Atenolol and chlorthalidone and Ethacrynic acid interaction
Atenolol and chlorthalidone and Ethacrynic acid: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Ethacrynic acid label · effective 2023-08-31
CONTRAINDICATIONS All diuretics, including ethacrynic acid, are contraindicated in anuria.
If increasing electrolyte imbalance, azotemia, and/or oliguria occur during treatment of severe, progressive renal disease, the diuretic should be discontinued.
In a few patients this diuretic has produced severe, watery diarrhea.
Like other diuretics it may precipitate hepatic coma and death.
A number of possibly drug-related deaths have occurred in critically ill patients refractory to other diuretics.
From the Atenolol and chlorthalidone label · effective 2025-09-22
Because of its relative beta 1 -selectivity, however, atenolol and chlorthalidone may be used with caution in patients with bronchospastic disease who do not respond to or cannot tolerate, other antihypertensive treatment.
Drug Interactions Atenolol and chlorthalidone may potentiate the action of other antihypertensive agents used concomitantly.
Lithium generally should not be given with diuretics because they reduce its renal clearance and add a high risk of lithium toxicity.
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.