The goal of this clinical trial is to learn if a standardized pharmacists-provided education module by social media can improve patients' knowledge of chemotherapy-related side effects. The main questions it aims to answer is:
• Do patients who received a standardized pharmacists-provided education module by social media improve their knowledge of chemotherapy-related side effects? Researchers will compare standardized chemotherapy education +video (experimental group) versus chemotherapy handouts (control group).
Participants will:
* Received standardized chemotherapy education + video or chemotherapy handouts at the first and second chemotherapy section. * Fill out a questionnaire for outcomes assessment.
Breast cancer patients aged 18 or older undergoing their first chemotherapy.
Possess a smartphone and are able to watch videos on it.
Unable to read or complete questionnaires in Chinese.
Cognitive impairments.
Pregnant women.