I picked up a refill of my Novolog and Lantus insulin pens in the evening after work the other day. I forgot to put them into the refrigerator when I got home and they were left out overnight. I put then in the refrigerator the next day. Will they go bad after 28 days? Or will they be OK to use for awhile?

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May 16, 2013 at 4:19 pm Tags: insulin