Since pharmacy is a discipline based on natural and life sciences, learning about pharmacy is considered useful for science students outside this field. In this survey, we investigated whether pharmacy lectures delivered to students majoring in life sciences were useful for their studies within their respective fields. A questionnaire was sent to the students enrolled in the course, asking them to evaluate, on a five-point scale, whether the lectures were helpful in deepening their learning in their field of study, both overall and for each lecture theme. Additionally, we conducted a Customer Satisfaction (CS) analysis, using the overall evaluation of the lectures as the objective variable and the evaluation of each lecture theme as the explanatory variable. The response rate was 75.0% (72/96). Overall, 98.6% of the respondents found the lectures helpful in deepening their learning in their field of study. The satisfaction rate for each lecture topic exceeded 80%. When the CS graph was created, the lecture themes categorized as “priority maintenance field” were “Pain, psychology, analgesics, psychotic drugs” and “Adverse event.” In contrast, the themes identified as “priority improvement field” were “Hypertension and the therapeutic agent” and “Drug interactions.” These findings suggest that pharmacy lectures might be useful for deepening the learning of students majoring in life sciences.