A member asked:

Which narcotics do not cause miosis?

4 doctors weighed in across 2 answers

Demerol (meperidine hydrochloride): Demerol (meperidine hydrochloride) chemically looks like Atropine and therefore has some Atropine like effects like miosis.

Answered 6/25/2014

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Dr. Mark Newman answered

Specializes in Anesthesiology

Miosis: All true opioids will cause miosis to some degree dependent on doses given.

Answered 4/4/2013

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