Combination therapy has proven effective for some men who don’t respond adequately to oral medicines. The idea is to use two drugs with different mechanisms of action for better results. Commonly, sildenafil is used in combination with pellets of alprostadil (synthetic prostaglandin E1) that are inserted into the urethra (the tube in the penis that carries urine from the bladder to the outside of the body). Alprostadil also increases the blood supply to the penis, but by different means.
For many men, stopping smoking is an erectile dysfunction remedy, particularly when ED is the result of vascular disease, which occurs when blood supply to the penis becomes restricted because of blockage or narrowing of the arteries. Smoking and even smokeless tobacco can also cause the narrowing of important blood vessels and have the same negative impact. 
In some cases, however, these drugs may be unsuitable for patients with heart disease. If you are considering one of these drugs and you have heart disease, as many diabetics do, be sure to tell your doctor. In rare cases, the pills may create “priapism,” a prolonged and painful erection lasting six hours or more (although reversible with prompt medical attention).

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is sage, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
Rates of erectile dysfunction have significantly increased over the last 15 years, especially in men younger than 40. In 2002, a review of 23 studies from Europe, the United States, Asia and Australia found that the rate of erectile dysfunction in that age group was two per cent. More recent studies suggest that erectile dysfunction is becoming more prevalent in younger men, with as many as 15 per cent of men in that age group battling it.
Nonsustained erection with detumescence after penetration is most commonly caused by anxiety or the vascular steel syndrome. In the vascular steel syndrome, blood is diverted from the engorged corpora cavernosae to accommodate the oxygen requirements of the thrusting pelvis. Questions should be asked regarding the presence or absence of nocturnal or morning erections and the ability to masturbate. Complete loss of nocturnal erections and the ability to masturbate are signs of neurological or vascular disease. It is important to remember that sexual desire is not lost with ED—only the ability to act on those emotions.

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In the popular media, it’s easy to find claims of a rising “epidemic” of erectile dysfunction in young men. For example, this article argues that the rate of ED in young men has increased 1000% in the last decade alone—though, problematically, no research is cited to back it up, which makes this a very questionable claim. So what does the science say on this subject? Are erectile difficulties really rising at a dramatic rate in young guys? Let’s take a look.
Patients taking PDE5 inhibitors should avoid consuming large amounts of alcohol, which may cause a sudden decrease in blood pressure when getting up from a standing or reclining position. Although effects can be variable, symptoms may include a fast heart rate, dizziness, headache and fainting. Studies with some PDE5 inhibitors have shown a decrease in blood pressure and symptomatic effects when combined with alcohol.
THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.
The natural history of ED in people with diabetes is normally gradual and does not occur overnight. Both vascular and neurological mechanisms are most commonly involved in people with diabetes. Atherosclerosis in the penile and pudendal arteries limits the blood flow into the corpus cavernosum. Because of the loss of compliance in the cavernous trabeculae, the venous flow is also lost. This loss of flow results in the inability of the corpora cavernosae to expand and compress the outflow vessels.
A daily glass of wine, beer or single malt over dinner or after work with your buddies will not lead to erectile dysfunction (ED), inability to get or maintain an erection during sex. Overindulging, though, will short-circuit your sex life. Besides waking up with a major hangover, overdoing it will eventually lead to hardening of the arteries and cardiovascular disease, which interferes with blood flow to your  equation is simple: the less blood flow, the soft and skimpier the erection. Unless you can drink in moderation, avoid alcohol if you want to be at your best in bed.
Having your current medication checked – if you are taking medication already, it could be that your erection problems are a side effect. Have a doctor check whether this is the cause of your problems and if it is, you might be able to switch medications and then find that your erectile dysfunction goes away completely – or at least improves. Medications that can cause erection problems include:
"Sexual relations are not only an important part of people's wellbeing. From a clinical point of view, the inability of some men to perform sexually can also be linked to a range of other health problems, many of which can be debilitating or potentially fatal," says Professor Gary Wittert, Head of the Discipline of Medicine at the University of Adelaide and Director of the University's Freemasons Foundation Centre for Men's Health.
It's an all too common problem: Roughly half of men with diabetes—and up to 25 percent of men overall—experience erectile dysfunction (ED) at some point in their lives. And it's a complicated problem, too, with diverse physical origins and complex emotional ramifications. Yet diabetes-related ED needn't be a no-sex sentence for men. There are ways to avoid this disorder and to treat it at any age. While much of the research on ED is still in its infancy, here is what science has to say so far.

If you’re experiencing psychological ED, you may benefit from talk therapy. Therapy can help you manage your mental health. You’ll likely work with your therapist over several sessions, and your therapist will address things like major stress or anxiety factors, feelings around sex, or subconscious conflicts that could be affecting your sexual well-being.

With that said, the only data we’re going to focus on here are the results of large, nationally representative sex surveys because they offer the best source of information when it comes to trying to establish realistic prevalence rates and how they might have changed over time. Data from convenience samples of college students just aren’t reliable enough for these purposes.


The physical examination can reveal clues for physical causes of erectile dysfunction. A doctor will perform an assessment of BMI and waist circumference to evaluate for abdominal obesity. A genital examination is part of the evaluation of erectile dysfunction. The examination will focus on the penis and testes. The doctor will ask you about penile curvature and will examine the penis to see if there are any plaques (hard areas) palpable. The doctor will examine the testes to make sure they are in the proper location in the scrotum and are normal in size. Small testicles, lack of facial hair, and enlarged breasts (gynecomastia) can point to hormonal problems such as hypogonadism with low testosterone levels. A health care provider may check pulses in your groin and feet to determine if there is a suggestion of hardening of the arteries that could also affect the arteries to the penis.
Risks associated with injection therapy including bleeding, pain with injection, penile pain, priapism, and corporal fibrosis (scarring inside of the corpora cavernosa). There is also concern that repetitive injections in the same area could cause scar tissue to build up in the tunica albuginea that could create penile curvature. Thus, doctors recommended that one alternate sides with injection and perform injections no more frequent than every other day.
Neurologic illnesses leading to ED have been recently reviewed (64). The most common of them (i.e., consequences of prostatic surgery, stroke and Parkinson’s disease) are not typical of younger age and, similarly to conditions less common but more typical of younger men, such as spinal cord injury, multiple sclerosis and spina bifida, the clinical features of the underlying disease are clearly apparent, being ED one of the multiple manifestations, rather than a harbinger of a subtle condition. Diagnosis of neurologic origin of ED is often quite simple, based on medical history and physical exam. The clinical management is a multidimensional and coordinated work of rehabilitation and medical therapy, which includes ICI injection of vaso-relaxant drugs, vacuum device and surgery (64).

If you are taking medications (alpha-blockers) for problems with an enlarged prostate, you should discuss your prostate medications with your doctor. Alpha-blockers also can cause lowering of the blood pressure. Thus your doctor will need to carefully watch your blood pressure when you start the PDE5 inhibitor. Common alpha-blockers include doxazosin (Cardura), terazosin (Hytrin), and tamsulosin (Flomax).
Erections also require neural input to redirect blood flow into the corpora cavernosae. Psychogenic erections secondary to sexual images or auditory stimuli relay sensual input to the spinal cord at T-11 to L-2. Neural impulses flow to the pelvic vascular bed, redirecting blood flow into the corpora cavernosae. Reflex erections secondary to tactile stimulus to the penis or genital area activate a reflex arc with sacral roots at S2 to S4. Nocturnal erections occur during rapid-eye-movement (REM) sleep and occur 3–4 times nightly. Depressed men rarely experience REM sleep and therefore do not have nocturnal or early-morning erections.
“With the success of Viagra-type drugs, there has been a tendency to start all patients with ED on one of these drugs and not look much further for a medical cause. But we now know that ED may be an early warning for heart and blood vessel disease, so it is important to look for common risk factors. These include high blood pressure, diabetes, medications, smoking, drinking, and drugs,” said Dr. Wang.
Drinking in moderation can be beneficial to your heart health, and therefore your sex life. A 2004 study published in the journal Seminars in Vascular Medicine found moderate alcohol consumption was associated with decreased cardiovascular mortality due to the antioxidant capacities of alcoholic beverages. The polyphenolic compounds — a group of compounds that include tannins and anthocyanins — were shown to change the lipid profiles, decrease coagulation, increase fibrinolysis, inhibition of platelets, and increase nitric oxide. This is vital since vascular diseases (those that affect the blood vessels) commonly cause erectile dysfunction.
Though it's most common among older men, it's possible for young men to get erectile dysfunction. When young men develop ED, it's usually a result of psychological problems such as anxiety, stress, depression or relationship problems. However, physical problems such as diabetes, nerve problems, injury or other medical conditions may also lead to erectile dysfunction in younger men. If you're having frequent or ongoing trouble getting or keeping an erection long enough to have sex, talk to your doctor.

The improvement of both man and woman sexual function in couples whose male partner is treated with PDE5i has been further confirmed by randomized clinical trials (RCTs) comparing the effectiveness of PDE5i vs. placebo in improving couple sexual function (91-95). In a more recent RCT, the use of vardenafil 10 mg oral dispersible tablets has been compared to the use of the drug itself in association with cognitive behavioral sexual therapy (CBST) for 10 weeks in 30 couples with ED male partners, randomly assigned to one study arm (96). Results from this RCT showed that vardenafil is able to improve male sexual function, but this improvement is maintained only in patients receiving both vardenafil and CBST. Furthermore, female sexual function and satisfaction are enhanced only in the arm with vardenafil and CBST combined therapy, thus suggesting that a therapy healing the couple is more effective and has a longer-lasting efficacy than the use of a medication focusing only on ED.


Although ED and diabetes are two separate conditions, they tend to go hand in hand. Half of men with diabetes will experience ED within 10 years of their diagnosis.8 For some men, ED may be the first symptom of diabetes even if they have not yet been diagnosed, particularly in men younger than 45.6 Left untreated, ED can damage self-confidence and relationships.
Medications used in the treatment of other medical disorders may cause erectile dysfunction. If you think erectile dysfunction is caused by a medication, talk with your doctor about drugs that might not cause this side effect. Do not just stop taking a prescribed medication before talking with your health care provider. Common medications associated with erectile dysfunction are:
Excess alcohol causes erectile dysfunction in a variety of ways. Have one too many, and it decreases the production of NO in your penis, decreasing blood flow. It can even prevent the prescription pills from working. A little alcohol may get you aroused, but a lot actually blunts desire in your brain and can make it hard to reach climax as well. Over time excess alcohol damages the nerves to the penis that trigger an erection, and eventually, when the liver gets damaged, testosterone levels plummet. If you drink, practice moderation.
Aging, liver and kidney problems, and concurrent use of certain medications (such as erythromycin [an antibiotic] and protease inhibitors for HIV) slows the metabolism (breakdown) of sildenafil. Slowed breakdown allows sildenafil to accumulate in the body and potentially may increase the risk of side effects. Therefore, in men over 65 years of age, in men with significant kidney and liver disease, and in men who also are taking medications called protease inhibitors, the doctor will initiate sildenafil at a lower dose (25 mg) to avoid accumulation of sildenafil in the body. A protease inhibitor ritonavir (Norvir) is especially potent in increasing the accumulation of sildenafil, thus men who are taking Norvir should not take sildenafil doses higher than 25 mg and at a frequency of no greater than once in 48 hours. Other medications that may affect the level of sildenafil include erythromycin and ketoconazole.
Circulatory problems: An erection occurs when the penis fills with blood and a valve at the base of the penis traps it. Diabetes, high blood pressure, cholesterol, clots, and atherosclerosis (hardening of the arteries) can all interfere with this process. Such circulatory problems are the number one cause of erectile dysfunction. Frequently, erectile dysfunction is the first noticeable symptom of cardiovascular disease.
Erectile dysfunction can occur as a side effect of medication taken for another health condition. Common culprits are high blood pressure meds, antidepressants, some diuretics, beta-blockers, heart medication, cholesterol meds, antipsychotic drugs, hormone drugs, corticosteroids, chemotherapy, and medication for male pattern baldness, among others.
You’ve probably heard of Viagra, but it’s not the only pill for ED. This class of drugs also includes Cialis, Levitra,  Staxyn, and Stendra. All work by improving blood flow to the penis during arousal. They're generally taken 30-60 minutes before sexual activity and should not be used more than once a day. Cialis can be taken up to 36 hours before sexual activity and also comes in a lower, daily dose. Staxyn dissolves in the mouth. All require an OK from your doctor first for safety.

Intraurethral alprostadil (Muse) provides a less invasive alternative to intrapenile injection. It is a pellet that is inserted 5–10 min before intercourse, and its effects last for 1 h. The response rate is ∼50–60%. It can be used twice daily but is not recommended for use with pregnant partners. Complications of priapism and penile fibrosis are less common than after alprostadil given by penile injection. The cost is ∼$18–24 per treatment.
In patients with low testosterone, testosterone treatment can improve libido and erectile dysfunction, but many men still may need additional oral medications such as sildenafil, vardenafil, or tadalafil. Some studies suggest that men with ED and low testosterone may respond better to PDE5 inhibitors when given testosterone therapy; however, this is controversial.

Though psychological causes of erectile dysfunction may be more complex than medical causes, they are still treatable. You should know, however, that resolving psychological impotence may not be quite as simple as taking Viagra (sildenafil citrate). ED drugs are designed to sidestep the physiological causes for ED such as low blood pressure or vascular damage – they won’t help you with issues of anxiety, stress, or low self-esteem. The best treatment for psychological ED will address the problem at its root.


Multiple authors have demonstrated that anxiety, depression, and stress clearly produce major neurochemical and neuroendocrine changes in the brain (10,11). Changes in neurobiology would be expected to contribute to impaired erectile function. Stress and anxiety lead to increased epinephrine production, and heightened sympathetic tone leads to exaggerated cavernosal smooth muscle contraction, inability of smooth muscle to relax, and subsequent erectile dysfunction (6,7). Failure to achieve a fully rigid erection may aggravate performance anxiety leading to a vicious cycle.

If not properly controlled, both type 1 and type 2 diabetes can cause complications due to high blood sugar levels. Over time, these high levels can cause irreversible nerve damage and narrow your blood vessels. While nerve damage may affect the sensitivity of your penis, blood vessel damage can affect the blood flow to your penis and make it more difficult for you to get an erection.
The vacuum constriction device consists of a vacuum cylinder, various sizes of tension rings, and a vacuum pump, either hand-operated or electric. The penis is placed in a cylinder to which a tension ring is attached. Air is evacuated from the cylinder by means of the pump, creating a vacuum, which produces the erection. The cylinder is removed, leaving the tension ring at the base of the penis to maintain the erection.
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