Erectile Dysfunction

AMS 700 CX / LGX / CXR Inflatable Penile Prosthesis with InhibiZone

The market-leading three-piece inflatable implant.

3-Piece Inflatable Penile ProsthesisFDA Approved (AMS 700 series; InhibiZone coating cleared 2001)

Stendra / Spedra (Avanafil)

The fastest-acting PDE5 inhibitor on the US market.

Oral PDE5 Inhibitor (fast-onset)FDA Approved (2012)

The device treatment ladder - least to most invasive

Start least invasive; the implant is the floor, not the goal.

Synthesis / Decision FrameworkReflects AUA/EAU/ISSM guideline treatment sequencing

Coloplast Titan Inflatable Penile Prosthesis (OTR / Touch)

The competing three-piece implant with a hydrophilic coating.

3-Piece Inflatable Penile ProsthesisFDA Approved (Coloplast Titan series)

Tadalafil 2.5-5 mg Once Daily for ED and BPH

The two-birds option for men with both ED and an enlarged prostate.

Once-Daily Oral PDE5 InhibitorFDA Approved (once-daily use, 2008-2011)

Diabetic Erectile Dysfunction

ED is often the first visible complication of diabetes.

Vasculogenic + Neurogenic EDUnderlying condition; ED treated per standard pathways

Diabetic Autonomic Neuropathy and Erectile Dysfunction

Diabetic ED is not just a plumbing problem, autonomic neuropathy guts the wiring that triggers the erection in the first place.

Mixed Neuropathic-Vasculogenic EDNot applicable (clinical condition)

Erectile dysfunction as an early warning of heart disease

The penis as an early-warning system for the heart.

Clinical ConceptN/A (clinical concept)

The complete history, science, and clinical taxonomy of erectile dysfunction

From the Ebers Papyrus to PDE5 inhibitors, the oldest documented men's health condition on earth.

Category AnchorN/A (overview entry; individual treatments vary)

The post-2017 price collapse and GoodRx cash-pricing of generic Viagra

How a $50 pill became a $0.30 commodity, and why some still pay $70.

Generic Drug EconomicsFDA Approved (generic sildenafil, Dec 2017)

International Index of Erectile Function

The research standard for measuring erectile function.

Validated InstrumentN/A (assessment instrument)

Caverject / Edex (alprostadil) & compounded Trimix / Bimix / Quadmix

The most reliable non-surgical option, delivered by needle.

Intracavernosal Vasoactive InjectionFDA Approved (alprostadil: Caverject, Edex); Trimix/Bimix compounded (off-label)

Coloplast Genesis, Boston Scientific Tactra & Spectra (semi-rigid rods)

The simpler implant: no pump, no reservoir, always semi-rigid.

Semi-Rigid / Malleable Penile ProsthesisFDA Approved (Tactra approved April 2019)

Stepwise Management of Neurogenic ED: PDE5 by Lesion Level, Injection, Vacuum, and Implants

PDE5 response tracks lesion level; injection rescues most failures; and in this population the penile implant is not a last resort so much as a definitive, high-satisfaction option.

Treatment AlgorithmComponent therapies FDA-approved (PDE5 inhibitors, alprostadil, vacuum devices, penile prostheses)

Erectile Dysfunction in Obesity and Metabolic Syndrome

One of the few causes of ED you can partly reverse.

Metabolic/Vasculogenic EDModifiable risk cluster; not a drug

Sildenafil, Tadalafil, Vardenafil, Avanafil

The first-line treatment for erectile dysfunction worldwide.

Oral PDE5 InhibitorFDA Approved (Sildenafil 1998)

Coloplast Titan & Boston Scientific AMS 700 inflatable prostheses

A two-company market with the highest satisfaction scores in ED care.

Inflatable Penile ProsthesisFDA Approved (inflatable penile prostheses)

Viagra vs Cialis, Consumer Head-to-Head

Same class, different clocks.

PDE5 Inhibitor ComparisonBoth FDA Approved (sildenafil 1998, tadalafil 2003)

Tobacco, Nicotine and Erectile Dysfunction

A direct, dose-dependent hit to penile blood flow.

Vasculogenic ED Risk FactorModifiable risk factor; not a drug

The fast-onset PDE5 inhibitor and Petros Pharmaceuticals' Rx-to-OTC push

The newest oral PDE5 inhibitor, betting its future on going over-the-counter.

Oral PDE5 Inhibitor (Avanafil)FDA Approved (avanafil/Stendra, 2012)

ED as a vascular warning sign, Princeton IV and what a good evaluation looks like

An erection is a vascular event, and often the first symptom of heart disease.

Cardiovascular Evaluation PathwayN/A (clinical evaluation/consensus topic)

Sildenafil, From Angina Failure to the Little Blue Pill (1989-1998)

The accidental side effect that became a billion-dollar medicine.

Drug Discovery / HistorySildenafil FDA Approved for ED (March 1998)

Small-Carrion Rod & the Scott Inflatable Prosthesis (1973)

1973: the year two rival teams gave erectile dysfunction a surgical cure.

Surgical History / DevicesPenile prostheses are FDA-regulated devices (modern descendants approved)

The major organic ED subtypes

Most ED is organic, arteries, nerves, and blood sugar.

Organic ED SubtypesN/A (disease classification)

Alcohol, Whiskey Dick and Erectile Dysfunction

Acute fizzle, chronic damage, two different problems.

Acute and Chronic ED FactorLifestyle factor; not a drug

Dry orgasm, neurogenic, post-RPLND, and diabetic causes

Orgasm with little or no semen, often a wiring problem, not a fading one.

Ejaculatory DysfunctionNo dedicated drug approval; sperm-retrieval and fertility tools exist

MPOA, PVN, and the dopaminergic pro-sexual vs serotonergic inhibitory balance

Before blood reaches the penis, the brain decides whether to begin.

Neuroanatomy of Male Sexual BehaviorNot applicable, a neuroscience framework, not a product

Orgasm-associated urine leakage (uroclimax)

Leaking urine at the moment of orgasm, common after prostatectomy, rarely discussed.

Orgasm-Associated IncontinenceNot applicable, a post-surgical symptom with several management options

PDE5 Inhibitor Plus Injection, VED, or MUSE

Stacking mechanisms when one isn't enough.

Second-Line / Combination ED TherapyComponent therapies approved; combinations often off-label

Priligy - the only purpose-built on-demand SSRI for PE (approved abroad, not in the US)

The one SSRI designed for sex on demand - that American men still cannot legally get.

Short-Acting On-Demand SSRIApproved in 60+ countries; FDA non-approvable letter 2005, never approved in the US

The bidirectional relationship between mood disorders and male sexual function

Mood disorders and sexual dysfunction feed each other in both directions.

Psychiatric-Sexual ComorbidityNot applicable, a comorbidity pattern, not a single product

Apomorphine, dopamine agonists, and Parkinson's-medication hypersexuality

The neurotransmitter of wanting, and the cautionary tale of trying to drug it.

Dopaminergic Pro-Sexual PharmacologySublingual apomorphine (Uprima/Ixense) approved in EU ~2001, never approved in US; withdrawn from EU market

Medications That Cause Erectile Dysfunction

Sometimes the cause of ED is in the medicine cabinet.

Iatrogenic / Pharmacologic CauseClass of adverse drug effects (varies by agent)

Approved vs Cleared vs Registered, the Sham-RCT Demand, a Red-Flag Checklist, and the Honest State of the Field

How to tell a regenerative sexual-health breakthrough from a sales pitch.

Evaluation FrameworkFramework entry; the therapies it evaluates are investigational or unapproved

The Lecture That Launched Injectable ED Therapy

A scientist proved his own discovery, on stage, in person.

Medical History / BiographyNot Applicable (historical demonstration)

A Skeptic's Field Guide to Spotting Regenerative-Medicine Hype and Clinic Fraud

If it's 'FDA-registered' (not approved), cash-only, and bundled, slow down.

Synthesis / Evidence-Literacy FrameworkN/A, framework entry

Mediterranean diet, exercise, weight loss, smoking cessation

The strongest, longest, and least commercial evidence in the entire category.

Lifestyle InterventionN/A (lifestyle)

Hypoactive Sexual Desire vs Erectile Dysfunction

Wanting sex and being able to perform are different systems.

Differential / Desire DisorderDiagnostic distinction; no single drug

The 1966 Founding of Laboratory Sexology

They put human sexual physiology under the microscope.

Medical History / BiographyNot Applicable (research milestone)

Beta-blockers, SSRIs, finasteride, antipsychotics, and more

When the prescription, not the patient, is the cause.

Iatrogenic Sexual DysfunctionClass-dependent; effects are labeled adverse events, not approvals

Nocturnal Penile Tumescence Physiology and What Their Loss Signals

Nocturnal erections are a built-in test of penile hardware.

Diagnostic Physiological SignPhysiological phenomenon, not a treatment

Sexual Dysfunction in Multiple Sclerosis

Highly prevalent, underdiscussed, and best understood through a three-tier primary/secondary/tertiary framework.

Demyelinating Neurogenic DysfunctionNot applicable (clinical condition)

Cavernous Nerve Preservation in Radical Prostatectomy

The Walsh technique that turned radical prostatectomy from a near-certain cause of impotence into a potency-sparing operation.

Surgical Technique / Iatrogenic EDSurgical technique (not an FDA-regulated product)

Neurogenic Erectile and Ejaculatory Dysfunction: Mechanisms and Lesion Patterns

Erection is a spinal reflex with two parallel wiring systems, lesion location, not just lesion presence, determines the pattern.

Neurologic Cause of EDNot applicable (clinical category, not a product)

Wet dreams, nocturnal emissions, and cultural anxiety

A normal reflex weighed down by centuries of unwarranted worry.

Normal Physiology / Cultural MythNot applicable, a normal physiological event, not a disease

NPTR, distinguishing organic from psychogenic ED

Healthy men erect 3-5 times a night, measure it and you learn the cause.

Diagnostic TestFDA Cleared (monitoring devices)

Paroxetine, Sertraline, Fluoxetine, Escitalopram, and Clomipramine

Antidepressants repurposed for the side effect they were notorious for.

Chronic Serotonergic Pharmacotherapy (off-label)All used off-label for PE; none FDA-approved for this indication

Color Duplex Doppler with Intracavernosal Vasoactive Injection

The gold-standard test for distinguishing arterial from venous causes of ED.

Vascular Diagnostic ImagingDiagnostic imaging procedure (device-based)

Intracavernosal alprostadil, Trimix, Bimix

Second-line therapy that works even when the pills fail.

Intracavernosal InjectionFDA Approved (alprostadil 1995); Trimix is compounded, not FDA-approved

Semi-rigid and inflatable penile implants

The most invasive ED treatment, and the one with the highest patient satisfaction.

Surgical ImplantFDA Approved (devices; first implants 1973)

Barlow's cognitive-interference model and fight-or-flight suppression of erection

Anxiety does not just distract from arousal, it actively diverts attention away from it.

Psychogenic ED / Cognitive-Affective ModelNot applicable, a psychological mechanism; treated with sex therapy/CBT, not a drug

Penile fibrous plaque and curvature

Fibrous plaque, curvature, and the only FDA-approved injectable for it.

Structural DisorderFDA Approved (collagenase, Xiaflex, 2013)

Lifelong vs Acquired PE, the IELT Definition, and the Serotonergic Basis

With ED, one of the two most common male sexual complaints - and the one America still has no approved pill for.

Male Ejaculatory DisorderNo oral PE drug FDA-approved in the US

Dapoxetine, Off-Label SSRIs, Topical Anesthetics

The most common male sexual complaint, and the one with no FDA-approved pill in America.

Ejaculatory Latency PharmacotherapyNo oral PE drug FDA-approved in US (dapoxetine declined 2005)

Prolonged pathological erection

An erection over 4 hours is an emergency, not a boast.

Urologic EmergencyN/A (clinical emergency)

Performance anxiety, sensate focus, and behavioral treatment

Masters and Johnson built the framework, sensate focus over performance pressure.

Psychological TherapyN/A (psychotherapeutic intervention)

Bladder-Neck Failure - Alpha-Blockers, Diabetes, and Post-Surgical Causes

Orgasm with little or no semen - because it went backward into the bladder.

Ejaculatory Direction DisorderNo dedicated drug approval; off-label sympathomimetics and sperm-retrieval used

Fertility in Spinal Cord Injury and Neurogenic Anejaculation: PVS, Electroejaculation and ART

Sperm production is usually intact, the obstacle is delivery, and modern retrieval plus assisted reproduction makes biological fatherhood realistic for most.

Neurogenic Fertility ManagementPVS devices and assisted reproduction are established; specific tools vary in regulatory status

Sexual and Ejaculatory Dysfunction After Spinal Cord Injury

Reflex erections survive, voluntary ejaculation usually does not, and one fertility procedure can trigger a hypertensive emergency.

Spinal Cord Injury Sexual DysfunctionNot applicable (clinical condition)

Mechanism of SSRI anorgasmia/low libido and the contested PSSD syndrome

The brain's brake on sex, and the drugs that press it, sometimes permanently.

Serotonergic Sexual Inhibition / Iatrogenic DysfunctionNot applicable, describes side effects of approved SSRIs; PSSD recognized by EMA (2019) as a possible persistent effect

Performance-Anxiety-Related Erectile Dysfunction

The most common cause of ED in younger men.

Psychogenic ED DriverNot a drug; behavioral/psychological condition

Masters & Johnson vs Basson vs the Bancroft-Janssen dual-control model

From a linear arousal staircase to a balance of excitation and inhibition.

Theoretical Models of Sexual ResponseNot applicable, competing scientific models, not a product

Pelvic/Spinal Surgery and Radiation-Induced Cavernous Nerve Injury

The most common cause of neurogenic ED in clinical practice is the operating room and the radiation suite, the cavernous nerves are fragile and run right through the surgical field.

Iatrogenic Neurogenic EDNot applicable (clinical condition)

Why T drives libido and nocturnal erections more than visually-stimulated rigidity

Testosterone fuels wanting and night-time erections more than it rescues a failing one.

Androgen Neurobiology of Sexual FunctionTestosterone approved for hypogonadism; not approved to treat ED in eugonadal men

Hims, Ro/Roman, BlueChew, Rugiet, direct-to-consumer ED prescribing

A multibillion-dollar industry built on $0.30 generic pills and slick branding.

Direct-to-Consumer TelehealthUnderlying drugs FDA-approved; compounded formulations are not

Lidocaine/Prilocaine Creams & Sprays - Promescent, EMLA, Fortacin/PSD502

Turn down penile sensation, turn up latency - but mind what rubs off on your partner.

Penile Topical Local AnestheticOTC lidocaine sprays (e.g., Promescent) marketed under monograph; Fortacin (PSD502) approved in EU, not FDA-approved

Timm Medical Osbon ErecAid, Pos-T-Vac, Augusta & generics

Decades-old, drug-free, and central to post-prostatectomy rehab.

Vacuum Erection Device (VED)FDA-cleared as Class II medical devices (Rx and OTC variants)

Osbon ErecAid, Encore, Pos-T-Vac, Timm Osbon (VED / vacuum pumps)

Draw blood in with a vacuum, trap it with a ring.

External Vacuum TherapyFDA cleared (device class; available OTC and by prescription)

Stop-Start (Semans), Squeeze (Masters & Johnson), and Pelvic-Floor Training

The drug-free techniques - modest as monotherapy, useful in combination.

Behavioral & Conservative TherapyBehavioral/physical therapy - no FDA drug status

Compounded chewable sildenafil/tadalafil/vardenafil subscriptions

The brand that turned a generic pill into a chewable subscription.

Compounded Chewable SubscriptionChewable formulation not FDA-approved; active ingredients are FDA-approved generics

Trimix/Quadmix injections, sublingual troches, and the compounding gray area

Effective, physician-prescribed, and outside the FDA-approval framework.

Compounded PharmaceuticalNot FDA-approved as compounded formulations (active ingredients may be approved separately)

Penile constriction rings incl. FirmTech Tech Ring / Performance Ring

Trap the blood you already have, safely.

Constriction / Tension DeviceFDA-registered device category (OTC); not an FDA-approved ED cure

Saddle-Related Pudendal/Perineal Compression and Erectile Function

When the bicycle saddle compresses the very nerves and arteries that power an erection.

Lifestyle / Mechanical Risk FactorLifestyle/mechanical factor (no FDA status)

Inhibited Ejaculation - SSRI-Induced, Neurologic, Age-Related, and Idiopathic

The hard-to-treat opposite of PE - and the one with the fewest options.

Ejaculatory Delay/Failure DisorderNo FDA-approved drug for delayed ejaculation

Inhibited Ejaculation and Orgasmic Dysfunction in Men

The under-discussed opposite of premature ejaculation, often drug-induced.

Ejaculatory/Orgasmic DisorderNo FDA-approved drug for delayed ejaculation

Disability, Sexuality, and Sexual Rehabilitation: The Neglected Dimension

The biology is increasingly treatable; the systemic neglect is the harder problem, sexual health is routinely omitted from disability care.

Psychosocial and SystemicNot applicable (care-delivery and psychosocial domain)

Rising prevalence, pornography, anxiety, and the case for vascular screening

Not just performance anxiety, sometimes the first sign of vascular disease.

Epidemiology / Clinical PatternN/A (clinical/epidemiologic topic)

Eroxon / MED3000 Topical Erectile Dysfunction Gel

The first OTC erectile-dysfunction gel, classed as a device, not a drug.

Topical On-Demand Device GelFDA De Novo authorization / OTC clearance (June 2023)

MED3000 Topical Evaporative ED Gel

The first FDA-cleared over-the-counter topical gel for erectile dysfunction.

OTC Topical ED Gel (de novo device)FDA cleared OTC via de novo (June 2023)

Blood in the Semen - Benign Reassurance vs the Red Flags

Alarming to see, usually benign - until age and persistence flip the calculus.

Ejaculate AbnormalityA symptom, not a drug indication - evaluated with established urologic workup

Blood in the semen, causes, workup, and red flags

Usually benign and self-limited, but age and persistence change the calculus.

Ejaculate AbnormalityNot applicable, a symptom evaluated with established urologic workup

MUSE - Medicated Urethral System for Erection (alprostadil suppository)

The needle-free alternative that couldn't match the injection.

Intraurethral Alprostadil SuppositoryFDA Approved (1996); discontinued in the US June 2024

Medicated Urethral System for Erection

Alprostadil without the needle, a urethral pellet.

Intraurethral PelletFDA Approved (1996)

Nitric Oxide Precursor Amino Acids for ED

The supplement-aisle attempt to feed the nitric oxide pathway PDE5 inhibitors exploit.

NO-Precursor Amino Acid SupplementNot FDA-approved for ED (dietary supplement)

Low-Intensity Extracorporeal Shockwave Therapy, Mechanism, Meta-Analyses, and the Protocol Problem

The one regenerative ED therapy with real RCTs, and a heterogeneity problem the marketing never mentions.

Energy-Based Regenerative ProcedureNot FDA-cleared for ED (investigational; AUA/EAU)

Li-ESWT / GAINSWave, The Neovascularization Claim, the Sham RCTs, and the Focused-vs-Radial Bait-and-Switch

The most-studied regenerative ED therapy, and the one whose marketing most abuses that fact.

Energy-Based Regenerative ProcedureNot FDA-approved for ED (investigational; AUA/EAU)

Li-ESWT (low-intensity extracorporeal shockwave therapy)

Promising mechanism, real RCTs, and marketing well ahead of the evidence.

Energy-Based TherapyNot FDA-cleared for ED specifically

HSDD in men, low desire as a diagnosis distinct from ED

Not an erection problem, a desire problem, and a real diagnosis.

Sexual Desire DisorderNo FDA-approved drug for male HSDD specifically

Bremelanotide (PT-141)

A brain-level arousal pathway, and a gray-market peptide for men.

Melanocortin Receptor AgonistApproved for premenopausal female HSDD (Vyleesi, 2019); not approved for male ED

PT-141 (Vyleesi), central arousal via MC4R, distinct from peripheral PDE5

A drug that acts on the brain's arousal circuitry rather than the penile blood vessels.

Melanocortin Receptor AgonistBremelanotide (Vyleesi) FDA-approved 2019 for premenopausal women with HSDD; NOT approved for male ED

Oral (Testosterone Undecanoate/Kyzatrex), Nasal (Natesto), SARMs as Therapeutics, and Tissue-Selective Androgens

New ways to deliver testosterone are real and approved; 'tissue-selective' SARMs as therapeutics remain unproven.

Androgen Delivery / SARMs (Mixed Status)Some oral/nasal forms FDA-approved; therapeutic SARMs investigational/none approved

Post-orgasm satiety and the prolactin model of the refractory period

Why orgasm is followed by satiety, drowsiness, and a refractory pause.

Post-Orgasm NeuroendocrinologyNot applicable, describes endogenous hormones, not an approved product

Dysorgasmia / odynorgasmia, pain during or after orgasm

Pain in the penis, perineum, or testes during or just after climax.

Ejaculatory Pain SyndromeNo dedicated FDA approval; treatment targets the underlying cause

Pelvic Floor Muscle Training and Manual Therapy

Training the muscles that clamp the veins to keep an erection rigid.

Conservative Rehabilitative TherapyTherapy/rehabilitation (no FDA drug status)

Erectile rehabilitation after radical prostatectomy

Keeping the tissue alive while the nerves recover.

Rehabilitation ProtocolN/A (protocol using approved agents/devices off-label)

Post-prostatectomy recovery: PDE5 + VED + injection timing and AUA guidance

The protocol everyone uses and no trial has definitively validated.

Post-Prostatectomy RehabilitationNo FDA-approved 'rehabilitation' protocol; uses approved drugs/devices off a defined regimen

Bremelanotide (Vyleesi), Melanocortin Agonist for Sexual Desire

A brain-acting desire peptide approved for women and used off-label in men.

Melanocortin Receptor Agonist (Peptide)FDA Approved 2019 (Vyleesi, for premenopausal women with HSDD only)

PDE5 Inhibitor Use in Men Without ED

Using an erection drug you don't medically need.

Off-Label / Recreational UseDrug approved for ED; recreational use is off-label

Aversion to sexual contact and male genito-pelvic pain syndromes

When the body, not just the mind, recoils from sex.

Aversion / Pelvic Pain DisorderNo single approved treatment; care is multidisciplinary

Post-Stroke and Parkinson's Disease Sexual Dysfunction (Including Dopaminergic Hypersexuality)

Two central nervous system diseases that usually suppress sexual function, but Parkinson's dopaminergic drugs can swing it the other way into compulsive hypersexuality.

Central Neurogenic Sexual DysfunctionNot applicable (clinical condition)

How testosterone relates to, and is conflated with, erectile dysfunction

Related but not equivalent, and the marketplace deliberately blurs the line.

Hormonal FactorTestosterone approved for hypogonadism, not for ED

Novelty-renewed sexual response, strong in animals, weaker and contested in humans

A new partner renews sexual interest, robustly in rodents, more arguably in humans.

Behavioral Neuroscience of NoveltyNot applicable, a behavioral phenomenon, not a product

Beyond Bremelanotide, MC4R Agonists, Setmelanotide, and the Brain-First Approach to ED

PDE5 inhibitors fix plumbing; melanocortins target desire in the brain, a different, harder problem.

Central Nervous System PharmacologyBremelanotide approved (women's HSDD); broader melanocortin ED pipeline investigational

How Hims, Ro, and Others Sell Delay Wipes, Sprays, and Compounded Products

A treatment gap turned into a subscription business.

Direct-to-Consumer PE CommerceMix of OTC monograph products and compounded/off-label items; no FDA-approved oral PE drug underlies the category

Post-ejaculatory physiology, prolactin, the science, and the myths

Why round two has to wait, and why the textbook answer may be wrong.

Normal Post-Ejaculatory PhysiologyNot applicable, a normal physiological state, not a disorder

Low-intensity shockwave for ED, FDA-clearance reality, clinic franchises, paid influencers

Marketed as a cure, classified by the AUA as investigational.

Low-Intensity Shockwave (Investigational)No device is FDA-approved/cleared for ED; AUA calls Li-ESWT investigational

VED / penis pump

Negative pressure in, constriction ring on, a non-drug, non-surgical option.

Mechanical DeviceFDA Cleared (device)

Inability to Reach Orgasm - SSRI-Induced and Persistent Post-SSRI Forms

When orgasm won't come - and sometimes won't return after the pill stops.

Male Orgasmic DisorderNo FDA-approved treatment; EMA acknowledged persistent post-SSRI dysfunction (2019)

Pleasure-dissociative orgasmic disorder, orgasm without pleasure

The body climaxes, but the pleasure never arrives.

Orgasmic Pleasure DisorderNo FDA-approved treatment; management targets reversible causes

The Elator / ErektorFlex and similar external support sleeves

Rigidity from the outside, no erection required.

External Penile Support DeviceMade with FDA-approved materials; not an FDA-approved ED treatment

hMaxi-K Ion-Channel Gene Transfer (Melman/Christ), Why It Stalled and the Long Horizon

The one genuinely novel molecular approach to ED, and it stalled after phase I two decades ago.

Gene-Transfer Therapy (investigational)Investigational; phase-I completed, program did not advance

Ion-Channel Gene Transfer (hMaxi-K / Ion Channel Innovations) and Why the Field Stalled

The first human ED gene-therapy trial proved feasibility two decades ago, then the field went quiet.

Gene Transfer (Investigational, Stalled)Investigational; Phase I completed ~2006, no approved product

Persistent Semi-Rigid Flaccid State with Pelvic Pain

An internet-named syndrome of a semi-firm flaccid penis, pelvic pain, and anxiety.

Pelvic/Neuromuscular Syndrome (poorly defined)Not a formally codified diagnosis; no approved therapy

Epimedium / icariin

Traditional Chinese herb with a real but weak PDE5-inhibiting molecule.

Herbal PDE5 InhibitorN/A (supplement)

Kisspeptin, Neurokinin-B Modulators, and Targeting the Top of the Reproductive Axis

A brain peptide that sits above testosterone itself, and seems to boost both desire and arousal in trials.

Neuroendocrine (HPG-Axis) PharmacologyInvestigational; no approved kisspeptin product for sexual function

The Tanning Peptides, Erection and Libido as Side Effects

Bremelanotide's reckless ancestors, bought online to tan, with a sexual side effect.

Melanocortin Agonists (Tanning Peptides, Unapproved)Not FDA-approved; warned against by regulators (FDA, TGA, others)

The Claims vs the Evidence

The 'love hormone' marketed for libido, where the trials mostly tie placebo.

Neuropeptide Hormone (Off-label / Compounded)FDA-approved only for labor/lactation (Pitocin); sexual use is off-label/compounded

Regenerative Urology, Atala's Lab-Grown Corpora (PNAS), Decellularized Scaffolds, and the Decades-Off Reality

Real, serious science, and realistically decades from a clinic.

Tissue Engineering / Regenerative Urology (preclinical)Preclinical / early investigational; no human erectile-tissue product

Lab-Grown Erectile Tissue, Bioengineered Corpora, and Decellularized Scaffolds

Lab-grown erectile tissue works in rabbits, humans are a long way off.

Bioengineering Research (Preclinical)Preclinical/early research; no approved bioengineered erectile tissue

PGAD / restless genital syndrome (genito-pelvic dysesthesia)

Arousal that arrives uninvited, persists, and orgasm won't switch off.

Unwanted Arousal DisorderNo FDA-approved treatment; management targets contributing causes

PRP Intracavernosal Injection & the Trademarked Priapus Shot, One Small RCT, Orthopedic Kits, and 'Bigger' Marketing

One 60-man trial props up a nationwide trademarked injection business.

Autologous Blood-Product InjectionPRP kits cleared for orthopedic use only; no FDA approval for ED

Post-Orgasmic Illness Syndrome and Dysorgasmia - the Rare, Poorly-Understood Disorders

Two ways orgasm can hurt - one treatable, one barely understood.

Post-Orgasmic / Ejaculatory Pain SyndromesNo FDA-approved treatment; POIS not in standard diagnostic manuals

Pornography-Induced Erectile Dysfunction

A widely discussed but scientifically contested entity.

Proposed Behavioral/Psychogenic EDNot an FDA-recognized diagnosis

Porn-induced ED, the honest state of weak causal evidence, not NoFap mythology

A plausible hypothesis with weak causal data, and a lot of internet pseudoscience around it.

Contested Behavioral HypothesisNot applicable, a contested hypothesis, not a recognized diagnosis

POIS, flu-like illness triggered by ejaculation

A rare, debilitating flu-like reaction within minutes to hours of orgasm.

Post-Ejaculatory Systemic SyndromeNo FDA-approved treatment; condition not formally classified

Persistent Sexual Dysfunction After Stopping Antidepressants

Sexual side effects that persist long after the antidepressant is stopped.

Persistent Iatrogenic Sexual DysfunctionEMA acknowledged label warning (2019); no approved treatment

Platelet-Rich Plasma for ED, the Poulios RCT, the Priapus Trademark, and the Marketing Apparatus

One small positive RCT, a registered trademark, and a marketing machine that vastly outruns both.

Autologous Injectable (Regenerative Claim)Not FDA-approved for ED; PRP kits cleared only for bone-graft/orthopedic prep

Platelet-rich plasma penile injection

A trademarked brand procedure marketed far beyond its evidence.

Regenerative InjectionNo FDA clearance for ED

The Cash-Pay Clinic Landscape: Shockwave, PRP, Stem Cells, Exosomes & the Evidence-vs-Hype Gap

A field where the marketing runs years ahead of the randomized trials.

Regenerative-Medicine LandscapeNo regenerative therapy is FDA-approved for ED; most are investigational or unapproved

Adipose- vs Bone-Marrow-Derived Cells, the Haahr Pilots, FDA Warning Letters, and Stem-Cell Tourism

Legitimate early research shadowed by a predatory, sometimes unlawful clinic industry.

Cell-Based Regenerative TherapyNo approved stem-cell product for ED; FDA warning letters and a permanent injunction against a major clinic

Preclinical Promise vs Unregulated Stem-Cell Clinics, FDA Warning Letters, and 'Stem-Cell Tourism'

Real preclinical science, a tiny pilot RCT, and a predatory cash-pay clinic industry the FDA has repeatedly sanctioned.

Cell-Based Regenerative (Mostly Unproven/Predatory)No FDA-approved stem-cell product for ED; many clinics are subject of FDA warnings

FirmTech Tech Ring and the quantified-erection market

The wearable that turns erections into data.

Wearable Sexual-Health SensorFDA-registered wearable device; not an FDA-approved diagnostic or ED treatment

Amniotic Fluid, Membrane, and 'Placental' Injections Marketed for Sexual Health, Unproven and Often Noncompliant

'Birth-tissue' regenerative claims with no sexual-health evidence and a shaky regulatory footing.

Birth-Tissue Product (unapproved for ED)Regulated as HCT/Ps or drugs; many marketed products are noncompliant; none approved for ED

Acellular Birth-Tissue and Exosome Vials Marketed for Sexual Health, Unapproved and Often Illegally Promoted

There are zero FDA-approved exosome products for any disease, yet they're sold for sexual health.

Unapproved Biologic (Fraud-Adjacent)No FDA-approved exosome/amniotic product for ED; FDA has issued public safety warnings

Extracellular-Vesicle Infusions, The FDA 2019/2020 Safety Alert, Zero Approved Products, and the 'Next Big Thing' Pitch

Marketed as the successor to stem cells, with zero approved products and an FDA safety alert attached.

Extracellular-Vesicle Biologic (unapproved)No FDA-approved exosome product; subject of FDA public safety alerts

BPC-157 / TB-500 Injected Locally for 'Penile Regeneration', No Evidence, Real Harm

Recovery-peptide hype ported onto the penis with zero supporting data.

Unapproved 'Regenerative' Peptide InjectionUnapproved drugs; not approved for any use; FDA compounding restrictions

'Shockwave/PRP/Stem Cells Make You Bigger', The Total Absence of Evidence and the Implausible Mechanism

The claim with the widest gap between marketing and evidence: zero.

Enlargement Marketing Claim (unsupported)No regenerative therapy is approved or evidenced for penile enlargement

Optimization-Clinic Bundling of Shockwave, PRP & Peptides with TRT, Selling 'Peak Performance' Ahead of Evidence

Where unproven regenerative procedures get packaged with TRT and peptides as a 'peak male' subscription.

Optimization / Biohacking Bundle (unproven)No regenerative therapy is approved for sexual 'performance enhancement'

'Male enhancement' products, Rhino pills, and FDA tainted-product warnings

Gas-station pills with hidden prescription drugs the FDA keeps recalling.

OTC 'Male Enhancement' SupplementsNot FDA-approved; many products subject to FDA tainted-product warnings/recalls