retinol equivalent


retinol equivalent
(RE)
   a unit of dosage for retinol (vitamin A) and for related substances such as beta carotene. One RE is equivalent to 5 international units (IU), or 1.5 micrograms, of retinol. U.S. nutritional authorities recommend that an adult diet provide 1000 RE per day.

Dictionary of units of measurement. 2015.