Lisinopril can cause a temporary dip in sexual function, but it’s one of the least likely blood pressure medications to cause lasting erectile dysfunction. In a head-to-head study comparing lisinopril to a common beta blocker, sexual activity dropped during the first month on lisinopril but returned to normal with continued use. That pattern sets it apart from several other blood pressure drug classes.
The more important factor may be high blood pressure itself. Men with hypertension are about 2.5 times more likely to have ED than men with normal blood pressure, with roughly 35% of hypertensive men affected compared to 14% of normotensive men. So if you started lisinopril and noticed erection problems, the medication might not be the real culprit.
What the Research Shows About Lisinopril and ED
In a crossover study that tested both lisinopril and the beta blocker atenolol in the same patients, sexual intercourse frequency dropped from about 7 episodes per month to 5 during lisinopril’s first month. By the time patients had been on the drug for several months, that number climbed back to nearly 8, essentially matching their pre-treatment baseline. Atenolol told a different story: intercourse dropped from about 8 episodes to 4.5 in the first month and stayed there for the duration of treatment. The difference between the two drugs was statistically significant.
These findings point to a consistent pattern. ACE inhibitors as a class, the drug family lisinopril belongs to, have a neutral-to-mild effect on sexual function. Some animal studies have even shown improvement in erectile function with ACE inhibitors, though human data has been more mixed, ranging from no effect to a slight temporary decline. The 2025 guidelines from the American Heart Association and American College of Cardiology list ACE inhibitors in a middle category for sexual side effects, neither clearly harmful nor clearly beneficial.
Why High Blood Pressure Itself Causes ED
Erections depend on healthy blood vessels. When blood pressure is chronically elevated, the inner lining of blood vessels (the endothelium) gets damaged over time. That lining is responsible for releasing the chemical signals that relax smooth muscle and allow blood to flow into the penis. Once that lining stops working properly, achieving and maintaining an erection becomes harder, regardless of what medications you’re taking.
This is why researchers consistently find that untreated hypertension is a major risk factor for ED. High blood pressure, diabetes, high cholesterol, and smoking all damage the same vascular system that erections rely on. In many cases, ED is actually an early warning sign that cardiovascular health is declining.
How Lisinopril Compares to Other Blood Pressure Drugs
Not all blood pressure medications affect sexual function equally. Here’s how the major classes stack up:
- Diuretics (water pills): The worst offenders. In the Trial of Antihypertensive Interventions and Management, 28% of patients on the diuretic chlorthalidone reported worsening erection problems, compared to just 3% on placebo.
- Beta blockers: Also problematic. In that same trial, 11% of patients on atenolol had worsening erection issues. Other studies confirm beta blockers cause chronic sexual dysfunction that doesn’t improve with continued use. One newer beta blocker, nebivolol, appears to be the exception.
- ACE inhibitors (including lisinopril): Rated as having a neutral effect overall. Any decline in the first weeks of treatment tends to resolve.
- ARBs (angiotensin receptor blockers): The most favorable profile for sexual function in both men and women, according to the 2025 AHA/ACC guidelines.
If you’re currently on a diuretic or beta blocker and experiencing ED, the medication is a more likely contributor than if you’re on lisinopril.
Using ED Medications While on Lisinopril
Common ED medications like sildenafil (Viagra) and tadalafil (Cialis) are safe to use with lisinopril, but there’s one important consideration: both drugs lower blood pressure. Combining them with lisinopril can amplify that effect, potentially causing dizziness, lightheadedness, or fainting, especially when you first start taking them, after a dose increase, or when standing up quickly.
Alcohol makes this worse. It adds its own blood pressure-lowering effect on top of both medications, so limiting drinks on days you take an ED medication is worth keeping in mind. These interactions are manageable for most people, but your prescriber needs to know you’re taking both so they can monitor your blood pressure appropriately.
What to Do if You Suspect Lisinopril Is the Cause
If ED started within the first few weeks of beginning lisinopril, it may resolve on its own as your body adjusts. The research suggests giving it at least four to six weeks before assuming the drug is responsible for a lasting problem.
If the issue persists beyond that window, it’s worth considering other factors. Are you also on a diuretic or beta blocker? Many people take lisinopril alongside other blood pressure drugs, and a combination pill or second medication could be the actual source. Lifestyle factors like weight, physical activity, smoking, and alcohol intake all play significant roles in both blood pressure and erectile function.
For men who want to explore switching, ARBs are the class with the best track record for sexual function and work through a similar mechanism to ACE inhibitors. This makes them a natural alternative when ED is a concern, though any medication change should be based on your full health picture rather than a single side effect.