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Assessing the right amount of bromelain to take is complicated. Most bromelain research was conducted years ago, when amounts used were listed in units of activity that no longer exist. These old units do not precisely convert to new ones. Today, bromelain is measured in MCUs (milk clotting units) or GDUs (gelatin dissolving units). One GDU equals approximately 1.5 MCU. Strong products contain at least 2,000 MCU (1,200–1,333 GDU) per gram (1,000 mg). A supplement containing 500 mg labeled “2,000 MCU per gram” would have 1,000 MCU of activity. Some doctors recommend as much as 3,000 MCU taken three times per day for several days, followed by 2,000 MCU three times per day.40 Much of the research uses smaller amounts, more like the equivalent of approximately 500 MCU taken four times per day. However, most of the bromelain used in the studies was enteric-coated in order to prevent it from being destroyed by gastric juice. It is likely, therefore, that currently available bromelain preparations (which typically are not enteric-coated) are of lower potency than the bromelain used in most studies.
Bromelain is found mostly in the stems of pineapples and is available as a dietary supplement.
Since bromelain is not essential, deficiencies of this plant-based enzyme do not exist.
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2016.