A member asked:

Taken 1 mucinex dm once per 12 hr for the last 48 hours. since then, i have had ed. in bed with my wife, this evening i experienced a sensation similar to when i briefly took paxil- a funny, almost painful feeling in the upper left of my neck. ???

A doctor has provided 1 answer

DM (in Mucinex DM or similar products) is dextromethorphan. It can cause ED and ejaculation problems but also painful muscle spasms. it also has a lot of interactions with many other medications.

Answered 8/31/2021

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