Erectile dysfunction is treatable at every severity level, and most men see improvement with first-line options like oral medication, exercise, or both. The right approach depends on what’s causing the problem, which can range from blood flow issues and low hormones to stress, depression, or a combination. Here’s what actually works, how the options compare, and what to expect from each.
Why the Cause Matters for Treatment
ED isn’t a single condition with a single fix. In most men over 40, the root cause is vascular: the blood vessels that supply the penis aren’t dilating properly, often for the same reasons that lead to heart disease. In fact, ED typically shows up two to five years before symptomatic coronary artery disease, making it one of the earliest warning signs of cardiovascular trouble. That connection is worth taking seriously, because treating the underlying vascular problem (high blood pressure, high cholesterol, diabetes) can improve erections and protect your heart at the same time.
In younger men, the cause is more often psychological: performance anxiety, relationship stress, or depression. And for a significant number of men at any age, it’s a mix of physical and mental factors feeding off each other. A doctor can usually sort this out with a medical history, blood work, and a few targeted questions.
Exercise and Weight Loss
Aerobic exercise is one of the most effective non-drug treatments for ED, and it’s backed by strong evidence. A meta-analysis of randomized controlled trials published in The Journal of Sexual Medicine found that aerobic exercise improved erectile function scores by an average of 2.8 points on the standard clinical scale. That improvement was even larger for men with worse symptoms: those with severe ED gained nearly 5 points, while men with moderate ED gained about 3.3 points.
The type of exercise matters less than the consistency. Walking, jogging, cycling, and swimming all qualify. Most studies showing benefit used moderate-intensity exercise (enough to raise your heart rate and make conversation slightly difficult) for about 150 minutes per week. Weight loss itself also helps, particularly for men who are obese, because excess body fat lowers testosterone and damages blood vessel function. For men with mild ED and a sedentary lifestyle, exercise alone can sometimes resolve the problem entirely.
Oral Medications
The most widely prescribed ED treatments are a class of drugs that work by relaxing blood vessels in the penis, making it easier to get and maintain an erection with sexual stimulation. Three are commonly used, and they differ mainly in how fast they work and how long they last.
Sildenafil (Viagra) is the most well-known. It’s typically taken about an hour before sex, reaches peak effect at around 60 minutes, and lasts roughly four hours. The starting dose is 50 mg, which can be adjusted up to 100 mg or down to 25 mg depending on how you respond.
Vardenafil (Levitra) has a similar profile: 60 minutes to peak effect, four to five hours of duration, and a starting dose of 10 mg. It’s sometimes preferred by men who experience side effects with sildenafil, though the two are closely related.
Tadalafil (Cialis) is the outlier. It takes about two hours to reach full effect, but it stays active for roughly 17.5 hours, which is why it’s sometimes called the “weekend pill.” That longer window means less pressure to time the dose precisely. Tadalafil can also be taken daily at a low dose, which keeps a steady level in your system and eliminates the need to plan around a pill.
All three cause similar side effects in some men: headache, flushing, nasal congestion, and occasionally visual changes. They should not be combined with nitrate medications (commonly prescribed for chest pain), because the interaction can cause a dangerous drop in blood pressure.
Testosterone Replacement
Low testosterone is a contributing factor in some cases of ED, but not most. The American Urological Association defines low testosterone as a total level below 300 ng/dL, confirmed by two separate blood draws taken in the early morning, when levels are highest. Both low levels and symptoms (fatigue, reduced sex drive, difficulty with erections) need to be present before treatment is appropriate.
If your testosterone is genuinely low, replacement therapy through gels, patches, or injections can improve libido and erection quality. But if your levels are normal, adding testosterone won’t help your erections and carries unnecessary risks. This is one area where blood work gives a clear answer.
Therapy for Psychological ED
When ED is driven by anxiety, depression, or relationship problems, medication alone often falls short because it doesn’t address the cycle of worry and avoidance that keeps the problem going. Cognitive behavioral therapy (CBT) targets the thought patterns that fuel performance anxiety, helping men reframe negative beliefs about sex and rebuild confidence. Studies have shown that structured counseling improves sexual confidence and can also increase willingness to use medical treatments when needed, making it a useful complement to medication rather than a replacement.
Couples therapy is particularly helpful when ED has created tension or distance in a relationship. Sex therapy techniques like sensate focus, which involves gradual, pressure-free physical intimacy exercises, can break the performance cycle and restore a sense of connection. For many men, combining a short course of medication (to rebuild confidence) with therapy (to address the underlying anxiety) produces the best long-term results.
Vacuum Erection Devices
A vacuum device is a plastic cylinder that fits over the penis and uses a hand pump to draw blood in, creating an erection mechanically. A soft constriction ring then slides to the base of the penis to hold the blood in place during sex. These devices work regardless of the cause of ED and don’t require medication, which makes them appealing for men who can’t take oral drugs or prefer to avoid them.
The key safety rule: the constriction ring should stay on for no more than 30 minutes. Leaving it longer can cut off blood supply and cause serious injury. Vacuum devices are generally safe, but men with bleeding disorders like sickle cell disease or hemophilia, or those taking blood thinners, should talk with a doctor before using one. The erection feels slightly different from a natural one (cooler to the touch, and the penis may pivot at the base), but most couples adapt quickly.
Penile Injections
For men who don’t respond to oral medications, injections directly into the side of the penis are a well-established next step. The medication (a compound that relaxes smooth muscle and increases blood flow) produces an erection within 5 to 15 minutes that typically lasts 30 to 60 minutes, regardless of arousal. The needle is very small, and most men report that the discomfort is minimal after the first few uses.
The main risk is priapism, an erection lasting longer than four hours that requires emergency treatment to prevent permanent damage. This is rare when the dose is properly calibrated, which is why the first injection is always done in a doctor’s office to find the right amount. Men with a history of priapism are at higher risk and may not be good candidates.
Penile Implants
Surgery is typically reserved for men who haven’t responded to other treatments. A penile implant (prosthesis) is a device surgically placed inside the penis that allows you to produce an erection on demand. Two types exist: malleable rods that keep the penis semi-rigid and can be positioned up or down, and inflatable devices that use a small pump (hidden in the scrotum) to fill cylinders with fluid for a more natural-feeling erection.
Satisfaction rates are high for both types, but significantly higher for the three-piece inflatable implant. In a study of 883 men, only 0.2% of those with a three-piece inflatable switched to a different type, while 7.7% of men with malleable implants eventually upgraded to a three-piece device. The inflatable version looks and feels more natural, which explains the preference. Recovery takes four to six weeks, and the implant is entirely concealed inside the body.
Shockwave Therapy
Low-intensity shockwave therapy uses acoustic waves applied to the penis, with the goal of stimulating new blood vessel growth and improving blood flow. It’s widely marketed at men’s health clinics, but the evidence is still mixed. The European Association of Urology offers a weak recommendation for it in specific cases: men with mild vascular ED who either don’t want oral medication or don’t respond well to it. The Canadian Urological Association recommends against it, citing low-quality evidence. If you’re considering it, know that it’s not a proven first-line treatment and is rarely covered by insurance.
Supplements
The supplement market for ED is enormous, but very little of it is backed by rigorous evidence. The combination with the most research behind it is L-arginine (an amino acid that helps produce nitric oxide, the molecule that relaxes blood vessels) paired with yohimbine (derived from tree bark). In a randomized controlled trial, the combination produced a statistically significant improvement in erectile function compared to placebo, but the benefit was concentrated in men with mild to moderate ED. Men with severe ED saw little difference.
Yohimbine can raise blood pressure and heart rate, so it’s not risk-free. And supplements in general are poorly regulated, meaning the dose on the label may not match what’s in the bottle. If you want to try a supplement, treat it as a complement to the proven strategies above, not a substitute.
Putting a Treatment Plan Together
Most doctors follow a stepwise approach. Lifestyle changes (exercise, weight loss, quitting smoking, reducing alcohol) come first or alongside other treatments because they address root causes. Oral medication is the standard first-line drug therapy. If that doesn’t work, injections or vacuum devices are the next tier. Implants are the final option, reserved for when nothing else has succeeded.
The reality is that many men benefit from combining approaches. Exercise plus medication works better than either alone. Therapy plus medication works better for psychological ED than medication alone. And because ED is often an early signal of cardiovascular disease, getting it checked out does more than fix one symptom. It can change the trajectory of your overall health.