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) Fluoroquinolone Induced Achilles Tendon Damage: Structural and Biochemical Insights into Collagen Type I Alterations Fluoroquinolones for Dermatologists: A Practical Guide to Clinical Use and Risk Management PDF) Replenishing glutathione counters ciprofloxacin induced acute liver failure via possible gene modifying mechanism