My husband is having difficult in breathing

you should immediately take your husband to the emergency room A.S.A.P 
what is the treatment for breathing diffculties ?
breathing difficulty is a priority when it comes to deal with a patient and its a very concerning complain and it should be delt with first,   usually the doctor will take the patient o2 saturation in the blood by pulseoxiometery device while adminstering the o2 mask for the patient then in case the patient is stable then the doctor will begin to search for the cause of the breathing problem and in case he didnt responde to the mask then he will sedate the patient and do an intubation for him in certian cases , in case the patient is known case of asthma or chronic obstructive pulmonary disease then he will be given steroids inhaled or iv such as dexamethasone , in case the patent is a known case of pulmonary edema then lasix is adminstered to the patient plus nitrates to reduce the fluid overload over the lungs ,  in case the patient is a known case of ischemic heart disease then he might be given aspirin and cardiac cathterization , in case there is an iunfection then antibiotics and bronchodialators are given plus o2 mask or intubation according to the severety of the case ,  in case of pulmonary embolism then embolictomy is indicated if feasible and anticoaclation drugs such as heparin
what are the causes of difficult breathing ?

• acute coronary syndrome 
• ischemic heart disease 
• pulmonary embolism 
• pulmonary edema 
• viral illness such as covid 19 or adenovirus 
• tuberculosis 
• cystic fybrosis 
• heart failure 
• emotional stress 
• head trauma
• forign body aspiration 
• pneumonia 
• upper respiratory tract infection 
• diaphragmatic hernia 
• abdominal distention 
• acid reflix disease
• asthma 
• chronic obstructive pulmonary disease 
• other causes 

what are the priliminary diagnostic tests ?
the doctor should make a clinical examination and medical history  plus arterial blood gases analysis and chest x ray, electrocardiography, echcardiography , ct with contrast to the lug arteries for the detection of the pulmonary embolism and diagnostic cardiac catheterization if acute coronary syndrome is suspected 
what is the advice ?
go to the emergency room as soon as possible 

no its an emergency and you should go to the hospital unless you know what you are dealing with here
i cannt give you a single pill to take and the patient will restore his breathing but here are some pills according to the clinical diagnosis 

• it you know that your husband is having asthma or chronic obstructive pulmonary disease then  give him prednosolone tablet 40 mg
• if you know that your husband is having a heart failure then lasix pills 40-60 mg are a very good choice + isosorbid dinitrate if he is hypertensive for now ( 2.5-5 mg sublingual) 
• in case of you know that your husband has a coronary artery disease then call emergency right now and give him aspirin 300 mg to chew while on the way 
• in you know that he is having a chest infection then call the emergency medical services  as he might need an intubated and placed on  a ventelator machine 

at last as i told you  before difficulty breathing specially in boys and males aboe the age of 35 is considred top emergency and should be seen by a medical professional whatsoever 
my advice call emergency service in your country and one other thing there is no such thing as the magic pill that can be taken to treat breathing difficulty and if you dont know what is the dignosis then give him nothing because a wrong medication can make things worse in case of you dont know whats going on with him