Smoothie 4 is generally referred to as dust mite drops 4. Dust mite drops 4 with 6 drops difficulty in breathing may be caused by adverse drug reactions, drug allergies, etc. It can be treated by stopping the medication as well as using other medications. 1. Stop the drug immediately: dust mite drops No. 4 is a prescription drug, there may be adverse reactions when using the drug, such as runny nose, headache, cough, asthma attack, etc. So dust mite drops No. 4 with 6 drops of dyspnea may be an adverse reaction to the drug, or there may be an allergic reaction, and the use of the drug needs to be stopped immediately. 2. You can use aminophylline tablets to relax the bronchial tubes, loratadine, dexamethasone acetate tablets and other drugs for anti-allergy treatment, if it continues to be unable to alleviate the need to consult a doctor in a timely manner, and actively give oxygen, anti-allergy and other treatments. Dyspnea may also be caused by the aggravation of underlying diseases, such as allergic rhinitis, asthma, etc. It is recommended to consult a doctor in time to avoid the delay of the condition. The above medications should be used under the supervision of a physician.