Erectile dysfunction is treatable in most cases, and the right approach depends on what’s causing it. For some men, the fix is a pill. For others, it’s addressing an underlying health condition, working through performance anxiety, or a combination of strategies. Here’s what actually works, based on the strength of the evidence.
Why It Happens in the First Place
An erection depends on blood flow. When you’re aroused, nerve signals trigger a rush of blood into two sponge-like chambers inside the penis. Anything that disrupts blood flow, nerve signaling, or hormones can interfere with that process.
The most common physical causes are cardiovascular: heart disease, clogged arteries, high blood pressure, high cholesterol, and diabetes all damage blood vessels over time. Obesity and smoking compound the problem. In fact, ED often shows up two to five years before a heart attack, making it one of the earliest warning signs of cardiovascular trouble. If you’re under 50 and developing erection problems with no obvious explanation, it’s worth getting your heart health checked.
Psychological factors play a role too, sometimes on their own and sometimes layered on top of a physical issue. Depression, chronic stress, relationship tension, and performance anxiety can all interfere with arousal. A common pattern: a minor physical slowdown in erection quality triggers worry, which makes the problem worse, which creates more anxiety. That cycle can sustain ED long after any initial physical trigger has been addressed.
Oral Medications
Four prescription medications are the first-line treatment. All of them work the same way: they relax blood vessel walls in the penis, making it easier for blood to flow in during arousal. They don’t create arousal on their own, so stimulation is still necessary.
- Sildenafil (Viagra) works best on an empty stomach, taken about an hour before sex. Effects last four to five hours.
- Tadalafil (Cialis) can be taken with or without food, also about an hour before sex, and lasts up to 36 hours. A lower daily dose is also available, which means you don’t have to plan around timing.
- Vardenafil is similar to sildenafil in timing and duration: one hour before sex, four to five hours of effect, best on an empty stomach.
- Avanafil (Stendra) works the fastest, taken 30 minutes before sex, with or without food. It also lasts four to five hours or longer for milder cases.
These medications are effective for a majority of men. In clinical trials of tadalafil at a moderate dose, 68 to 77 percent of men achieved an erection firm enough for sex, compared to 42 to 55 percent on placebo. The other medications perform in a similar range. They don’t work for everyone, and common side effects include headache, flushing, and nasal congestion. Men taking nitrate medications for heart conditions cannot use them safely.
Fixing the Underlying Problem
Medications treat the symptom. If the root cause is a damaged cardiovascular system or an unhealthy metabolism, addressing those issues can restore erectile function on its own, or at least make medications work better.
The biggest levers are the obvious ones: losing weight if you’re overweight, exercising regularly, quitting smoking, and managing blood sugar if you have diabetes. These directly improve the health of blood vessels throughout your body, including those supplying the penis. For men whose ED is driven by poor cardiovascular fitness, consistent aerobic exercise (the kind that gets your heart rate up) can produce meaningful improvement within a few months.
Low testosterone is another piece of the puzzle. Roughly 14 to 33 percent of men with ED also have low testosterone, depending on where the cutoff is drawn. Symptoms of low testosterone extend beyond erection problems and include fatigue, reduced sex drive, loss of muscle mass, and mood changes. If blood tests confirm low levels, testosterone replacement therapy can help, particularly for restoring libido. It doesn’t always fix erection quality on its own, but it can make other treatments more effective.
Therapy for Psychological ED
When anxiety, depression, or relationship problems are driving ED, talk therapy is one of the most effective tools available. Cognitive behavioral therapy, which focuses on identifying and changing the thought patterns that fuel anxiety, has the strongest evidence behind it.
One study compared men who took medication alone to men who combined medication with ten weeks of CBT. Both groups improved initially, but at a follow-up 15 to 18 months later, the men who had received therapy continued to improve in erectile function and other measures of sexual response. The medication-only group, by contrast, showed moderate regression. In other words, therapy produced durable gains that outlasted the treatment period, while pills alone did not.
This doesn’t mean you need to choose one or the other. The combination of medication plus therapy tends to outperform either approach alone, especially when performance anxiety has become part of the cycle.
Supplements That Have Some Evidence
Most over-the-counter supplements marketed for ED have little credible evidence. One exception worth mentioning is L-citrulline, an amino acid found in watermelon. Your body converts it into another amino acid that boosts nitric oxide, the molecule responsible for relaxing blood vessels and enabling erections.
In a clinical trial, men with mild ED took 1.5 grams of L-citrulline daily for one month. Half of them improved from a mild erection problem to normal erectile function, compared to only 8 percent on placebo. Their average number of sexual encounters per month also nearly doubled. The catch: this was a small study of 24 men with only mild symptoms. L-citrulline is not a substitute for prescription medication in moderate or severe ED, but for men with mild issues who prefer to start with something over the counter, it has more evidence behind it than most alternatives.
When Medications Don’t Work
If oral medications fail, there are still effective options. Penile injections deliver medication directly into the erectile tissue and work for many men who don’t respond to pills. Vacuum erection devices use suction to draw blood into the penis and a constriction ring to maintain the erection. Both are well-established and widely used.
For men who’ve exhausted other options, penile implants are a surgical solution with remarkably high satisfaction rates. Two types are available: inflatable devices (which can be pumped up and deflated) and semi-rigid rods (which keep the penis firm but bendable). Inflatable implants are generally preferred, with satisfaction rates of 92 to 96 percent among patients and their partners in U.S. studies. Surgery is permanent and irreversible, so it’s typically a last resort, but for men who choose it, satisfaction tends to be very high.
One therapy you may see advertised is low-intensity shockwave treatment, which uses sound waves to stimulate blood vessel growth. The American Urological Association currently considers it investigational, meaning it hasn’t met the evidence threshold for a standard recommendation. Some clinics offer it at significant cost, but it’s worth knowing that urologists don’t yet consider it proven.
Putting a Plan Together
The most effective approach usually combines more than one strategy. A man with high blood pressure and performance anxiety, for example, might benefit from medication to restore function in the short term, lifestyle changes to improve blood vessel health over time, and a few sessions of therapy to break the anxiety cycle. Starting with one approach and layering on others based on results is a reasonable path. The key point is that ED is rarely something you just have to live with. For the vast majority of men, there is a treatment or combination of treatments that works.