44 source-based articles maintained by the HealthRX.com Editorial Team.
Showing 44 of 44 clinical reviews.
A guide to alprostadil for erectile dysfunction, covering MUSE urethral suppositories, Caverject and Edex injections, real trial data, dosing protocols, and head-to-head comparison with sildenafil, tadalafil, vardenafil, and avanafil.
A guide to male anorgasmia covering delayed ejaculation, neurological causes, hormonal contributors, medication effects, and evidence-based treatment options, with an evidence-boundary map and a decision framework for narrowing the cause.
A guide to apomorphine for ED, including mechanism of action, dosing, side effects, and head-to-head comparisons with sildenafil, tadalafil, vardenafil, and avanafil.
A guide to avanafil (Stendra): onset time, dosing, side effects, and how it stacks up against sildenafil, tadalafil, vardenafil, and alprostadil for erectile dysfunction.
A guide to bremelanotide (PT-141) covering its melanocortin mechanism, FDA-approved dosing, side effects, and a head-to-head comparison with PDE5 inhibitors sildenafil, tadalafil, vardenafil, and avanafil for erectile dysfunction.
Grapefruit and grapefruit juice block the enzyme that clears sildenafil, tadalafil, and other ED medications from your body, raising plasma levels and side-effect risk. Learn which drugs are affected, by how much, and what to do instead.
Learn which antibiotics interact with Cialis (tadalafil), how to adjust your dose, how long Cialis lasts versus Viagra, and when daily tadalafil makes more sense than on-demand dosing.
Find out whether daily Viagra is safe, how sildenafil and tadalafil compare for everyday use, what affects how long each drug lasts, and why alcohol can undercut your results.
Young men can take Cialis (tadalafil) for erectile dysfunction or performance anxiety-related ED. Learn the doses, how long it lasts vs. Viagra, daily vs. on-demand options, and when to see a doctor.
Real 2026 pricing data for sildenafil and tadalafil, including generic pharmacy costs, compounded ED medication pricing, telehealth rates, and how insurance and discount cards affect your out-of-pocket spend.
Learn how alcohol interacts with sildenafil (Viagra), what happens to blood pressure and side effects, how long Viagra lasts, and when to call your doctor. Evidence-based guidance from the HealthRX.com medical team.
Erectile dysfunction after prostatectomy affects up to 85% of men. Learn why it happens, how long recovery takes, and which treatments, from PDE5 inhibitors to penile rehabilitation, have the strongest evidence.
A guide to erectile dysfunction covering causes, risk factors, oral medications, injection therapy, hormonal workup, and when to seek care. Includes coverage of premature ejaculation, delayed ejaculation, low libido, and Peyronie's disease.
Cialis (tadalafil) lasts up to 36 hours per dose. Learn exactly how long each dose works, how it compares to Viagra, what affects duration, and when to call your doctor.
Viagra (sildenafil) typically lasts 4 to 6 hours, but dose, food, age, and other drugs all shift that window. Learn the full pharmacokinetics, how it compares to Cialis, and when to call your doctor.
PT-141 (bremelanotide) typically works within 45 minutes to 2 hours after injection. This guide covers onset times, duration, dosing, how it compares to PDE5 inhibitors like sildenafil and tadalafil, and what to do when standard ED medications stop working.
Generic sildenafil contains the same active ingredient, dose, and FDA bioequivalence standard as brand-name Viagra. Learn how both drugs work, how long they last, how they compare to Cialis, and what to do if sildenafil stops working.
L-citrulline raises nitric oxide levels and may improve mild ED, but head-to-head data show sildenafil (Viagra) outperforms it on every measured endpoint. Learn the doses, timelines, and when each option makes sense.
Evidence-based guide to low sexual desire in men, including testosterone testing, prolactin, depression, medication effects, fertility, erectile dysfunction, and cause-specific treatment.
A guide to TRT for men, covering benefits, side effects, cardiovascular safety, diabetes, BPH, prostate surgery, and how to get started safely.
A comprehensive clinical guide for men with BPH covering erectile dysfunction, TRT safety, cardiovascular risk, diabetes overlap, and sexual recovery after prostate surgery. prepared by the HealthRX.com Editorial Team.
What sildenafil and tadalafil labels say about sudden vision loss, what observational studies can and cannot prove about NAION, and when to seek urgent eye care.
How fast do PDE5 inhibitors work? Compare onset times, peak effect windows, and duration for sildenafil, tadalafil, vardenafil, and avanafil. Includes daily vs. on-demand tadalafil dosing, Trimix injection protocols, and PT-141 dosing for ED.
A guide to every common and serious side effect of PDE5 inhibitors (sildenafil, tadalafil, vardenafil, avanafil), including NAION, priapism, and Trimix injection complications, with dosing thresholds and emergency management steps.
A guide to penile implants covering inflatable and malleable devices, surgical outcomes, satisfaction rates, and how implants compare to sildenafil, tadalafil, vardenafil, and avanafil.
A guide to pentoxifylline for Peyronie's disease covering mechanism, dosing, the strength of clinical evidence, combination therapy with PDE5 inhibitors, and when to consider escalation to injection or surgery.
A guide to Peyronie's disease covering penile curvature causes, scar tissue formation, diagnosis criteria, collagenase injections, surgery, and how the condition intersects with erectile dysfunction and low libido.
Post-SSRI sexual dysfunction (PSSD) can persist for months or years after stopping antidepressants. Learn what causes it, how to recognize it, and the evidence-based treatments available in 2025.
A guide to premature ejaculation covering DSM-5 criteria, IELT thresholds, dapoxetine, SSRIs, topical agents, behavioral techniques, and when PE overlaps with ED, low libido, or Peyronie's disease.
A guide to priapism emergency management covering time-to-treatment windows, aspiration and phenylephrine protocols, PDE5 inhibitor side effects, Trimix injection complications, and NAION risk.
A complete clinical guide to priapism covering ischemic vs. nonischemic types, emergency aspiration, intracavernosal phenylephrine, surgical shunting, and how priapism relates to erectile dysfunction, testosterone, and GLP-1 medications.
Evidence-based PT-141 dosing protocols for erectile dysfunction, with direct comparisons to tadalafil daily vs on-demand, Trimix injection protocols, and PDE5 inhibitor onset times.
A detailed clinical comparison of PT-141 (bremelanotide) vs PDE5 inhibitors (sildenafil, tadalafil, vardenafil, avanafil) covering mechanism, dosing, efficacy data, side effects, and how to choose.
A guide covering erectile dysfunction, testosterone therapy, and sexual function in men with heart disease, diabetes, BPH, TRT use, and after prostatectomy. Includes dosing, trial data, and safety guidance.
A comparison of sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra/Staxyn), avanafil (Stendra), and alprostadil (MUSE/Caverject) covering doses, onset, side effects, and which drug fits your situation.
A detailed clinical comparison of sildenafil (Viagra) and vardenafil (Levitra) covering onset, duration, dosing, side effects, drug interactions, and how each stacks up against tadalafil, avanafil, PT-141, and Trimix.
A guide to tadalafil (Cialis) covering dosing, mechanism, head-to-head comparisons with sildenafil, vardenafil, avanafil, and alprostadil, plus side effects and who qualifies.
A comparison of tadalafil 2.5 to 5 mg daily dosing versus 10 to 20 mg on-demand dosing for erectile dysfunction, including onset times, PDE5 inhibitor comparisons, Trimix protocols, and PT-141 dosing guidance.
A guide to topical lidocaine for premature ejaculation, covering evidence from randomized trials, correct application technique, dosing, side effects, and how it compares with PDE5 inhibitors like sildenafil, tadalafil, vardenafil, and avanafil.
A guide to trimix injection site complications, including priapism, fibrosis, hematoma, and infection, with specific prevention protocols and emergency steps.
Complete clinical guide to vardenafil (Levitra, Staxyn) covering dosing, onset, side effects, drug interactions, and head-to-head comparisons with sildenafil, tadalafil, avanafil, and alprostadil.
Cialis (tadalafil) causes back pain in roughly 5-6% of users due to PDE11A inhibition in spinal and muscle tissue. Learn why it happens, how long it lasts, and what to do about it.
Viagra not working? Learn the 10 most common reasons sildenafil fails, what the clinical evidence says, when to switch to tadalafil or other PDE5 inhibitors, and how to talk to your doctor about next steps.
A guide to yohimbine for ED, including how it compares to sildenafil, tadalafil, vardenafil, and avanafil, with dosing, side effects, and evidence from named trials.