An evaluation of pharmacist and health food store retailer's knowledge regarding potentional drug interactions associated with St. John's wort

Background: Natural health products (NHP) are increasingly being used by patients concomitantly receiving prescription drugs, which can result in potentially serious drug-herb interactions. This is particularly true for St. John's wort. Objective: This study was conducted to evaluate pharmacists and natural health product retailers' knowledge on this topic. Methods: An interviewer approached 24 pharmacists and 6 natural health product retailers …