What other drugs will affect Keflex?

Before taking Keflex/cephalexin, tell your doctor if you are taking any of the following medicines · probenecid (Benemid), · a loop diuretic (water pill) such as furosemide, bumetanide (Bumex), torsemide (Demadex), or ethacrynic acid (Edecrin), · warfarin (Coumadin), or · another antibiotic.

You may require a Keflex dosage adjustment or special monitoring during treatment if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with Keflex (cephalexin). Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.