The effects of a salicylate, ibuprofen, and naproxen on the disposition of methotrexate in patients with rheumatoid arthritis.

Abstract:

:We have studied the pharmacokinetics of methotrexate in patients with rheumatoid arthritis concurrently treated with choline magnesium trisalicylate, ibuprofen, naproxen, or a non-NSAID analgesic (control treatment). The apparent systemic clearance of methotrexate was significantly reduced by all three treatments. Trisalicylate and ibuprofen both significantly reduced methotrexate renal clearance, but only the trisalicylate significantly displaced methotrexate from protein, increasing the fraction unbound by 28%. These data show that NSAIDs can affect the disposition of methotrexate, possibly increasing the potential for toxicity and necessitating dosage adjustments. However, large inter-subject variability precludes specific dosage recommendations.

journal_name

Eur J Clin Pharmacol

authors

Tracy TS,Krohn K,Jones DR,Bradley JD,Hall SD,Brater DC

doi

10.1007/BF00278469

subject

Has Abstract

pub_date

1992-01-01 00:00:00

pages

121-5

issue

2

eissn

0031-6970

issn

1432-1041

journal_volume

42

pub_type

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