Metformin and Triamterene and hydrochlorothiazide interaction
Metformin and Triamterene and hydrochlorothiazide: 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 Triamterene and hydrochlorothiazide label · effective 2026-07-16
Oral Hypoglycemic Drugs Concurrent use with chlorpropamide may increase the risk of severe hyponatremia.
From the Metformin (Metformin hydrochloride) label · effective 2024-11-14
Examples: Thiazides and other diuretics, corticosteroids, phenothiazines, thyroid products, estrogens, oral contraceptives, phenytoin, nicotinic acid, sympathomimetics, calcium channel blockers, and isoniazid.
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.