It has a sort of rounded E symbol like this ,€, but with just one horizontal line and then 51. So basically € 51. It's white, round and had a score mark on the back. Hope someone can help!
Pill imprint E51 has been identified as Meperidine Hydrochloride 100 mg, which is a generic version of Demerol.
It is a narcotic analgesic for the treatment of pain.
Description: Meperidine Hydrochloride Tablets USP, 100 mg white, round biconvex tablets, debossed “Є51” on one side and bisected on the other side.
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