Rahmadani , A., Ridwanto, R., Daulay , A.S. and Nasution , H.M. 2025. Determination of total flavonoid content in 70% ethanol extract and ethyl acetate extract of sambung nyawa Leaves (Gynura procumbens (Lour) Merr.) using UV-Vis spectrophotometry. Journal of Pharmaceutical and Sciences. 8, 1 (Feb. 2025), 114–128. DOI:https://doi.org/10.36490/journal-jps.com.v8i1.751.