Furosemide and Salsalate interaction
Furosemide and Salsalate: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Furosemide label · effective 2026-05-13
• Salicylates : Risk of salicylate toxicity ( 7.1 )
Salicylates May experience salicylate toxicity at lower doses because of competitive renal excretory sites.
Monitor for symptoms of salicylate toxicity.
From the Salsalate label · effective 2024-02-08
Furosemide Clinical studies, as well as post marketing observations, have shown that Salsalate tablets, USP can reduce the natriuretic effect-of furosemide and thiazides in some patients.
Patients at greatest risk of this reaction are those with impaired renal function, heart failure, liver dysfunction, those taking diuretics and ACE inhibitors, and the elderly.
During concomitant therapy with NSAIDs, the patient should be observed closely for signs of renal failure (see PRECAUTIONS, Renal Effects ), as well as to assure diuretic efficacy.
Patients taking thiazides or loop diuretics may have impaired response to these therapies when taking NSAIDs.
DRUG INTERACTIONS ACE-inhibitors Reports suggest that NSAIDs may diminish the antihypertensive effect of ACE-inhibitors.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.