Thick and stubborn mucus in the airways - PARI MucoClear 3% 60x4 ml Chronic respiratory congestion - PARI MucoClear 3% 60x4 ml Impaired mucus clearance in conditions like COPD or cystic fibrosis - PARI MucoClear 3% 60x4 ml Breathing difficulties due to mucus buildup - PARI MucoClear 3% 60x4 ml