Azithromycin where to buy Azithromycin is effective in reducing the symptoms of travellers’ diarrhoea, particularly if taken with loperamide. This is an off-label use of azithromycin, but it has been prescribed for travellers’ diarrhoea for many years. The symptoms of travellers’ diarrhoea should improve within 24 hours of starting antibiotic. It is recommended that you consider carrying standby antibiotics for travellers’ diarrhoea: If you are going to a remote location with little or no access to good medical assistance. If you are at high risk of the diarrhoea leading to severe illness, e.g. poorly controlled diabetes, renal impairment, heart failure, reduced CD4 HIV or other reduced immunity. If you have a pre-existing bowel problem where infection may trigger a relapse, e.g. ulcerative colitis, Crohn’s disease, coeliac disease, and previous bowel surgery. If you have a known tendency to severe travellers’ diarrhoea.