
Bromelain is a mixture of enzymes found naturally in the juice and stems of pineapples. Bromelain is present in all parts of the pineapple plant, but the stem is the most common commercial source, presumably because it is readily available after the fruit has been harvested.
Along with papain, bromelain is one of the most popular substances to use for meat tenderizing. Bromelain is sold in a powdered form, which is combined with a marinade or directly sprinkled on the uncooked meat. The enzyme will penetrate the meat, and by a process called forking, cause the meat to be tender and palatable when cooked.
Bromelain can be used in a vast array of medical conditions. It is an anti-inflammatory agent, and so can be used for sports injury, trauma, arthritis, and other kinds of swelling. Its main uses are treatment of athletic injuries, digestive problems, and aiding healing after surgery.
Some of the more common side effects of bromelain include indigestion, nausea and diarrhea. Other side effects may include vomiting, increased heart rate, drowsiness and heavy menstruation.
People with peptic ulcers should not use bromelain. People with other digestive disorders should consult a qualified healthcare professional before using bromelain.