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Foods Containing Tannic Acid

Published Jul,08 2011 | By Robert Shifko

Tannic acid, or tannin, is a bitter tasting substance called polyphenol that is derived from plants. This compound acts as an astringent when consumed or applied topically, which means it shrinks or constricts the body tissues.

Robert Shifko has more than 17 years' experience in the health care industry. Throughout his career, he has gained experience in pharmacologic research, clinical nuclear medicine, and most recently radiation health physics. He has obtained several certifications in nuclear medicine, epidemiology, biostatistics and as a medical radiation safety officer. He has always supported LIVESTRONG.