Do not use salt substitutes or potassium supplements while taking quinapril, unless your doctor has told you to.
Avoid drinking alcohol. It can further lower your blood pressure and may increase some of the side effects of quinapril.
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
Other drugs may interact with quinapril, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.