find dexilant (dexlansoprazole) medication information. learn about dexilant, including side effects, dosage, how it works, and more. important safety information: dexilant may not be right for everyone. do not take dexilant if you are allergic to dexilant or any of its ingredients. serious allergic reactions have been reported. tell your doctor if you get any of the following symptoms with dexilant: rash, face swelling, throat tightness, or difficulty breathing. symptom relief does not rule out other serious stomach conditions. dexilant may increase your risk of getting severe diarrhea. call your doctor right away if you have watery stool, stomach pain, and fever that does not go away. people who are taking multiple daily doses of proton pump inhibitor (ppi) medicines for a long period of time (a year or longer) may have an increased risk of fractures of the hip, wrist, or spine. low magnesium levels can happen in some people who take a ppi medicine. the most common side effects of dexilant were diarrhea (4.8%), stomach pain (4.0%), nausea (2.9%), common cold (1.9%), vomiting (1.6%), and gas (1.6%). dexilant and certain other medicines can affect each other. before taking dexilant, tell your doctor if you are taking ampicillin, atazanavir, digoxin, iron, ketoconazole, tacrolimus or methotrexate. if you are taking dexilant with warfarin, you may need to be monitored because serious risks could occur. talk to your doctor or healthcare professional. please see accompanying prescribing information, including medication guide for dexilant. you are encouraged to report negative side effects of prescription drugs to the fda. visit www.fda.gov/medwatch or call 1-800-fda-1088.