Evaluating pharmacist involvement in HIV outpatient clinics: can medication histories, drug interaction checks and adherence assessments add benefit?

Purpose of study HIV patients often take complicated regimens with high propensity for drug-drug interactions (DDIs). Physician awareness has been found to be low, and recognition relies on a comprehensive and current medication history. Patients may receive treatment from various sources such as other hospital departments, their GP, over the counter from a pharmacy or via the internet. Patients may also use herbal medicines, vitamins or supplements, some of which have potential to affect antiretroviral (ARV) therapy. Recreational drugs may also impact ARV treatment, either by affecting drug levels or adherence. This study aims to assess whether detailed medication history taking, screening for DDIs and adherence checks by a pharmacist are beneficial in HIV outpatient clinics.