POTENSI EKSTRAK DAUN JAMBU BIJI (PSIDII FOLIUM) SEBAGAI BAHAN ALTERNATIF TERHADAP KADAR HEMOGLOBIN DAN KADAR FERRITIN PADA REMAJA PUTERI (Studi Kasus Remaja Puteri di SMK Bhakti Nusantara)

Background: Anemia is a health problem throughout the world, especially in developing countries. The incidence of anemia in adolescent girls is 57.1%. Management of anemia was carried out by administering Fe tablets, but Fe tablets had side effects, namely defecation and nausea, which led to reduced compliance with drug consumption. One alternative to preventing anemia is to use guava leaf extract which can reduce nausea side effects and contain antioxidants for the body and blood profile levels.Objective : To prove the influence of guava leaf extract on changes in hemoglobin levels and ferritin levels.Methods : The type of research method used is True Experiment. The research design used was pretest and post-test control group design. With a sample of 30 female adolescents divided into 2 groups, namely the control group given Fe 60 mg and the intervention group gave Fe 60 mg and guava leaf extract 500 mg. Data analysis using Wilcoxon and Independent T-Test.Results : After being given an intervention by consuming guava leaf extract for 14 days there were differences in Hemoglobin values after being given treatment in both groups. Mean mean Hemoglobin treatment group> Control group (11.47 ng / dl> 11.11 ng / dl), while for Ferritin levels the mean treatment group> control group (48.51 ng / dl> 24.88 ng / dl)Conclusion : Guava leaf extract has an effect on increasing hemoglobin levels and ferritin levels.Suggestion. Guava leaf extract can be used as an alternative therapy for increased hemoglobin and ferritin level