It's a round blue pill with G 64 on one side and a break on the other side
30 Jun 2012
Is it possible the imprint could read E 64 instead of G 64?
E 64 matches your description and the E could easily be misread as a G.
Pill imprint E 64 has been identified as Clonazepam 1 mg, which is a generic version of Klonopin - used to treat a variety of conditions including anxiety, bipolar disorder, panic disorder and seizures.
You can take a look at the image at http://www.drugs.com/imprints/e-64-10355.html to see if it matches up.
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