A Review on Fluoroquinolones' Toxicity to Freshwater Organisms and a Risk Assessment Leucovorin (also called folinic acid) is a folate analog and chemoprotective agent. It's used to rescue healthy cells from the toxic effects of high dose methotrexate, to enhance the effectiveness of fluorouracil (5 FU) View of Levofloxacin induces erythrocyte contraction leading to red cell death Drug Target Insights Comprehensive tetracycline, ciprofloxacin and sulfamethoxazole toxicity evaluation to earthworm Dendrobaena veneta through life cycle, behavioral and biochemical parameters ScienceDirect Tumor targeted glutathione oxidation catalysis with ruthenium nanoreactors against hypoxic osteosarcoma Nature Communications