Can Cozaar Be Safely Combined with Concor for Hypertension? - Cardiology

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Can Cozaar be used in combination with Concor?


I am a patient with hypertension and I am currently taking Cozaar, but my blood pressure is not decreasing.
Can I combine it with Concor? If so, how should I take it? Thank you!

hh, 30~39 year old female. Ask Date: 2007/04/24

Dr. Huang Guosheng reply Cardiology


Hello: In addition to medication, controlling hypertension also involves diet (low salt, low oil, and increased consumption of vegetables and fruits), exercise (at least three times a week, with each session lasting more than 30 minutes), and smoking cessation.
If dietary and exercise modifications meet these criteria but blood pressure remains uncontrolled, it may be necessary to consider increasing the dosage of existing medications or adding other medications, such as beta-blockers (Concor, Tenormin) or calcium channel blockers (Norvasc, Plendil).

Reply Date: 2007/04/24

More Info


Cozaar (losartan) and Concor (bisoprolol) can indeed be safely combined for the treatment of hypertension, especially in cases where blood pressure is not adequately controlled with a single medication. Both medications work through different mechanisms, which can provide a synergistic effect when used together.

Cozaar is an angiotensin II receptor blocker (ARB) that helps relax blood vessels, making it easier for the heart to pump blood. It is often prescribed for patients with hypertension and can also provide renal protective effects, particularly in patients with diabetes or chronic kidney disease. On the other hand, Concor is a beta-blocker that reduces heart rate and the force of contraction of the heart, which can lower blood pressure and reduce the workload on the heart.

When combining these two medications, it is essential to monitor blood pressure regularly to ensure that it is adequately controlled and to avoid potential side effects. The typical starting dose for Cozaar is 50 mg once daily, while Concor is often started at 5 mg once daily. Depending on individual response and tolerability, your healthcare provider may adjust the dosages. It is crucial to follow your doctor's instructions regarding the specific dosages and timing of these medications.

In terms of safety, studies have shown that combining an ARB with a beta-blocker can be effective and generally well-tolerated. However, it is important to be aware of potential side effects. Common side effects of Cozaar include dizziness, fatigue, and elevated potassium levels, while Concor may cause fatigue, bradycardia (slow heart rate), and hypotension (low blood pressure). When these medications are used together, there is a risk of additive effects on blood pressure, which could lead to hypotension, especially when initiating therapy or adjusting doses.

In addition to medication, lifestyle modifications play a crucial role in managing hypertension. A balanced diet low in sodium and rich in fruits and vegetables, regular physical activity, maintaining a healthy weight, and avoiding tobacco use can significantly impact blood pressure control. If lifestyle changes and medication adjustments do not lead to adequate blood pressure control, further evaluation by a healthcare provider may be necessary to explore additional treatment options.

In conclusion, combining Cozaar and Concor can be a safe and effective strategy for managing hypertension, particularly in patients who do not achieve target blood pressure with monotherapy. Always consult with your healthcare provider before making any changes to your medication regimen, and ensure regular follow-up appointments to monitor your blood pressure and overall health.

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