Senna has a laxative effect in that it stimulates peristalsis which propells the contents of the alimentary canal forward. At the same time, it counteracts absorption of liquid from the intestine. This makes the stool softer.
Normally the plant’s pods are used but the senna leaves can also be used, though they have a milder effect than the pods.
The flavour is slightly bitter and disagreeable to some people. It is important to the liver stimulating effect. This effect can be expected about 10 hours after intake. For other purposes, senna can be combined with honey or other herbs like ginger.
Warning
Too large doses may cause colic. Use it for a maximum of one week at a time, since prolonged use may weaken the intestinal muscles.
Must not be used by pregnant or breastfeeding women, since substances are transferred into the foetus and the mother's milk.
See e.g. "Senna - Tinnevelly - Cassia Complex".
