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Sarcina (genus) Sarcina is a genus of Gram-positive cocci bacteria in the family Clostridiaceae. A synthesizer of microbial cellulose, various members of the genus are human flora and may be found in the skin and large intestine.
Cascara sagrada is a natural laxative made from the reddish-brown bark of a tree (Rhamnus purshiana) native to the Pacific Northwest. It was used by various Native American tribes, who also passed their âsacred barkâ on to Spanish explorers (cascara sagrada means sacred bark in Spanish).ong-term use of any laxative, including cascara sagrada, can lead to a potassium deficiency. A low potassium level in the body can potentiate (increase) the effect of digitalis drugs and cause dangerous heart beat irregularities.