Increased knowledge can be supported by improving education delivery methods in health education, so that the quality of health services will also increase. The pocket book method is a simple way or tool used to increase student knowledge with health education (education) methods. Epigallocatechin Gallate (EGCG) is the main polyphenolic constituent found in green tea and contributes 50% to 80% which represents 200 to 300 mg/cup of green tea. Design: Quasi-Experiment with Non-Equivalent One-Group Pretest-Posttest Design. Methods: The method used in this study is a Quasi-Experiment with a Non-Equivalent One-Group Pretest-Posttest Design . The number of respondents was 58 second semester students with the Simple Random Sampling Technique . Data collection used a Knowledge Level questionnaire which was used to measure the level of knowledge before and after the intervention . Data analysis using Paired Sample T Test. Results: The results of the statistical test showed that most of the respondents (70.7 %) had sufficient level of knowledge before being given the intervention, while 10 students had less knowledge (17.2%). Furthermore, after receiving the intervention, most of the respondents had a good level of knowledge, namely as many as 36 students (62.1 % ). Conclusions: Pocket Book Education The Clinical Benefits of Green Tea EGCG ( Epigallocatechin Gallate ) in increasing the level of knowledge is very effective because the pocket book method is a simple way or tool used to increase student knowledge with health education (education) methods . This activity is also intended to be able to increase knowledge in using medicinal plants appropriately and rationally.