Yes, both Ab phylline (acebrophylline) and Ab flo N (acebrophylline with acetylcysteine) are highly effective for chest infections like bronchitis because they help dilate airways and thin out thick mucus. They can also help if throat mucus originates from your chest. While Ab flo N is excellent for clearing stubborn congestion, it is not safe to self-medicate if your infection returns. A recurring chest infection needs a proper medical evaluation to rule out complications or the need for antibiotics. Please consult your doctor before restarting these medications to ensure you get the most accurate and safe treatment for your recovery.