Patients with common cold and cough can generally eat oranges unless the patient has severe diabetes. The common cold is an acute upper respiratory tract infection that can cause a variety of symptoms, including fever, nasal congestion, runny nose, and sore throat, in addition to cough symptoms. You can eat oranges regardless of whether you have cough symptoms or other symptoms. Because oranges are richer in nutrients, including water and vitamins, they are beneficial in relieving the cough symptoms of a cold, and the nutrients in them are a useful supplement to the consumption of a cold, and do not aggravate the clinical symptoms of the common cold, and certainly not the cough. However, if you have severe diabetes, you should not eat oranges because they contain high levels of glucose, which can easily cause blood sugar fluctuations.