Oktavia, R., Rohama, R. and Saputri, R. 2023. A Antioxidant Activity And Determination Of Flavonoid Content Of Ethanol Extract Red Betel Leaf (Piper crocatum Ruiz & Pav) With Variation Of Particle Size Simplisia Powder. Journal Pharmaceutical Care and Sciences. 4, 1 (Nov. 2023), 25–33. DOI:https://doi.org/10.33859/jpcs.v4i1.422.