The dataset includes markers of oxidative state in banded mongooses at Queen Elizabeth National Park, Uganda, in the period 2017-2021. Data are: red blood cell concentrations of glutathione; blood plasma concentrations of malondialdehyde; blood plasma concentrations of protein carbonyls; red blood cell activity of total superoxide dismutase; and whole milk concentrations of malondialdehyde. Full details about this dataset can be found at https://doi.org/10.5285/481c424e-f277-4eb7-9ee0-cbdb5532ef79