Simultaneous use of ambroxol and antibiotics (amoxicillin, cefuroxime, erythromycin, doxycyclin) results in an increase of concentration of the antibiotics in the lung tissue. Concomitant use with antitussive agents eg, codeine should be avoided, because they may inhibit cough reflex.
Nitroglycerin interacts with acetylcysteine. Nitroglycerin can dilate blood vessels and increase blood flow. Taking acetylcysteine seems to increase the effects of nitroglycerin. This could cause increased chance of adverse effects including headache, dizziness and light headedness.
Activated charcoal interacts with acetylcysteine. Activated charcoal sometimes used to prevent poisoning in people who take too much acetaminophen and other medications. Activated charcoal can bind up these medications in the stomach and prevent them from being absorbed by the body.