Yes, the active ingredient guafenisin or ANY of the other ingredients in Mucinex can cause throat swelling as an adverse or allergic reaction-- don't take anymore and if swelling gets worse go to ER or your doc asap.
All allergic reactions can cause your throat to swell and its an urgent symptom. You should see a dr asap.
- Mucinex Information for Consumers
- Mucinex Information for Healthcare Professionals (includes dosage details)
- Side Effects of Mucinex (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Updated 18 Sep 2010 • 1 answer
Updated 25 Sep 2011 • 1 answer
Updated 13 Jan 2014 • 1 answer
Updated 18 Jun 2018 • 4 answers
Updated 19 Jan 2016 • 1 answer