Is ED a normal part of aging?

Some change in erectile function with age is common, but persistent ED is not normal and is not something to accept silently. It is treatable at any age, and treating it tends to improve quality of life and uncover underlying conditions worth addressing.

How quickly does sildenafil work?

About 30 to 60 minutes after taking it, with a window of effectiveness of roughly 4 hours. A heavy fatty meal can delay onset by 30 to 60 minutes. Many men get better results on an empty or light-meal stomach.

What is the difference between Cialis daily and Cialis as-needed?

The daily dose (2.5 or 5 mg) keeps a steady level in the body, so erections can happen with normal arousal without timing a pill. The as-needed dose (10 or 20 mg) is taken before activity for a 24 to 36 hour window. Many men prefer the daily for the spontaneity, especially in established relationships.

Are PDE5 inhibitors safe long-term?

In men without specific contraindications (nitrate medications for heart disease, severe cardiovascular disease, certain visual disorders), the long-term safety profile is well-established. Side effects (headache, facial flushing, nasal congestion, occasional mild visual changes, indigestion) are typically mild and tolerable.

Can PDE5 inhibitors be combined with TRT?

Yes, often. Many men with both low T and vascular ED do best with combined treatment: TRT to address the hormonal piece, PDE5 inhibitor to address the vascular piece, and lifestyle work for both. We monitor the lab work and adjust over time.

Will improving my fitness fix ED?

For mild to moderate ED with a meaningful vascular and metabolic component, fitness improvements (especially cardio plus strength, alongside better sleep and alcohol moderation) often produce measurable improvement in 8 to 12 weeks. For severe organic ED, fitness helps the substrate but rarely substitutes for medication entirely.

Is shockwave therapy worth doing?

Low-intensity extracorporeal shockwave therapy has growing but inconsistent evidence for vascular ED. Some studies show modest benefit; others show none. Costs are typically high and not covered by insurance. We discuss it honestly when patients ask. It is not a first move in our practice.

What about the supplements I see online?

Most "ED supplements" are either ineffective, contaminated with undisclosed PDE5 inhibitors (a real problem the FDA has documented multiple times), or both. The FDA-approved medications are inexpensive, well-studied, and dispensed through licensed pharmacies. We do not endorse OTC supplements as ED treatment.

Can ED be the first sign of diabetes?

Yes. ED can predate a diabetes diagnosis by years because the small penile arteries are damaged before larger vascular changes show up. This is one of the reasons we always check HbA1c and fasting insulin during the workup.

How does sleep apnea connect to ED?

Untreated obstructive sleep apnea fragments sleep, suppresses overnight testosterone production, and worsens endothelial function and blood pressure. Treating OSA with CPAP often improves ED measurably over a few months. We screen and refer for sleep study when the picture fits.

When do you actually need a urology referral?

When PDE5 inhibitors plus optimization of the underlying causes (TRT, blood pressure, glycemic control, sleep) have not produced enough improvement, when the picture suggests Peyronie's disease (curvature, palpable plaque), when there is significant venous leak suspected on history, or when the conversation moves toward implant surgery. We refer early when the picture warrants it.

What is the deal with the testosterone-ED relationship?

Low testosterone does not usually cause vascular ED on its own, but it lowers libido and reduces the responsiveness of erectile tissue to nitric oxide signaling. Many men with both low T and ED need both treated; treating only one often leaves the other partially fixed.

How do I know if my ED is vascular versus psychological?

The morning erection question is the most useful single screen. Vascular ED tends to be progressive, present across situations, and worsen over years. Psychological ED tends to be situational (worse with anxiety, new partner, performance pressure), often spares morning erections, and can be intermittent. Most men have some of both, and the workup helps clarify the dominant driver.

Does ejaculation health get its own treatment conversation?

Yes. Erectile function, libido, and ejaculation are three different things that often get bundled together. Ejaculation-specific concerns (delayed ejaculation, anorgasmia, premature ejaculation, retrograde ejaculation) have their own workups and treatments. The [Premature Ejaculation in Men](/symptoms/premature-ejaculation) article covers the PE piece directly.

What is the evidence on shockwave therapy in 2026?

Studies show variable benefit, ranging from no effect to modest improvement in mild to moderate vascular ED. The protocols vary widely across studies, which makes the literature hard to compare. Major urology societies have not endorsed it as first-line care. It remains a "discuss with informed consent" intervention rather than a routine recommendation.

Is there a connection between ED and depression?

Yes, bidirectional. ED can drive depression and anxiety. Depression and the medications that treat it (especially SSRIs) can drive ED. The treatment conversation often spans both. SSRIs that tend to be less sexually disruptive (bupropion, mirtazapine) are sometimes considered when ED on an SSRI is a major issue. We coordinate with mental health providers when appropriate.

Is ED a normal part of aging?

Some change in erectile function with age is common, but persistent ED is not normal and is not something to accept silently. It is treatable at any age, and treating it tends to improve quality of life and uncover underlying conditions worth addressing.

How quickly does sildenafil work?

About 30 to 60 minutes after taking it, with a window of effectiveness of roughly 4 hours. A heavy fatty meal can delay onset by 30 to 60 minutes. Many men get better results on an empty or light-meal stomach.

What is the difference between Cialis daily and Cialis as-needed?

The daily dose (2.5 or 5 mg) keeps a steady level in the body, so erections can happen with normal arousal without timing a pill. The as-needed dose (10 or 20 mg) is taken before activity for a 24 to 36 hour window. Many men prefer the daily for the spontaneity, especially in established relationships.

Are PDE5 inhibitors safe long-term?

In men without specific contraindications (nitrate medications for heart disease, severe cardiovascular disease, certain visual disorders), the long-term safety profile is well-established. Side effects (headache, facial flushing, nasal congestion, occasional mild visual changes, indigestion) are typically mild and tolerable.

Can PDE5 inhibitors be combined with TRT?

Yes, often. Many men with both low T and vascular ED do best with combined treatment: TRT to address the hormonal piece, PDE5 inhibitor to address the vascular piece, and lifestyle work for both. We monitor the lab work and adjust over time.

Will improving my fitness fix ED?

For mild to moderate ED with a meaningful vascular and metabolic component, fitness improvements (especially cardio plus strength, alongside better sleep and alcohol moderation) often produce measurable improvement in 8 to 12 weeks. For severe organic ED, fitness helps the substrate but rarely substitutes for medication entirely.

Is shockwave therapy worth doing?

Low-intensity extracorporeal shockwave therapy has growing but inconsistent evidence for vascular ED. Some studies show modest benefit; others show none. Costs are typically high and not covered by insurance. We discuss it honestly when patients ask. It is not a first move in our practice.

What about the supplements I see online?

Most "ED supplements" are either ineffective, contaminated with undisclosed PDE5 inhibitors (a real problem the FDA has documented multiple times), or both. The FDA-approved medications are inexpensive, well-studied, and dispensed through licensed pharmacies. We do not endorse OTC supplements as ED treatment.

Can ED be the first sign of diabetes?

Yes. ED can predate a diabetes diagnosis by years because the small penile arteries are damaged before larger vascular changes show up. This is one of the reasons we always check HbA1c and fasting insulin during the workup.

How does sleep apnea connect to ED?

Untreated obstructive sleep apnea fragments sleep, suppresses overnight testosterone production, and worsens endothelial function and blood pressure. Treating OSA with CPAP often improves ED measurably over a few months. We screen and refer for sleep study when the picture fits.

When do you actually need a urology referral?

When PDE5 inhibitors plus optimization of the underlying causes (TRT, blood pressure, glycemic control, sleep) have not produced enough improvement, when the picture suggests Peyronie's disease (curvature, palpable plaque), when there is significant venous leak suspected on history, or when the conversation moves toward implant surgery. We refer early when the picture warrants it.

What is the deal with the testosterone-ED relationship?

Low testosterone does not usually cause vascular ED on its own, but it lowers libido and reduces the responsiveness of erectile tissue to nitric oxide signaling. Many men with both low T and ED need both treated; treating only one often leaves the other partially fixed.

How do I know if my ED is vascular versus psychological?

The morning erection question is the most useful single screen. Vascular ED tends to be progressive, present across situations, and worsen over years. Psychological ED tends to be situational (worse with anxiety, new partner, performance pressure), often spares morning erections, and can be intermittent. Most men have some of both, and the workup helps clarify the dominant driver.

Does ejaculation health get its own treatment conversation?

Yes. Erectile function, libido, and ejaculation are three different things that often get bundled together. Ejaculation-specific concerns (delayed ejaculation, anorgasmia, premature ejaculation, retrograde ejaculation) have their own workups and treatments. The [Premature Ejaculation in Men](/symptoms/premature-ejaculation) article covers the PE piece directly.

What is the evidence on shockwave therapy in 2026?

Studies show variable benefit, ranging from no effect to modest improvement in mild to moderate vascular ED. The protocols vary widely across studies, which makes the literature hard to compare. Major urology societies have not endorsed it as first-line care. It remains a "discuss with informed consent" intervention rather than a routine recommendation.

Is there a connection between ED and depression?

Yes, bidirectional. ED can drive depression and anxiety. Depression and the medications that treat it (especially SSRIs) can drive ED. The treatment conversation often spans both. SSRIs that tend to be less sexually disruptive (bupropion, mirtazapine) are sometimes considered when ED on an SSRI is a major issue. We coordinate with mental health providers when appropriate.

TL;DR · 30-second take

Erectile dysfunction is common, treatable, and often the earliest sign of vascular disease. The thoughtful approach: get the workup (testosterone, lipids, glucose, blood pressure), use FDA-approved PDE5 inhibitors (sildenafil, tadalafil, vardenafil, avanafil) as the first-line treatment, address the underlying cardiovascular risk in parallel, and look at sleep, stress, alcohol, and relationship factors that often layer in.

Erectile Dysfunction in Men: The Workup, the Treatments, the Honest Conversation

TL;DR: ED is common (about 40% of men by 40, 70% by 70), treatable, and often the earliest warning sign of cardiovascular disease. The right approach pairs FDA-approved PDE5 inhibitors with a real workup for the vascular, hormonal, sleep, and psychological factors actually driving it. Most men get a prescription without the workup. We do both.

Most men I see for ED have been carrying it quietly for two or three years before they bring it up. The shame, the assumption that "this is just aging," the not wanting to make a thing of it. None of that is necessary. ED is common. ED is treatable. And ED is often the body telling you something about your cardiovascular health that you would want to know early. Lets walk through whats happening, what actually helps, and how to decide on the right path for your situation.

How an erection actually works

A useful frame, because the treatments make more sense once the mechanism is clear. An erection is a vascular event coordinated by the nervous system. Arousal triggers nerves in the pelvis to release nitric oxide, which signals the smooth muscle in the penile arteries to relax. The arteries open, blood floods in, and the veins compress against the surrounding tissue to keep the blood in place. Sustained erection requires:

Working nerves (so the signal gets through)
Working arteries and endothelium (so the relaxation happens and blood flows in)
Working venous trapping (so blood doesnt leak right back out)
Adequate hormonal signaling (testosterone supports the whole cycle)
A nervous system not in fight-or-flight mode (anxiety is a potent vasoconstrictor)

ED can come from a problem in any one of those layers, and often it is a few layered together.

The cardiovascular warning angle

The arteries that supply the penis are small (roughly 1 to 2 mm wide). The arteries that supply the heart are larger (3 to 4 mm). Plaque builds up in the small pipes first. Which means ED is often the earliest visible sign that the cardiovascular system has started to age faster than the rest of you. We cover this in detail on the Erectile Dysfunction and Cardiovascular Risk page; the short version is that organic ED in your 40s is a strong predictor of heart events in your 50s, and treating ED without checking the heart is a missed opportunity. This is also why we do not just prescribe a PDE5 inhibitor and send you home. The pill helps the symptom; the underlying biology still needs attention.

The morning erection question

The single most useful clinical question we ask about ED is "do you still wake up with erections, even occasionally?"

Yes, regularly. The hardware works. The driver is more likely psychological, relational, situational, or hormonal modulation rather than fixed vascular disease.
Sometimes. Mixed picture. Worth a full workup.
No, almost never anymore. Suggests organic ED. The vascular, neurogenic, or hormonal cause needs to be characterized.

This single question often saves a lot of unnecessary anxiety and points the workup in the right direction.

The workup

Most men get a prescription on the first visit without anyone running labs. We run labs.

Total and free testosterone, SHBG, estradiol. Drawn between 7 and 10 am, fasting. Repeat once before confirming low T, because the day-to-day variation is real.
LH and FSH if testosterone is low, to clarify primary (testicular) versus secondary (pituitary) causes.
Prolactin if testosterone is low, libido is markedly down, or there are headaches or vision changes that could point to a pituitary issue.
HbA1c and fasting insulin. Diabetes and insulin resistance are major drivers of vascular ED.
Lipid panel with ApoB. Standard cholesterol screening plus the particle count that more directly reflects cardiovascular risk.
TSH. Both directions of thyroid dysfunction can affect libido and erectile function.
CBC and CMP as a general screen.
Vitamin D, ferritin when the broader picture suggests they matter.

If the morning erection answer is "almost never," vascular risk factors are present, or family history is concerning, we also discuss:

Coronary artery calcium (CAC) score as a low-radiation screen for plaque burden.
Carotid intima-media thickness or coronary CTA when the picture warrants it.

For some men, the ED conversation becomes the entry point to actually catching cardiovascular disease while it is still preventable.

The FDA-approved medications

The four PDE5 inhibitors all work through the same mechanism (they amplify the nitric oxide signaling pathway), and each has a slightly different profile.

Sildenafil (Viagra)

The original. Dose range 25 to 100 mg, taken 30 to 60 minutes before sexual activity. Half-life roughly 4 hours, so the window is about 4 to 6 hours. Best on an empty or light-meal stomach; a heavy fatty meal delays absorption. Inexpensive as a generic.

Tadalafil (Cialis)

Distinct in two ways. First, the half-life is much longer (about 17.5 hours), giving a 24 to 36 hour window of effectiveness from a single dose. Second, it can be taken as a low daily dose (2.5 to 5 mg) for continuous effect, which many men prefer because it removes the timing question entirely and produces more spontaneous erections. The daily-dose strategy also has a side benefit for benign prostatic hyperplasia (BPH) symptoms, which is why some urologists prescribe it for men with both. Food does not affect absorption.

Vardenafil (Levitra)

Similar profile to sildenafil with a slightly different side-effect distribution. Half-life around 4 to 5 hours. Less commonly prescribed today because the generic landscape has favored sildenafil and tadalafil.

Avanafil (Stendra)

Faster onset (about 15 to 30 minutes) and a more selective receptor profile. Useful for men who get nasal congestion or visual side effects from sildenafil or tadalafil. Currently the most expensive of the four.

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In our practice, the most common starting protocols are sildenafil 50 mg as-needed or tadalafil 5 mg daily. We adjust based on response, side effects, and timing preferences. All four are FDA-approved, all four are prescribed through licensed US pharmacies, and the cost has come down dramatically with generics.

When PDE5 alone is not enough

Roughly 70% of men respond well to a PDE5 inhibitor. For the rest, the next steps depend on what the workup showed.

Optimize what's optimizable first

Testosterone replacement if labs confirmed low T with appropriate clinical context. TRT alone does not usually fix vascular ED, but it improves libido and the response to PDE5 inhibitors.
Sleep apnea treatment when the apnea picture fits. Untreated OSA suppresses testosterone and impairs vascular function.
Blood pressure and lipid management. Treating the underlying vascular disease improves the substrate for everything else.
Diabetes management. Tightening glycemic control improves vascular function over months to years.

Intracavernosal injection therapy

Self-injection of alprostadil (or a tri-mix combination) directly into the corpus cavernosum. Effective in the vast majority of men, including those who fail PDE5 inhibitors. Requires a comfortable conversation, careful titration, and dose calibration in a urology office; we coordinate the referral.

Vacuum erection devices

A mechanical pump that pulls blood into the penis, paired with a constriction ring to keep it there. Non-pharmacologic, low-cost after the initial device purchase, useful as a primary tool or as an adjunct.

Penile implant surgery

The definitive option for men with severe organic ED who have failed medical management. A urology specialty procedure. Outcomes are generally good and satisfaction is high in well-selected patients. We refer to urology when this is the right next step.

What we do not prescribe

A few categories you may see online that we do not provide:

Compounded "research-grade" peptides marketed for ED (PT-141 / bremelanotide for men, melanotan, kisspeptin). Bremelanotide has a narrow FDA-approved indication in premenopausal women only; it is not approved for ED in men. State medical boards prohibit physician prescribing of non-FDA-approved peptides regardless of how a clinic frames them.
"Compounded sildenafil/tadalafil troches" and proprietary blends sold by DTC platforms outside the licensed-US-pharmacy framework. The FDA-approved generic medications are inexpensive, reliable, and dispensed through your local pharmacy on a normal prescription.
Stem cell, PRP, or shockwave clinic offerings for ED. The evidence is mixed to weak, the costs are very high, and the regulatory environment is loose. We discuss the data honestly when patients ask and we do not push them as a first move.

The psychological and relational layer

ED is rarely 100% physical or 100% psychological. Even when the original driver is vascular, anxiety builds on top of the physical issue and creates a feedback loop. A few practical principles:

Anxiety-driven ED often presents with intact morning erections, normal labs, and a clear situational pattern (worse with new partner, better in established relationship). PDE5 inhibitors can break the anxiety cycle by removing the variable while the underlying confidence rebuilds.
Relationship strain changes erectile function in ways that medicine cannot fully address. We acknowledge it directly when its part of the picture.
Pornography and arousal calibration. Many younger men present with situational ED tied to a mismatch between the intensity of internet pornography use and partnered sexual experience. We discuss it without moralizing and offer practical adjustments.
Therapy referral. When the psychological layer is dominant, sex therapy or general therapy is the right tool. We coordinate.

The lifestyle layer

The same levers that drive cardiovascular health drive erectile function. Improving any of them tends to improve the other.

Sleep. Untreated sleep apnea is one of the most under-recognized causes of low testosterone and vascular ED. We screen and treat directly when its present.
Aerobic and resistance training. Improves endothelial function, reduces insulin resistance, supports testosterone. Three to four sessions a week of mixed cardio and strength is a meaningful intervention on its own.
Alcohol. Acute alcohol impairs erections (the "whiskey dick" effect is real and biological). Chronic heavy use reduces testosterone and worsens vascular function. We dont moralize about it; we look at the numbers.
Smoking and vaping. Strongly associated with vascular ED through endothelial dysfunction. Worth stopping for many reasons; this is one.
Body composition. Higher visceral fat increases aromatization of testosterone to estradiol, worsening the hormonal picture. Improving body composition often improves ED measurably.

Guidance from the clinic

"Most men show up for ED already convinced its just aging. Two-thirds of the time, theres a treatable driver underneath, and the conversation about ED becomes the conversation about cardiovascular health, sleep, and the things you actually have leverage on for the next 20 or 30 years."

Actionable Steps in Philly

A practical plan for the next 30 days.

Answer the morning-erection question honestly. Yes regularly, sometimes, or almost never. The answer points the workup in the right direction.
Get the labs. Morning testosterone (total and free), SHBG, estradiol, LH, FSH, prolactin if T is low, HbA1c, fasting insulin, lipid panel with ApoB, TSH, CBC, CMP. If labs are old, get fresh ones.
Discuss the right PDE5 inhibitor. Tadalafil daily or as-needed if you want flexibility. Sildenafil as-needed if you want the inexpensive generic. Avanafil if youve had side effects on the others.
Address the cardiovascular angle in parallel. If your ApoB or CAC is concerning, that gets its own treatment plan. The pill helps the symptom; the artery work is what extends your runway.
Address the obvious lifestyle drivers. Sleep apnea screen if you snore or are sleepy during the day. Honest look at alcohol, training volume, and body composition.

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Scientific References

Goldstein I, et al. "Oral Sildenafil in the Treatment of Erectile Dysfunction." N Engl J Med. 1998.
Porst H, et al. "Efficacy and Tolerability of Tadalafil Once Daily in Men with Erectile Dysfunction." Eur Urol. 2006.
Inman BA, et al. "A Population-Based, Longitudinal Study of Erectile Dysfunction and Future Coronary Artery Disease." Mayo Clin Proc. 2009.
Vlachopoulos C, et al. "Prediction of Cardiovascular Events and All-Cause Mortality with Erectile Dysfunction: A Systematic Review and Meta-Analysis." Circ Cardiovasc Qual Outcomes. 2013.
Hatzimouratidis K, et al. "Pharmacotherapy for Erectile Dysfunction: Recommendations from the Fourth International Consultation for Sexual Medicine (ICSM 2015)." J Sex Med. 2016.

Fishtown Medicine | Symptoms

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

Medical Disclaimer: This resource provides clinical context for educational purposes. In the world of Precision Medicine, there is no "one size fits all"; the right treatment plan must be matched to your unique lab work, physiology, and goals. Consult Dr. Ash to determine if this approach is right for you, especially if you have chronic health conditions or are taking prescription medications.

Frequently Asked Questions

Common Questions

Deep-Dive Questions

When sexual stimulation triggers nitric oxide release, it activates an enzyme that produces cyclic GMP, which causes smooth muscle relaxation and increased blood flow. Phosphodiesterase type 5 (PDE5) breaks down cyclic GMP. PDE5 inhibitors block that breakdown, allowing cyclic GMP to accumulate and prolong the smooth muscle relaxation. They do not create an erection on their own; they amplify the normal physiological response to arousal.

A condition where scar tissue forms in the tunica albuginea (the fibrous sheath around the corpora cavernosa), causing curvature and sometimes pain or shortening. It can coexist with ED and sometimes mimics it. Diagnosis is clinical with confirmatory imaging when needed; treatment options range from oral therapy to intralesional injections (collagenase) to surgical correction. We refer to urology when the picture fits.

Some can, particularly older beta-blockers (atenolol, metoprolol) and thiazide diuretics at high doses. Newer ARBs (losartan, telmisartan) generally do not worsen ED and may actually improve it. Statins, despite the internet rumors, generally do not cause ED in well-conducted studies; for some men they may help by reducing vascular inflammation. When ED tracks closely with a medication change, we revisit the regimen.

Without judgment, and with practical clinical framing. Some younger men present with situational ED tied to high-frequency, high-intensity internet pornography use and a corresponding mismatch with partnered sex. The conversation focuses on calibration and the neuroscience of arousal habituation, not moralizing about the medium. Many men benefit from a structured break paired with a PDE5 inhibitor for the partnered context while the calibration shifts.

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