Drug Interactions With Quinapril
Quinapril may increase the risk of lithium toxicity and may increase the lithium levels in the blood. Your healthcare provider may choose to monitor your blood lithium levels more frequently and may need to adjust your lithium dosage.
Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)
Quinapril can interact with NSAIDs in several ways. The combination could cause your blood pressure to increase or may cause swelling (edema), especially if you have congestive heart failure (CHF). If you are elderly, have kidney disease or kidney failure, or are taking a diuretic ("water pill") or are dehydrated, taking NSAIDs and quinapril together may cause kidney failure. Talk to your healthcare provider about this potential drug interaction before taking these medications together.
If you are taking a potassium product together with quinapril, the levels of potassium in your blood may become too high. This can cause serious problems. For your particular situation, talk to your healthcare provider about using potassium and quinapril together.
If you are taking quinapril and a potassium-sparing diuretic, your blood pressure may decrease too much and/or the levels of potassium in your blood may become too high. Your healthcare provider may choose to monitor your progress closely.
Taking both tetracycline and quinapril together may decrease the amount of tetracycline absorbed into the body. If you are taking quinapril and are prescribed tetracycline, let your healthcare provider know. He or she may choose to monitor your situation more closely, consider another antibiotic, or recommend taking these two medications far apart during the day.