Side Effects


What side effects may I notice from receiving Acetylcysteine?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-breathing problems
-fever
-low blood pressure
-rapid heartbeat

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-changes in taste or smell
-drowsiness
-flushing of the face
-nausea, vomiting
-runny nose
-sore throat

This list may not describe all possible side effects for Acetylcysteine. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Source: FDA