 There are many tried-and-tested methods in the literature for using pictures and diagrams to aid patient compliance.Symbols such as a rising or setting sun to depict time of day have been used, particularly for treatments where regular medication is important, such as cases of tuberculosis or leprosy.Poverty may force patients to purchase one day's supply of medicines at a time, so it is important to ensure that antibiotics are used rationally and not just for one or two day's treatment.