Before taking benazepril,
tell your doctor and pharmacist if you are allergic to benazepril; other ACE inhibitors such as captopril (Capoten), enalapril (Vasotec, in Vaseretic), fosinopril (Monopril), lisinopril (in Prinzide, in Zestoretic), moexipril (Univasc, in Uniretic), perindopril (Aceon), quinapril (Accupril, in Accuretic, in Quinaretic), ramipril (Altace), and trandolapril (Mavik, in Tarka); any other medications; or any ingredients in benazepril tablets. Ask your pharmacist for a list of the ingredients.
tell your doctor or pharmacist if you are taking valsartan and sacubitril (Entresto) or if you have stopped taking it within the last 36 hours. Your doctor will probably tell you not to take benazepril, if you are also taking valsartan and sacubitril. Also, tell your doctor if you have diabetes and you are taking aliskiren (Tekturna, in Amturnide, Tekamlo, Tekturna HCT). Your doctor will probably tell you not to take benazepril if you have diabetes and you are also taking aliskiren.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention any of the following: diuretics ('water pills'), lithium (Lithobid), and potassium supplements. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
tell your doctor if you have recently had severe diarrhea or vomiting and if you have diabetes, heart failure, kidney disease, lupus, or scleroderma (a condition in which extra tissue grows on the skin and some organs).
tell your doctor if you are breastfeeding.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking benazepril.
you should know that diarrhea, vomiting, not drinking enough fluids, and sweating a lot can cause a drop in blood pressure, which may cause lightheadedness and fainting.