Abstrak
In teenage girls need iron intake that must be sufficient. Lack of iron nutritional intake can cause anemia which will have an impact on body resistance, fitness, and academic achievement. Awareness of blood-added tablets consumption by girls during menstruation cannot be separated from information and knowledge. The purpose of this study is to find out the level of knowledge of teenage girls about the consumption of blood-added tablets in Public Senior High School 1 Sentolo Kulon Progo in February 2025. This study is a descriptive observasional. The population in this study is female students of Public Senior High School 1 Sentolo totaling 335 female students with a sample of 85 respondents. The sampling technique used is simple random sampling. The instrument used is a closed questionnaire regarding the level of knowledge of teenage girls about the consumptions of blood-added tablets. Data analysis is carried out percentage measurement then categorized into good, sufficient, and less level. The result and conclusion of this study are that 48 (56,47%) respondents have a good level of knowledge, 36 respondents (42,35%) have a sufficient level of knowledge, and 1 respondent (1,18%) has less knowledge level. The level of knowledge of teenage girls about the consumption of blood-added tablets in Public Senior High School 1 Sentolo is in the good category.