title: Folic acid and folinic acid supplements and methotrexate therapy: comment on the article by Morgan et al.
authors.forename: Bruce N
authors.initials: BN
authors.lastname: Cronstein
mesh_terms: D018501:Antirheumatic Agents / Q000009:adverse effects*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy* / Q000378:metabolism; D019587:Dietary Supplements; D004336:Drug Antagonism; D005492:Folic Acid / Q000008:administration & dosage*; D005494:Folic Acid Deficiency / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage*; D008727:Methotrexate / Q000009:adverse effects*; D011687:Purines / Q000378:metabolism
chemical_list: D018501:Antirheumatic Agents; D011687:Purines; D005492:Folic Acid; D002955:Leucovorin; D008727:Methotrexate