Folinic acid (INN) or leucovorin (USAN), generally administered as calcium folinate (or leucovorin calcium), is an adjuvant used in cancer chemotherapy involving the drug methotrexate. It is also used in synergistic combination with the chemotherapy 5-fluorouracil.

Folinic acid is not folic acid.

Mechanism of action

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Folinic acid is a 5-formyl-derivative of tetrahydrofolic acid. It is readily converted to other reduced folic acid derivatives (e.g. tetrahydrofolate). Since it does not require the action of dihydrofolate reductase for its conversion, it will be unaffected by inhibition of this enzyme by drugs such as methotrexate.

More on [ Folinic acid ]

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January 30 leucovorin shortage update from ASHP. All back-ordered. Teva imported supplies depleted, more early Feb. http://t.co/1PRRP3ex
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