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Definition of UL

UL: 1. Upper lid (of the eye). 2. Upper limit. No evidence was found for chronic excess intakes of potassium in apparently health individuals and therefore no UL was established for potassium.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=33656
Last Editorial Review: 6/14/2012

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