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Viagra and Blood Pressure: What You Should Know

Lynn-Marie Morski

Reviewed by Lynn Marie Morski, MD, JD

Written by Lauren Panoff

Published 03/03/2023

Updated 07/31/2025

When you have more than one health condition, things start to get complicated. Life-threatening problems can result when drug interactions between your daily medications cause side effects, and nowhere might that be clearer than with Viagra® and high blood pressure.

The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) reports that approximately 30 to 50 million men in the United States are affected by erectile dysfunction (ED). Given this large number, it’s safe to assume there are lots of guys who deal with both erectile dysfunction and high blood pressure.

It leads to a lot of questions with some serious implications. Let’s answer a few quickly:

  • Does Viagra raise your blood pressure? No, it doesn’t.

  • Does Viagra lower your blood pressure? Yes, it can cause low blood pressure, also known as hypotension.

  • Are high blood pressure and Viagra a dangerous combination? It depends what medications you’re on.

Don’t be too worried. If you follow some simple precautions, you can lessen the chance of having issues with blood pressure. But first, the most pressing question.

Generally, it’s thought to be safe to take Viagra if you have high blood pressure that is under control.

Now that you have the good news, it’s probably helpful to understand how sildenafil works

If you don’t deal with ED, when you get aroused, signals travel from your brain to the smooth muscles in your blood vessels that encourage blood to flow to your penis.

Viagra is a phosphodiesterase type 5 (PDE5) inhibitor. PDE5 inhibitors work by increasing blood flow to your penis, which increases in size and gets firm.

Your penis stays firm thanks to the tunica albuginea (a type of fibrous connective tissue), which reduces the amount of blood that can flow out of the penis until you are no longer aroused.

If something goes wonky with this process, sildenafil citrate can help by dilating the arteries that allow blood to flow into your penis. This encourages more blood to flow into the area, making you erect.

When you have high blood pressure, your heart and blood vessels must work harder to flow blood through your body. This is pretty much the opposite of what sildenafil does.

As a reminder, it relaxes certain blood vessels to allow blood to flow more easily.

Does Viagra raise blood pressure? 

While Viagra may increase blood flow to the penis, it doesn’t raise blood pressure. Research suggests the opposite when it comes to the effects of sildenafil. 

So, Does Viagra Lower Blood Pressure Then?

One older study found slight decreases in blood pressure in men taking sildenafil. 

However, the researchers noted that the decrease in blood pressure was insignificant. It also concluded that sildenafil is generally safe for younger and older men with and without hypertension.

Research has found that taking Viagra does not increase high blood pressure. 

Sildenafil, the active ingredient in Viagra, is actually used to treat a particular kind of high blood pressure in the lungs. Called Revatio (and also available as generic), this version of sildenafil is FDA approved to treat pulmonary arterial hypertension (PAH). 

This is because, in addition to dilating the arteries that supply blood to the penis, sildenafil can dilate the blood vessels in the lungs and reduce blood pressure there.

Separately, if you’re dealing with high blood pressure, it could impact your sex life by inhibiting your sexual function.

Mostly, there are no overt symptoms of high blood pressure. Many people may not even know they have hypertension until they see a healthcare provider.

However, having high blood pressure can damage your arteries over time. This could result in less blood and oxygen getting to your heart, which can lead to cardiovascular disease (more commonly called heart disease), chest pain (angina), and even a heart attack or heart failure.

If you have heart issues caused by high blood pressure, it’ll be hard to focus on sexual desire. This is just one of many reasons it’s essential to take care of your health and regularly check in with a healthcare provider for medical advice.

ED treatment personalized

It’s important to talk to your healthcare provider before taking Viagra and let them know about what medical conditions you have and what medications you are taking. 

Viagra can interact with several different medications, including blood pressure medications and those used for heart disease

While some combinations might be okay (again, with the guidance of a healthcare professional), Viagra should not be mixed with medications such as alpha blockers, nitrates, and others. These medication interactions can cause a dangerous drop in blood pressure. 

It’s worth repeating, most people with elevated blood pressure can take Viagra (or sildenafil) as long as you’ve discussed it with your healthcare provider and are avoiding specific drug interactions. 

In addition to Viagra, there are various other ED medications that have been shown to work as treatment options for sexual dysfunction. This includes:

  • Tadalafil. Tadalafil (and the brand name Cialis®) is in the same class of medications as Viagra. It can last up to 36 hours, which is why it’s often called the “weekend ED medication.”

  • Levitra®. Levitra (and the generic version vardenafil) is another type of ED medication. It works within 30 to 120 minutes of taking it. 

  • Avanafil. Avanafil (sold under the brand name Stendra®) works after 30 minutes. Many like it because it’s associated with fewer side effects than other oral ED medications.

If you’re interested in taking an ED medication or want to learn more about how these types of treatments impact blood pressure, it’s best to consult with a healthcare professional.

Hims offers consultations that make it easy to discuss your sexual dysfunction, along with any other medical conditions you may have that could interact with ED medications or be causing your erection issues. Get started today.

7 Sources

  1. American Heart Association. (2024). What is High Blood Pressure? https://www.heart.org/en/health-topics/high-blood-pressure/the-facts-about-high-blood-pressure
  2. ClinicalTrials.gov. (2006). Effect of Regular Sildenafil on Blood Pressure and Arterial Function in Hypertension. https://clinicaltrials.gov/study/NCT00317421
  3. FDA. (2011). HIGHLIGHTS OF PRESCRIBING INFORMATION: Cialis. https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/021368s20s21lbl.pdf
  4. FDA. (2023). HIGHLIGHTS OF PRESCRIBING INFORMATION Levitra. https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/021400s023lbl.pdf
  5. FDA. (2012). HIGHLIGHTS OF PRESCRIBING INFORMATION: Stendra. https://www.accessdata.fda.gov/drugsatfda_docs/label/2012/202276s000lbl.pdf
  6. National Institute of Diabetes and Digestive and Kidney Diseases. (2024). Definition & Facts for Erectile Dysfunction. https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction/definition-facts
  7. Vardi Y, Klein L, Nassar S, Sprecher E, Gruenwald I. Effects of sildenafil citrate (viagra) on blood pressure in normotensive and hypertensive men. Urology. 2002;59(5):747-752. doi:10.1016/s0090-4295(02)01510-8 https://pubmed.ncbi.nlm.nih.gov/11992853/
Editorial Standards

Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references. See a mistake? Let us know at blog@forhims.com!

This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment. Learn more about our editorial standards here.

Lynn Marie Morski, MD, JD

Basic Information

  • Full Name: Lynn Marie Morski, MD, JD

  • Current Role at Hims & Hers: Medical Advisor

Credentials & Background

Experience & Expertise

Contributions to Hims & Hers

  • Medical Content Reviewed & Approved:

    • List pages or topics the expert has reviewed for accuracy

  • Quotes or Expert Insights:

    • Mental health care isn’t a luxury, it’s a fundamental part of overall well-being. We all deserve mental health support that’s evidence-based, accessible, and affordable.

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    • A User’s Guide to Therapeutic Psychedelics: From magic mushrooms to MDMA and ayahuasca to ibogaine—everything you need to know before (and after) taking the leap - Oprah Daily, May 6, 2024

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  • Why I Practice Medicine:

    • I'm passionate about helping people access reliable, affordable healthcare—without stigma or unnecessary barriers. Everyone deserves to feel informed and empowered when it comes to their health!

  • Hobbies & Interests:

    • Salsa dancing, drumming, surfing, scuba diving, triathlons

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