If you are addicted to heroin it means that you develop withdrawal symptoms within a day or so of the last dose. These symptoms are listed in the separate leaflet called Medicines for Drug Dependence. If you are addicted to heroin you need a regular dose to feel 'normal'.
This is a companion discussion topic for the original article at https://patient.info/healthy-living/recreational-drugs/buprenorphine-replacement-for-heroin