Can You Safely Use Viagra with Blood Pressure Medications? - Cardiology

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Drug interactions


Currently, I am taking BLOPRESS 8mg (Olmesartan) 1 tablet daily and Norvasc 5mg (Amlodipine) 0.5 tablet daily for hypertension.
Can I also take Viagra or similar medications? If so, will there be any side effects? Thank you!

Tiāntiān, 60~69 year old female. Ask Date: 2022/12/26

Dr. Wu Xueming reply Cardiology


Regarding patients with hypertension, research reports indicate that Viagra (sildenafil) can reduce systolic and diastolic blood pressure by an average of 7 to 10 mmHg.
Therefore, it is advised that patients taking antihypertensive medications should use it with caution.
There are no specific antihypertensive medications on the market that can avoid this combined hypotensive effect.
Generally, long-acting medications have a more stable concentration in the bloodstream and better safety profiles, while short-acting and potent antihypertensives require particular attention.
If medication has already caused a hypotensive state, the patient should be laid flat, with their legs elevated and head lowered to facilitate blood return.
Blood pressure should be monitored, and warmth should be maintained.
If blood pressure does not improve, the patient should be taken to a medical facility for further management.

Reply Date: 2022/12/26

More Info


When considering the use of Viagra (sildenafil) alongside blood pressure medications such as BLOPRESS (which contains olmesartan) and Norvasc (amlodipine), it is essential to understand both the safety and potential interactions of these medications.

Viagra is primarily used to treat erectile dysfunction by increasing blood flow to the penis. It works as a phosphodiesterase type 5 (PDE5) inhibitor, which leads to the relaxation of blood vessels and increased blood flow. This mechanism can also affect blood pressure, as it can cause a temporary decrease in systemic vascular resistance.

BLOPRESS (olmesartan) is an angiotensin II receptor blocker (ARB) that helps lower blood pressure by preventing blood vessels from narrowing. Norvasc (amlodipine) is a calcium channel blocker that also works to lower blood pressure by relaxing blood vessels. Both of these medications are commonly prescribed for hypertension and are generally well-tolerated.

The good news is that Viagra does not have a significant interaction with either BLOPRESS or Norvasc. Studies have shown that sildenafil can be safely used in patients who are on antihypertensive therapy. However, it is crucial to monitor blood pressure closely when combining these medications, as Viagra can cause a mild decrease in blood pressure.
While the combination is generally considered safe, there are a few important considerations:
1. Blood Pressure Monitoring: Since Viagra can lower blood pressure, it is advisable to monitor your blood pressure regularly, especially after starting Viagra. If you experience symptoms such as dizziness, lightheadedness, or fainting, you should contact your healthcare provider.

2. Avoiding Nitrates: One of the critical contraindications for using Viagra is the concurrent use of nitrates (such as nitroglycerin). The combination can lead to a significant drop in blood pressure, which can be dangerous. Ensure that you are not taking any nitrate medications.

3. Side Effects: While Viagra is generally well-tolerated, it can cause side effects such as headaches, flushing, nasal congestion, and gastrointestinal discomfort. If you experience any severe side effects or allergic reactions (such as swelling of the face, lips, or throat), seek medical attention immediately.

4. Consult Your Doctor: Before starting Viagra, it is essential to discuss it with your healthcare provider. They can provide personalized advice based on your overall health, the severity of your hypertension, and any other medications you may be taking.

5. Lifestyle Considerations: In addition to medication, lifestyle changes can also help manage blood pressure and improve erectile function. These include maintaining a healthy diet, regular exercise, reducing alcohol intake, and quitting smoking.

In conclusion, using Viagra with BLOPRESS and Norvasc is generally safe, but it is crucial to do so under the guidance of a healthcare professional. Regular monitoring and communication with your doctor will help ensure that you can safely enjoy the benefits of Viagra without compromising your blood pressure management. Always prioritize your health and safety by consulting with your healthcare provider before making any changes to your medication regimen.

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