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2 replies
Joined: Jan 23 2007
Posts: 2
User offline. Last seen 1 year 44 weeks ago.

Pill has an M with a box around it on one side and other side is 57/71

Any idea? I think its a painkiller...asked for tylenol from friend handed me this...glad i looked at it...

Help!!

Joined: Jan 23 2007
Posts: 2
User offline. Last seen 1 year 44 weeks ago.
sorry to clutter forum..got

sorry to clutter forum..got it..its methadone hydrochloride..in case anyone else needs to know..

Joined: Mar 20 2006
Posts: 2184
User offline. Last seen 5 weeks 12 hours ago.
M 5771 is 10mg methadone.a

M 5771 is 10mg methadone.

a very strong opioid painkiller. far different from tylenol.


all thoughts and opinions expressed are those of my own and should not be mistaken for medical advice. i am not a doctor nor a pharmacist. all medical questions should be answered by a licensed pharmacist, doctor, or primary care manager.