These symptoms suggest chest congestion with airway constriction. To help loosen and thin the thick mucus, an over-the-counter expectorant like guaifenesin can be very helpful. For the wheezing, a prescription bronchodilator inhaler, such as albuterol (salbutamol), is typically used to open up the airways and ease your breathing. Drinking plenty of warm fluids also acts as a natural mucus thinner. Because wheezing requires a proper lung assessment to rule out conditions like asthma or bronchitis, please consult a doctor to get an accurate diagnosis and the correct prescriptions. Seek immediate care if you experience severe shortness of breath.