HI, My grandmother is 95 years old female, suffering from shortness of breath, and cough, congestion is so much that while she gasps, she makes noises as if there is lot of cough and she is coughing also. She is doing it very frequently and she just keeps gasping and coughing, we gave her some arsenic liquid drops as suggested by the doctor, I have tried chest and cold tablets, and Dr. reddy's levodropropizine chlorpheniramine maleate syrup too, but no use. Can you please suggest the diet and what to avoid to help ease her coughing and gasping (perhaps it is shortness of breath) as soon as possible?