Get long-lasting sinus pressure and chest congestion relief. Mucinex® D packs the power – for 12 hours – to unstuff your nose and break up excess mucus. Learn about Benzonatate (Benzonatate Softgels) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. RATING: REASON: SIDE EFFECTS FOR MUCINEX: COMMENTS: SEX: AGE: DURATION/ DOSAGE: DATE ADDED F M : 5: chest cold: None that I know of. Only had the expected therapeutic. Show all medications in the database that may interact with Mucinex DM (dextromethorphan / guaifenesin). Check for interactions with Mucinex DM (dextromethorphan. Find patient medical information for Mucinex D oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Mucinex ® D and Maximum Strength Mucinex ® D contain the active ingredient pseudoephedrine (PSE), which is a nasal decongestant that relieves sinus pressure and. Show more Information. If you select "Keep me signed in on this computer", you can stay signed in to WebMD.com on this computer for up to 2 weeks or until you sign out. Surprising Health Benefits of Sex. How would you like a stronger immune system or better sleep? Action between the sheets can help you get all of this and more. 2 Answers - Posted in: mucinex, mucinex dm, sudafed, nasal congestion - Answer: Yes, it's fine to take Mucinex DM (dextromethorphan and guaifenesin). Surprising Health Benefits of Sex. How would you like a stronger immune system or better sleep? Action between the sheets can help you get all of this and more.