The HEPMA data resource captures and compiles information on all medicines prescribed within the ward/hospital covered by the system; this includes medicine name, formulation, strength, dose, route, and frequency of administration, and dates and times of prescribing. In addition, the HEPMA dataset also captures information on medicines administration, including dates and time of administration.

HEPMA is a live clinical system and updated on a continuous basis. Data is automatically extracted from local systems at least weekly and in most cases, on a nightly basis, and integrated into the national HEPMA dataset. Data is currently submitted by all health boards except NHS Fife and NHS Borders.