See also How to Use and Precautions sections.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this drug are: aliskiren, dofetilide, certain drugs that weaken the immune system/increase the risk of infection (such as everolimus, sirolimus), lithium, drugs that may increase the level of potassium in the blood (such as ARBs including losartan/valsartan, birth control pills containing drospirenone), gold injections, sacubitril.

A very serious reaction may occur if you are getting injections for bee/wasp sting allergy (desensitization) and are also taking fosinopril/hydrochlorothiazide. Make sure all your doctors know which medicines you are using.

Some products have ingredients that could raise your blood pressure or worsen your heart failure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough-and-cold products, diet aids, or NSAIDs such as ibuprofen/naproxen).

This medication may interfere with certain lab tests (such as parathyroid, protein-bound iodide, tyramine, phentolamine, and certain digoxin drug level tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.