Ask Erowid

Ask a Question

Find an answer:

View By Category

Search Ask Erowid
Search Vaults

Enter a keyword in the search field above to look up a question or answer on a specific topic.

Off-Site Psychoactive Question Resources
  Ask Dr Shulgin

Resources at Erowid
  Plants & Drugs
  Freedom & Law
  Mind & Spirit
  Arts & Sciences
  Library / Bookstore
  What's New
  About Erowid
Q: White, oval tablets, 1 side has an "M" with a square around it, The other side has the numbers "1721". There is no listing @ poison control or rxlist. Do you have any idea what they may be?

A: According to the Ident-a-drug Referenence, a white oval tablet with an "M" on one side and "1721" on the other contains 100 mg Propoxyphene Napsylate and 650 mg Acetaminophen.

Propoxyphene Napsylate is a synthetic opioid used in the relief of pain. It is in schedule IV in the United States, making it illegal to buy, sell, or possess without a prescription.

Asked By : unknown
Answered By : fire
Published Date : 10 / 27 / 2002
Last Edited Date : 3 / 12 / 2004
Question ID : 3003

Categories: [ Pharmaceutical ID ]

Ask Erowid v1.7 - Jul, 2005

(content and html © the Vaults of Erowid. Please ask permission before publicly reproducing.)