Erectile dysfunction and its treatments, explained plainly.
Straight, research-backed answers on men's sexual health: how ED medications work, sildenafil vs tadalafil, what treatment costs, and how to start online. How we verify
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Explore the evidence
Guides filed by the medication they cover and the question they answer.
By substance
Sildenafil
ED treatment options
Tadalafil
Peyronie's disease
ED lifestyle factors
ED supplements
penile implant
alprostadil
avanafil
ED evaluation
ED treatment
ginseng supplements
Penile fracture
Penile prosthesis
Premature ejaculation
premature ejaculation treatment
PT-141 (bremelanotide)
Shockwave, PRP and stem cell therapy for ED
tainted sexual enhancement products
topical ED products
vacuum erection device
vardenafil
By goal
- Understanding EDWhat erectile dysfunction is, how erections work, and how to tell a one-off from a pattern worth checking.
- ED MedicationsHow sildenafil, tadalafil, vardenafil and avanafil work and compare: side effects, interactions, generics and what the labels say.
- Causes and ConditionsWhat can cause ED and what it can signal about your health: heart, diabetes, nerves, hormones, sleep and the medicines that affect erections.
- Treatments Beyond PillsED treatments other than pills: vacuum devices, injections and suppositories, penile implants, and the therapies that are still experimental.
- Age and Life StageHow common ED is at each age, what tends to drive it in your 20s through your 60s and beyond, and why age alone is not the cause.
- Lifestyle and Natural ApproachesWhat exercise, diet, weight, smoking and cannabis have to do with ED, and what the evidence says about supplements.
- Mind and RelationshipsPerformance anxiety, stress, mood and relationships: how they relate to ED, and how counseling and conversation can help.
- SafetyED medicine safety: emergency signs, dangerous combinations such as nitrates, and how to spot fake, tainted and unapproved products.
- Getting CareWhen to see a doctor about ED, what the visit and tests involve, how online care works, and what treatment costs.
- Related ConditionsConditions that sit next to ED: Peyronie's disease, premature ejaculation, low libido and low testosterone.
- Myths and EvidenceCommon claims about ED and its treatments, checked against the labels, NIDDK, FDA and published research.
Latest
Are Generic ED Medications Safe? How to Tell a Real Generic From a Fake
Generic Viagra (sildenafil) and Cialis (tadalafil) are FDA-approved and bioequivalent. How to tell a legal generic from a counterfeit or scam seller.
Conditions often blamed for ED, and what the evidence shows
Can COVID cause erectile dysfunction? What studies show about COVID-19, hernia repair, Parkinson's, epilepsy, anemia and dehydration, and their limits.
Does Viagra (sildenafil) expire, and does an old pill still work?
Yes, Viagra and generic sildenafil expire. What the date on the bottle means, how to store tablets, and whether old or expired pills still work.
ED creams and gels: what is approved, and what is not
Which ED creams and gels regulators have approved: the Eroxon device gel, alprostadil cream in the UK and Europe, and why sildenafil cream is not FDA-approved.
Do ED drugs lower Alzheimer's risk? What the studies can and cannot show
Headlines linked sildenafil to fewer Alzheimer's diagnoses. What those studies found, why they cannot prove prevention, and what later research showed.
The four ED pills compared: sildenafil, tadalafil, vardenafil and avanafil
The four FDA-approved erectile dysfunction pills side by side from their labels: how fast they peak, how long they last, food, side effects and fakes.
ED supplements, ingredient by ingredient: what the evidence shows
An evidence table for common ED supplements: ginseng, yohimbe, horny goat weed, ashwagandha, tongkat ali, ginkgo, DHEA, maca, zinc, vitamin D and magnesium.
Gabapentin, pregabalin and ED: what the labels say
Can gabapentin (Neurontin) or pregabalin (Lyrica) cause erectile dysfunction? What the FDA labels list, what studies found, and what a prescriber can change.
Generic Cialis: what generic tadalafil is, and how it differs from compounded
Tadalafil is the generic name for Cialis. What an FDA-approved generic must prove, why the tablet can look different, and why compounded is not the same.
Is sildenafil the same as Viagra? What the brand name, the generic, and a compounded version actually are
Generic sildenafil is FDA-approved generic Viagra. Who makes it, what equivalence it must prove, why it looks different, and why compounded is not the same.
L-arginine and L-citrulline for ED: what the trials found
What the trials show about L-arginine and L-citrulline for erectile dysfunction, how they are meant to work, blood pressure cautions, and their FDA status.
Taking ED pills without ED: what the labels and studies say
Do ED pills do anything for men without ED? What placebo trials, user surveys and FDA labels say about recreational use, poppers, stimulants and anxiety.
Sildenafil interactions: which combinations actually matter, and why
Viagra (sildenafil) drug interactions from the FDA label: never with nitrates, poppers or riociguat; care with alpha blockers, ritonavir and BP drugs.
When sildenafil does not seem to work: what clinicians check next
Why sildenafil (Viagra) may seem not to work: how it was taken, food, stimulation, too few tries, hormones and fake pills, and what options come next.
Sildenafil side effects: what the trials counted, and why men stop
Sildenafil (Viagra) side effects from the FDA label: how often headache, flushing, indigestion and vision changes occur at each strength, and rare risks.
Vardenafil vs sildenafil: how the two short-acting ED pills really compare
Vardenafil (Levitra) vs sildenafil (Viagra) from the FDA labels: onset, half-life, food, side effects, the QT caution, and whether switching helps.
Tadalafil: what it is, what it is approved for and how it works
What tadalafil (Cialis) is, the three uses the FDA approved, how it works, its downsides and whether it expires, from the Cialis label and the FDA.
Vardenafil (Levitra, Staxyn): what it is, side effects and how it differs
Vardenafil (Levitra, Staxyn) from its FDA labels: how it works, the dissolving tablet, side effects, the QT warning, interactions and how it compares.
ADHD stimulants (Adderall) and ED: what the labels say
Can Adderall or other ADHD medicines cause erectile dysfunction? What the FDA labels list, how often it showed up in trials, and what to know about ED pills.
Anabolic steroids, testosterone misuse and ED
How misused anabolic steroids and high-dose testosterone can affect erections, what studies of men who stopped found, and what the FDA warns about.
Avanafil (Stendra): the fourth ED pill, and how it compares
Avanafil (Stendra) from its FDA label: how it works, the 15-minute trial, food, side effects, interactions, and how it compares with sildenafil and tadalafil.
Which blood pressure medicines are linked to ED? Lisinopril, amlodipine, losartan and others
What the FDA labels and trials say about lisinopril, amlodipine, losartan, beta-blockers and water pills and erections, and why not to stop one on your own.
Can ED be reversed? Causes that can improve when treated
Can erectile dysfunction be cured? What NIH, the AUA guideline and trials show about causes that can improve with treatment, lifestyle change and time.
Cannabis, CBD and ED: what the research shows
Does weed cause ED, and can CBD or hemp oil help? What the cannabis and ED studies found, why they disagree, and what the FDA says about CBD products.
Chewable, dissolving and liquid ED products: which are FDA-approved
Which non-pill ED medicines FDA has approved: dissolving vardenafil, a sildenafil film, a never-sold chewable tadalafil, and why troches and gummies are not.
High cholesterol, statins and ED: what the evidence shows
Is high cholesterol linked to ED, and do statins cause it or help? What the AUA, the NIH, the AHA, the statin labels and the trial reviews actually say.
Kidney disease, COPD, excess weight and ED: what the research shows, and what it does not
The NIH lists kidney disease, COPD and obesity among conditions that can lead to ED. What studies found, their limits, and what ED pill labels say.
Can you combine ED medicines? What the labels and the AUA say
Can sildenafil and tadalafil be taken together? What the FDA labels say about combining ED treatments, why combo tablets are not approved, and testosterone.
Counseling and sex therapy for ED: what the studies show
What sex therapy for erectile dysfunction involves, what CBT and couples trials found, how it pairs with ED medicine, and how to find a qualified therapist.
Cycling and ED: saddle pressure and what studies show
Can cycling affect erections? What saddle-pressure tests, rider surveys and a 2021 meta-analysis found, why they disagree, and which changes studies tested.
Daily vs on-demand tadalafil: which approach fits your life?
Daily vs on-demand tadalafil: two FDA-approved ways to take one drug. Spontaneity vs planning, the BPH approval, what daily use means, and the nitrate rule.
Diet and ED: the Mediterranean diet evidence, and the food myths
What the NIH and studies say about diet for erectile dysfunction: the Mediterranean diet trials, foods to limit, and whether beets, watermelon or coffee help.
Does insurance or Medicare cover ED treatment?
Why Medicare drug plans exclude ED pills by law, what Medicare does pay for, how tadalafil for BPH differs, how private plans and the VA handle ED medicines.
Does masturbation or frequent sex cause ED? What the evidence shows
Does masturbation cause erectile dysfunction, or can too much sex? What large studies found, how a recovery period differs from ED, and when to get checked.
ED after prostate surgery, radiation and other pelvic surgery: what the guideline and the NIH say
Prostate cancer surgery, radiation and hormone therapy, and other pelvic surgery, can all lead to ED. What the AUA and NIH say about recovery and options.
Depression, antidepressants and ED: the link in both directions
How depression and erectile dysfunction are linked both ways, what SSRI, SNRI and bupropion labels say about sexual side effects, and why not to stop alone.
Diabetes and ED: why they overlap and what managing diabetes changes
Why diabetes and erectile dysfunction overlap, how often in type 1 and type 2, what managing diabetes can change, and how ED medicines did in diabetes trials.
Heart disease and ED treatment: what the guideline and the labels actually say
A heart condition does not automatically rule out ED treatment. How the AUA guideline and Princeton III sort cardiac risk, and the one rule labels never bend.
High blood pressure and ED: the condition, the medicines and the overlap
Can high blood pressure cause ED? What the NIH, the AHA and drug labels say about the condition, its medicines, and taking ED pills alongside them.
ED in your 20s: common causes and when to get checked
Can a man in his 20s have ED? What studies of young men found, why anxiety and mood often matter, the physical causes to rule out, and when to get checked.
Erectile dysfunction in your 30s and 40s: the real causes and what to do
ED in younger men is common and often has a treatable cause: stress, early heart or metabolic risk, low T or lifestyle. What drives it and what to do.
ED in your 50s, 60s and beyond
ED is common after 50 but not a routine part of aging. What changes with age, why heart and diabetes checks matter, and how ED pills do in older men.
ED injections and urethral suppositories: alprostadil, Trimix and MUSE
How ED injections and the MUSE urethral suppository work, what the in-office test is, why Trimix is compounded and not FDA-approved, and the priapism risk.
ED Medication Side Effects: The Common, the Rare, and the Emergencies
Side effects of sildenafil, tadalafil, vardenafil and avanafil from their FDA labels: the common mild ones, rare emergencies, chest pain and the nitrate rule.
Sudden vision or hearing loss with ED pills: the label warnings
What the Viagra and Cialis labels say about sudden vision loss, NAION and sudden hearing loss, how a blue tint differs, and what to do if it happens.
Is it ED? The symptoms, and when a one-off is normal
The symptoms of erectile dysfunction, why one difficult night is not ED, how to tell ED from low desire, and the patterns that mean it is time to get checked.
ED treatment options beyond pills: devices, injections, implants and surgery
ED treatment options in the AUA guideline: pills, vacuum devices, urethral suppositories, injections, implants, vascular surgery and what is still experimental.
Is it ED or performance anxiety? How to tell what is really going on
Performance anxiety and physical ED can feel identical. How onset, situation and morning erections help tell them apart, and why a clinician should check.
Enlarged prostate (BPH) and ED, including tadalafil's BPH approval
How an enlarged prostate (BPH) and ED are linked, how BPH medicines can affect erections and ejaculation, and what tadalafil is approved for in BPH.
Erectile dysfunction: what it is, what causes it, and what helps
Erectile dysfunction explained plainly: what ED means, how common it is, its causes, how it is diagnosed, treatments, prevention and fertility.
Is there a test for ED? Questionnaires, blood tests, ultrasound and at-home kits explained
The tests used for erectile dysfunction: the IIEF-5 and SHIM questionnaires, morning testosterone and other blood tests, penile ultrasound, and at-home kits.
Exercise and ED: aerobic activity and pelvic floor training, what trials show
What randomized trials found on exercise for erectile dysfunction: aerobic activity, pelvic floor (Kegel) training, diet with exercise, and the limits.
Shockwave, PRP and stem cells for ED: what the guideline actually says
How the AUA guideline classes shockwave, PRP and stem cells for ED, what newer reviews and other guidelines found, and the newest options under study.
Hidden drugs in 'natural' ED pills: what the FDA warning list shows
What FDA lab tests found in rhino pills and other 'natural' male enhancement products, why hidden sildenafil is dangerous with nitrates, and how to report one.
Finasteride, dutasteride and ED: what the labels say
Can finasteride or dutasteride cause erectile dysfunction? The trial numbers on the FDA labels, the persistent-effects wording, and what to ask before stopping.
Ginseng for ED: what the evidence shows
Which ginseng the ED trials actually tested, what a Cochrane review found, side effects and drug interactions, and why ginseng is not an approved ED treatment.
GLP-1 medicines, weight loss and ED: what the labels and studies show
Does semaglutide cause erectile dysfunction? What the Wegovy, Ozempic, Zepbound and Mounjaro labels list, what studies found, and why they disagree.
Hormones and ED beyond testosterone: what thyroid problems and other hormone issues have to do with erections
The NIH names thyroid imbalance next to low testosterone as a hormone issue that can lead to ED. What studies found, which tests may be ordered, and the limits.
How is ED diagnosed? The history, exam, blood tests and specialist tests explained
How erectile dysfunction is diagnosed: the medical and sexual history, the physical exam, blood tests, and the ultrasound, nighttime and injection tests.
How ED medications actually work, and what they can and cannot do
How ED pills like sildenafil and tadalafil work: PDE5 inhibition, why arousal is still needed, how the four pills differ, food, alcohol and the nitrate danger.
How erections work: blood flow, nerves and nitric oxide, in plain language
How erections work, in plain language: the nerve signals, nitric oxide and cGMP, why blood vessels matter, how veins hold blood in, and what venous leak means.
How long does tadalafil last? Half-life and the label's timing window
How long tadalafil (Cialis) lasts: the label's 36-hour window, a 17.5-hour half-life, why it outlasts sildenafil, how long it stays in your system, and food.
How do you read ED evidence? Guideline grades, placebo and relative risk explained
What Grade A, B and C mean in the AUA's ED guideline, how to read a placebo column, and why a relative risk is not your own chance.
Can you buy Viagra over the counter? Prescription status explained
Viagra and generic sildenafil are prescription-only in the US. The UK pharmacy version, gas-station ED pill risks, and the OTC gel FDA classed as a device.
Recreational drugs, alcohol and other lifestyle factors in ED
What the NIH says about recreational drugs, alcohol, smoking and exercise in ED, what ED drug labels say about poppers, and what to tell a clinician.
Low libido in men: how it differs from ED, and common causes
Low libido is about wanting sex; ED is about erections. Common causes in men, how testosterone is checked, and why ED pills are not a fix for low desire.
Medicines that can affect erections, and why you should not stop them on your own
Antidepressants, blood pressure pills, hormone and cancer drugs, antihistamines and some painkillers are on the NIH list. What it means, and why to talk first.
Morning erections: what they can and cannot tell you
Why morning erections happen, what it means when they stop, whether they prove ED is psychological, how they change with age, and the nighttime erection test.
Natural remedies for ED vs medication: what actually works
Which lifestyle changes help ED, why L-arginine, ginseng and "T boosters" disappoint, why "herbal" ED pills can be dangerous, and where prescription pills fit.
Multiple sclerosis, spinal cord injury, diabetes and ED: how nerve conditions fit in
The NIH lists nerve damage or disorders, such as MS, spinal cord injury and pelvic surgery damage, among conditions linked to ED. What the research shows.
ED pills and nitrates: why the combination is dangerous
Why sildenafil, tadalafil, vardenafil and avanafil must never be combined with nitroglycerin, other nitrates or poppers, and what to do if chest pain starts.
What online ED treatment actually costs in 2026
What online ED treatment costs in 2026: what pharmacies pay for generic and brand ED pills, what a service adds, insurance, HSA and FSA, and safe savings.
Working through performance anxiety: what counseling and studies support
How to overcome sexual performance anxiety: what CBT, sex therapy and mindfulness involve, what trials found, where ED pills fit, and what propranolol is for.
Penile fracture: the emergency signs
What a penile fracture is, the signs urology guidelines list, why it needs emergency care, and what studies show about erections after repair.
Penile implants: types, how they work, and who considers them
What a penile implant is, the inflatable and malleable types, how each works, who considers one, and what satisfaction studies show, from the AUA guideline.
Penile implant cost and insurance coverage
What a penile implant costs, using Medicare's 2026 price data, what drives the bill, how Medicare, private plans and Medicaid cover it, and what to ask first.
Penile implant surgery and recovery: what to expect
How penile implant surgery is done, how painful recovery is reported to be, the infection and revision risks, and what men report about satisfaction.
Peyronie's disease: what the scar tissue is, what causes it, and how it connects to ED
Peyronie's disease is benign scar tissue in the penis that can cause a curve. Its causes, symptoms, how common it is, its link to ED, and the care options.
Peyronie's disease treatment: options with and without surgery
What guidelines say about Peyronie's disease treatment: waiting, injections, traction, surgery and implants, what is not recommended, and what each one can do.
Peyronie's disease vs normal curvature: how clinicians tell them apart
A curve you have always had is not the same as a new one. How urologists separate Peyronie's disease from congenital curvature, and the signs worth raising.
Can porn cause erectile dysfunction? What the research shows
Can porn cause erectile dysfunction? What the studies found, why the evidence is mixed, what else explains it, and when to get erection trouble checked.
Premature ejaculation: what it is, what causes it, and how it differs from ED
What premature ejaculation is, how guidelines define it, what is linked to it, and how it differs from erectile dysfunction and delayed ejaculation.
Premature ejaculation treatment: behavioral, topical and off-label options
Premature ejaculation treatments explained: behavioral methods, counseling, OTC numbing products, off-label SSRIs like paroxetine, and options with ED.
Priapism: when an erection lasting over 4 hours is an emergency
What priapism is, why the painful type is a medical emergency, which ED medicines list it as a risk on their FDA labels, and what to do if it happens.
PT-141 for men: what the evidence shows, and what it doesn't
PT-141 (bremelanotide) for men: how it differs from Viagra-style pills, its FDA status, what trials in men found, side effects, and compounded versions.
What is the safest ED medicine? What the labels say by health condition
No ED pill is safest for every man. What the sildenafil, tadalafil, vardenafil and avanafil labels say for heart, kidney and liver conditions and for older men.
Is sexual activity safe with heart disease? What cardiologists check
What the American Heart Association says about sexual activity after a heart attack, stent or bypass, with heart failure or AFib, and where ED pills fit.
Sildenafil and alcohol: what the label says
Can you drink with sildenafil (Viagra)? What the FDA label's alcohol study found, what it did not test, who needs more care, and how alcohol relates to ED.
Sildenafil and food: high-fat meals, grapefruit and what the label says
Can you take sildenafil (Viagra) with food? What the FDA label says about high-fat meals, why grapefruit comes up, and how tadalafil differs with food.
How long does sildenafil last, and when will it kick in?
How long sildenafil (generic Viagra) lasts: onset, a window of about 4 hours, how long it stays in your system, what food changes, and when to get help.
Sleep apnea, poor sleep and ED: what the studies show
Can sleep apnea cause erectile dysfunction? What the NIH and the research say about the link, how apnea might affect erections, and what CPAP trials found.
Smoking and ED: what the research shows about cigarettes, vaping and quitting
The NIH lists smoking cigarettes as a lifestyle behavior that may contribute to ED. What the studies found on smoking, vaping and quitting, and their limits.
Stress, PTSD and ED: what the research shows
How stress and PTSD are linked to erectile dysfunction, what veteran studies found, how PTSD medicines fit in, and which kinds of help the VA and NIH describe.
Sudden or temporary ED: common causes and how long it lasts
What can make erection trouble start suddenly, how long temporary ED tends to last, the role of stress, alcohol and new medicines, and when to get checked soon.
Tadalafil interactions: nitrates, blood pressure medicines, alcohol and grapefruit
Tadalafil (Cialis) interactions from the FDA label: why nitrates are off-limits, blood pressure medicines and alpha blockers, alcohol, grapefruit and ibuprofen.
Tadalafil side effects: what the label lists, including back pain
Tadalafil (Cialis) side effects from the FDA label: how often headache, indigestion and back pain occur, why the aches happen, and which signs need urgent care.
Tadalafil vs sildenafil: which ED medication fits your situation?
Tadalafil vs sildenafil side by side: onset, how long each lasts (up to 36 hours vs a few), daily use, food, side effects, the nitrate rule and cost.
How to bring up ED with a doctor: what to say, what to bring, what they may ask
How to talk to your doctor about erectile dysfunction: what to say, the medicine and supplement list to bring, questions to expect, and specialist referrals.
Talking with your partner about ED, and what partners ask
How to talk with a partner about erectile dysfunction, what partners often worry about, whether they can come to appointments, and how a partner can help.
Vacuum erection devices and constriction rings: how they work and what to look for
How a vacuum erection device works, the safety features FDA and the AUA point to, the side effects NIDDK lists, who should be careful, and how to choose one.
Vardenafil vs tadalafil: how the labels differ
Vardenafil (Levitra) vs tadalafil (Cialis) from the FDA labels: half-life, the 36-hour window, food, side effects, QT and nitrate warnings, and trial data.
Does a vasectomy cause ED?
Can a vasectomy cause ED? What large studies and medical sources found about erections after a vasectomy, why some men notice changes, and when to get checked.
Viral ED tricks fact-checked: salt, baking soda, Vicks, watermelon and more
Do ED home remedies like the salt trick, baking soda, Vicks or watermelon work? What the evidence shows for each, which ones can cause harm, and what helps.
What causes erectile dysfunction? Physical, medical and mental causes
The common causes of erectile dysfunction, from blood vessels, nerves and hormones to medicines, stress and habits, and why more than one is often involved.
Sildenafil: what it is, how it works and what the label says
What sildenafil is, what the FDA approved it for, how it works, the forms it comes in and the precautions, taken from the Viagra and Revatio labels.
When erectile dysfunction is a reason to see a doctor, and when it is an emergency
When to see a doctor about ED: the red flags that mean go soon, same-day emergencies like priapism, why not to self-source pills, and what a visit involves.
Which doctor treats ED? Primary care, urology, endocrinology and therapy
What doctor treats erectile dysfunction: when primary care is enough, when a urologist, endocrinologist or therapist helps, and where telehealth fits.