Valsartan is unlikely to cause erectile dysfunction. In fact, it’s one of the blood pressure medications least associated with sexual side effects, and several studies suggest it may actually improve erectile function in men with high blood pressure. In a crossover trial of 160 hypertensive men, only 0.9% reported erectile dysfunction while taking valsartan, the same rate as the placebo group.
What the Clinical Evidence Shows
The most direct evidence comes from a randomized, double-blind crossover study comparing valsartan to carvedilol (a beta-blocker) in 160 newly diagnosed hypertensive men aged 40 to 49. None of the men had any sexual dysfunction before the study began. The results were striking: 13.5% of men on carvedilol developed erectile dysfunction, while only 0.9% on valsartan did, matching the placebo rate exactly.
Sexual activity told a similar story. Men on carvedilol saw their monthly frequency drop from about 8 episodes to 4.4 in the first month, then fall further to 3.7 over time. Men on valsartan experienced a smaller, statistically insignificant dip to 6.6 episodes in the first month, then rebounded to 10.2 episodes per month, actually surpassing their baseline.
Two larger studies reinforced these findings. One tracked 2,202 hypertensive patients and found that valsartan increased weekly sexual activity. Another, involving 3,502 patients, found that valsartan improved all aspects of sexual function, particularly erectile function. Men who had developed erectile dysfunction while taking other blood pressure medications showed marked improvement after switching to valsartan.
Why Valsartan May Help Rather Than Harm
Erections depend on blood flow. When you’re sexually aroused, nerve cells release a signaling molecule that relaxes the smooth muscle in penile blood vessels, allowing them to fill with blood. A hormone called angiotensin II works against this process. It constricts blood vessels throughout the body, including those that supply erectile tissue. Injecting angiotensin II directly into penile tissue actually terminates erections in animal studies.
Valsartan belongs to a class called angiotensin receptor blockers (ARBs). It works by preventing angiotensin II from binding to its receptors, which relaxes blood vessels and lowers blood pressure. That same mechanism appears to protect erectile tissue. Animal research shows ARBs can reverse some of the structural damage that high blood pressure causes to penile blood vessels. Researchers have also suggested that blocking angiotensin II may increase sexual desire, not just physical function.
How Other Blood Pressure Medications Compare
Not all blood pressure drugs carry the same risk for sexual side effects, and the differences are substantial. Older classes of medication are the most common culprits. Beta-blockers like atenolol and carvedilol are well known to impair erectile function, with rates reported at 13% or higher in clinical trials. Thiazide diuretics (water pills) also carry a meaningful risk.
Newer drug classes perform much better. ARBs like valsartan, along with ACE inhibitors and calcium channel blockers, have what researchers describe as “neutral or even beneficial effects” on sexual function. Among these, ARBs have the strongest evidence for actively improving erectile function rather than simply not worsening it. Current guidelines recommend selecting blood pressure drugs that are relatively safe for sexual function, especially in patients who already have erectile problems, and ARBs are considered a preferred choice.
If You’re Experiencing Erectile Dysfunction on Blood Pressure Medication
High blood pressure itself is a major cause of erectile dysfunction, independent of any medication. The same vascular damage that raises your cardiovascular risk also impairs blood flow to erectile tissue. So the culprit may be your blood pressure, your medication, or both working together.
If you developed erectile problems after starting a blood pressure drug, particularly a beta-blocker or diuretic, switching to a different class is a reasonable conversation to have with your prescriber. Guidelines recommend that changing therapy should be considered unless your current medication is specifically needed for another reason, like heart failure or a prior heart attack. Lifestyle changes like exercise, weight management, and reducing alcohol also form the foundation of treatment for blood pressure-related erectile dysfunction.
It’s also worth noting that doctors are encouraged to evaluate erectile function before starting blood pressure treatment and to reassess it periodically afterward. If your prescriber hasn’t asked, bringing it up yourself can help distinguish whether the issue is from your condition, your treatment, or something else entirely.
Using ED Medications With Valsartan
If you take valsartan and want to use an erectile dysfunction medication like sildenafil or tadalafil, the combination is generally considered safe. Both drug types lower blood pressure through different pathways, so the main concern is an additive drop in blood pressure that could cause dizziness or lightheadedness. Clinical studies found both drugs were well tolerated together, but starting at a lower dose of the ED medication or introducing it gradually is a reasonable precaution. This applies more strongly to the combination product that pairs valsartan with sacubitril (used for heart failure), where the blood pressure effect can be more pronounced.