Senna is mainly a laxative. It is taken internally in various forms for indigestion, flatulence, and general gastrointestinal disturbances. And chamomile as tea is often used as a mild bedtime sedative, a soothing relaxant, and as aid to digestion. Chamomile is also applied externally to relieve skin inflammation.
Chamomile is one of the most popular herbal therapies in the world.
A Clinician's Guide to Alternative Therapies , the Physicians' Desk Reference for Herbal Medicines, and other sources. And chamomile creams may provide some relief for skin irritation. Chamomile is not likely do you any harm if taken as recommended. However, it should be avoided by pregnant and lactating women or people with known allergies to plants such as ragweed, asters, and chrysanthemums and other members of the daisy family. For thousands of years we have used herbs for medical and other purposes.