Erectile Dysfunction and Blood Pressure: Causes, Medicines, Pills
How high blood pressure and ED are linked, which blood pressure medication can cause ED, and what the Viagra and Cialis labels say about taking both.
By Julian Caraulani · Last updated
SafetyReviewed by Dr. A. Goher, MBBS
- FDA-approved and compounded
- LegitScript seal ID shown
- 49 states (not AR)
This page sticks to what the NIH and the FDA drug labels say. It does not tell you to start, stop or change any medicine. Your prescriber makes those calls with your full medicine list in front of them.
How high blood pressure leads to ED
An erection depends on blood flowing into the penis and staying there. Over years, high blood pressure can harm the lining of the arteries and narrow them. The arteries in the penis are small, so they can show the damage early.
The NIH names "heart and blood vessel diseases, such as atherosclerosis, high blood pressure, and stroke" among the most common causes of ED (NIDDK: causes of ED). Atherosclerosis means fatty buildup that narrows the arteries.
High blood pressure is easy to miss. MedlinePlus says: "High blood pressure usually has no symptoms. So the only way to find out if you have it is to get regular blood pressure checks from your health care provider." (MedlinePlus: high blood pressure, read 14 November 2026). ED is one reason to get that check. Our guide to erectile dysfunction causes covers the other causes.
What the numbers mean
A blood pressure reading has two numbers, such as 120/80. MedlinePlus explains that the top number, systolic, is the pressure "when your heart beats", and the bottom number, diastolic, is the pressure when "your heart is at rest, between beats" (MedlinePlus: high blood pressure).
On the MedlinePlus chart, "Normal" is a top number below 120 and a bottom number below 80. Stage 2 high blood pressure starts at 140 over 90. These are general categories. Your own target is for your clinician to set.
- FDA-approved and compounded
- LegitScript seal ID shown
- 49 states (not AR)
ED and blood pressure medication
The NIH lists "blood pressure medicines and diuretics, or water pills" among the medicines that can cause ED as a side effect (NIDDK: causes of ED). Diuretics make you pass more water, which lowers blood pressure. Our guide to medications that can cause ED names common ones.
That leaves many men in a bind. The disease can cause ED, and so can the treatment. Two points matter here:
- Never stop a blood pressure medicine on your own. Untreated high blood pressure raises the risk of a heart attack and stroke.
- Ask about a switch. There are several groups of blood pressure drugs. If ED started after a new medicine, the prescriber may be able to change it.
Can you take an ED pill with blood pressure medicine?
Many men do, under a prescriber's care. But the labels ask for caution, because ED pills lower blood pressure a little on their own.
The Viagra label says: "VIAGRA can potentiate the hypotensive effects of nitrates, alpha-blockers, and anti-hypertensives" (DailyMed: Viagra label, read 14 November 2026). In plain words, it can add to the drop in blood pressure from these drugs. Anti-hypertensives are blood pressure medicines.
The Cialis label tested tadalafil with several blood pressure drugs, including amlodipine, enalapril and metoprolol. It reports that "Small reductions in blood pressure occurred following coadministration of tadalafil with these agents compared with placebo." (DailyMed: Cialis label, read 14 November 2026). Coadministration means taking them together. Placebo means a dummy pill.
Our ED pill side effects guide goes drug by drug, including metoprolol, losartan and alpha-blockers.
The one hard rule: nitrates
Nitrates are heart medicines for chest pain, such as nitroglycerin. Both labels say you must not combine them with an ED pill. The Viagra label calls use with "organic nitrates or organic nitrites in any form" contraindicated, meaning it must not be done (DailyMed: Viagra label). "Poppers" are nitrites too.
Very high or very low blood pressure
The labels also flag blood pressure that is out of range. The Viagra label says there are no safety data for men whose resting blood pressure is below 90/50 or above 170/110, and that prescribing there "should be done with caution" (DailyMed: Viagra label). Hypotension means low blood pressure. Hypertension means high blood pressure.
The Cialis label says Cialis "is not recommended" for some groups, including men with "uncontrolled hypertension" (DailyMed: Cialis label). It also says: "Patients should not use CIALIS if sex is inadvisable due to cardiovascular status." Cardiovascular means heart and blood vessels. Our guide on whether Viagra can cause a heart attack covers what the label says.
What this means for buying ED pills online
An online program can prescribe safely for a man on blood pressure medicine. A good intake asks for your readings and every medicine you take. If a site never asks, that is a red flag. Our legit checker lists the other warning signs.
Price is the same whatever your blood pressure. Generic sildenafil starts at $1.60 a dose at Strut Health, and the cheapest all-in ED plan we track is $16 a month at Strut Health, checked November 14, 2026. Every price is on ED cost by program, and the ranking is on our best ED programs.
Questions
FAQ
Can high blood pressure cause erectile dysfunction?
Yes. The NIH lists high blood pressure among the most common causes of ED. Over time it can narrow and harm the arteries, including the small ones in the penis, so less blood flows in. High blood pressure often has no symptoms, so ED can be a reason to get your blood pressure checked.
Which blood pressure medication causes ED?
The NIH lists blood pressure medicines and diuretics, or water pills, among the medicines that can cause ED. It does not single out one drug. If ED started after a new blood pressure medicine, ask the prescriber about a switch. Never stop a blood pressure medicine on your own, because the risks of untreated high blood pressure are serious.
Is it safe to take Viagra with blood pressure medicine?
Many men take both under a prescriber's care. The Viagra label says it can add to the drop in blood pressure from blood pressure medicines, so prescribers ask for your full medicine list. The one combination both labels forbid is an ED pill with a nitrate, such as nitroglycerin. Our guide on whether Viagra is a blood thinner covers aspirin and other common pills.
Does Cialis lower blood pressure?
A little. The Cialis label says tadalafil has mild effects that widen blood vessels and "may result in transient decreases in blood pressure", meaning short-lived drops. Taken with blood pressure medicines in its studies, it caused small extra drops. It is not a blood pressure treatment, and the label does not present it as one.
Can I take an ED pill if my blood pressure is very high?
The Viagra label has no safety data for men above 170/110, and the Cialis label does not recommend Cialis with uncontrolled high blood pressure. A clinician will usually want your blood pressure under control first. That is a decision for them, based on your readings and your heart health. For every ED price side by side, see ED cost by program.
Check this page with an AI assistant:ChatGPTPerplexityClaude
Not affiliated with OpenAI, Perplexity or Anthropic.