Flavonoids are well-known phytochemicals with antioxidant properties. They are an essential component of various medicinal, pharmaceutical, nutraceutical, and cosmetic products. In the current study we evaluated the erythrocyte membrane protection efficacy of flavonoid rich butanolic extract of Carica papaya L. (FBC) cultivar Red Lady young leaf against H2O2 induced hemolysis. The flavonoid fraction of C. papaya is a combination of eleven flavonoids viz., quercetin, quercetin dimer, kaempferol, luteolin and 2-(3,4-Dihydroxy-5-methoxyphenyl)- 3,5,7- trihydroxy-6-metoxy-2,3 dihydro-4H-chromen-4-one, rutin, isoquercetin, manghaslin, nictoflorin, astragalin and mauritianin. The result of the study showed that FBC significantly inhibited H2O2 induced hemolysis and lipid peroxidation in a concentration dependent manner (0.2 mg/mL, 0.4 mg/mL and 0.8 mg/mL). FBC at concentrations 0.2 mg/mL, 0.4 mg/mL and 0.8 mg/mL inhibited the hemolysis to 76 %, 85 % and 87 % respectively. Lipid peroxidation caused by H2O2 was reduced to 35 %, 45 % and 65 % with respect to increasing concentration of FBC. Osmotic fragility test of erythrocytes in hypotonic solutions showed that as compared to negative and positive controls, FBC pretreated (0.4 mg/mL) erythrocytes shifted the OFT curve towards left indicates the protection of erythrocytes from osmotic fragility. The membrane protection role of flavonoid extracts in erythrocytes were further confirmed by scanning electron microscopy (SEM), which was marked by the reduction in erythrocyte membrane blebbing and echinocyte formation