Aquamira Chlorine Dioxide drops have a shelf life of 4 years after production and the tablets have a shelf life of 5 years.

The tablets expire 5 years after production and should be discarded after expiration.  Each tablet has an expiration date stamped on the backside of the foil wrap, but is sometimes difficult to read.  Example: on the left border it shows “EXP 02 20” meaning it expires after February 2020.