterial activity, they can be made into a compress which can be applied to wounds and burns.
Acetone and ethanol - other compounds present in Senna - can fight the microorganisms that cause acne. Senna also helps to reduce sebum production and increase cell regeneration and collagen production.

Please consult with a professional before use, For further information please click the link

https://www.nhs.uk/medicines/senna/